Remove wrs-guest-scale SDK Module

With the StarlingX move to supporting pure upstream OpenStack, the
majority of the SDK Modules are related to functionality no longer
supported. The remaining SDK Modules will be moved to StarlingX
documentation.

Story: 2005275
Task: 30170

Change-Id: I319937c933a493f2a5ba13523dbfee945540be1c
Signed-off-by: Kristine Bujold <kristine.bujold@windriver.com>
This commit is contained in:
Kristine Bujold 2019-03-25 13:44:57 -04:00
parent cb1af1cd4b
commit e8baa6dfec
25 changed files with 0 additions and 2442 deletions

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@ -9,8 +9,5 @@
# guest-client # guest-client
guest-client guest-client
# guest-scale-agent
guest-scale-agent
# host-guest-comm # host-guest-comm
guest-host-comm guest-host-comm

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@ -9,8 +9,5 @@
# guest-client # guest-client
guest-client guest-client
# guest-scale-agent
guest-scale-agent
# host-guest-comm # host-guest-comm
guest-host-comm guest-host-comm

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@ -5,9 +5,6 @@
# nova-api-proxy # nova-api-proxy
nova-api-proxy nova-api-proxy
# guest-scale-agent
guest-scale-helper
# host-guest-comm # host-guest-comm
host-guest-comm host-guest-comm

View File

@ -35,11 +35,6 @@ MTCE_GUEST_DIR=$STXNFV_DIR/mtce-guest
MTCE_GUEST_CONF=$STXNFV_SYSCONFDIR/mtc MTCE_GUEST_CONF=$STXNFV_SYSCONFDIR/mtc
MTCE_GUEST_OCF_DIR=$STXNFV_OCF_ROOT/resource.d/platform MTCE_GUEST_OCF_DIR=$STXNFV_OCF_ROOT/resource.d/platform
# guest-agent
GUEST_AGENT_DIR=$STXNFV_DIR/guest-agent
GUEST_SCALE_AGENT_VER="2.0"
GUEST_SCALE_AGENT_DIR=$GUEST_AGENT_DIR/guest-scale-agent-$GUEST_SCALE_AGENT_VER
# guest-comm # guest-comm
GUEST_COMM_DIR=$STXNFV_DIR/guest-comm GUEST_COMM_DIR=$STXNFV_DIR/guest-comm
HOST_AGENT_COMM_VER="2.0" HOST_AGENT_COMM_VER="2.0"
@ -89,10 +84,6 @@ function cleanup_guest_server {
sudo rm -rf $STXNFV_SYSCONFDIR/logrotate.d/guestServer.logrotate sudo rm -rf $STXNFV_SYSCONFDIR/logrotate.d/guestServer.logrotate
} }
function cleanup_guest_scale_helper {
$STX_SUDO rm -rf $STX_INST_DIR/sbin/guest_scale_helper
}
function cleanup_host_agent { function cleanup_host_agent {
sudo rm -rf $STXNFV_SYSCONFDIR/init.d/host_agent sudo rm -rf $STXNFV_SYSCONFDIR/init.d/host_agent
sudo rm -rf $STXNFV_SYSCONFDIR/pmon.d/host_agent.conf sudo rm -rf $STXNFV_SYSCONFDIR/pmon.d/host_agent.conf
@ -150,10 +141,6 @@ function cleanup_nfv {
if is_service_enabled host-agent; then if is_service_enabled host-agent; then
cleanup_host_agent cleanup_host_agent
fi fi
if is_service_enabled guest-scale-helper; then
cleanup_guest_scale_helper
fi
} }
function cleanup_nfv_client { function cleanup_nfv_client {
@ -391,15 +378,6 @@ function install_guest_server {
popd popd
} }
function install_guest_scale_helper {
pushd $GUEST_SCALE_AGENT_DIR
make EXTRALDFLAGS="-L$STX_INST_DIR"/lib64 all
$STX_SUDO install -m 750 bin/guest_scale_helper $STX_INST_DIR/sbin/guest_scale_helper
popd
}
function install_mtce_guest_common { function install_mtce_guest_common {
pushd $MTCE_GUEST_DIR/src pushd $MTCE_GUEST_DIR/src
make EXTRALDFLAGS="-L$STX_INST_DIR"/lib64 build make EXTRALDFLAGS="-L$STX_INST_DIR"/lib64 build
@ -436,10 +414,6 @@ function install_nfv {
if is_service_enabled host-agent; then if is_service_enabled host-agent; then
install_host_agent install_host_agent
fi fi
if is_service_enabled guest-scale-helper; then
install_guest_scale_helper
fi
} }
function install_nfv_client { function install_nfv_client {

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@ -1,12 +0,0 @@
Metadata-Version: 1.1
Name: guest-scale-agent
Version: 2.0
Summary: Titanium Cloud agent and helper app to scale VMs up/down
Home-page:
Author: Windriver
Author-email: info@windriver.com
License: Apache-2.0
Description: Titanium Cloud agent and helper app to scale VMs up/down
Platform: UNKNOWN

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@ -1,2 +0,0 @@
SRC_DIR="guest-scale-agent-2.0"
TIS_PATCH_VER=6

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@ -1,117 +0,0 @@
Summary: Titanium Cloud agent and helper app to scale VMs up/down
Name: guest-scale-agent
Version: 2.0
%define patchlevel %{tis_patch_ver}
Release: %{tis_patch_ver}%{?_tis_dist}
License: Apache-2.0
Group: base
Packager: Wind River <info@windriver.com>
URL: unknown
%define cgcs_sdk_deploy_dir /opt/deploy/cgcs_sdk
Source0: %{name}-%{version}.tar.gz
BuildRequires: json-c-devel
BuildRequires: host-guest-comm-dev
BuildRequires: guest-host-comm-dev
BuildRequires: systemd-devel
Requires: bash
%description
Titanium Cloud agent and helper app to scale VMs up/down
%package -n guest-scale-agent-dbg
Summary: Titanium Cloud agent and helper app to scale VMs up/down - Debugging files
Group: devel
%description -n guest-scale-agent-dbg
Titanium Cloud agent and helper app to scale VMs up/down This package contains ELF
symbols and related sources for debugging purposes.
%package -n guest-scale-agent-dev
Summary: Titanium Cloud agent and helper app to scale VMs up/down - Development files
Group: devel
Requires: guest-scale-agent = %{version}-%{release}
%description -n guest-scale-agent-dev
Titanium Cloud agent and helper app to scale VMs up/down This package contains
symbolic links, header files, and related items necessary for software
development.
%package -n guest-scale-helper
Summary: Titanium Cloud agent and helper app to scale VMs up/down
Group: base
Requires: rtld(GNU_HASH)
%description -n guest-scale-helper
Titanium Cloud agent and helper app to scale VMs up/down
%package -n %{name}-cgts-sdk
Summary: SDK files for Titanium Cloud agent and helper app to scale VMs up/down
Group: devel
%description -n %{name}-cgts-sdk
SDK files for Titanium Cloud agent and helper app to scale VMs up/down
%prep
%setup
%build
VER=%{version}
MAJOR=`echo $VER | awk -F . '{print $1}'`
MINOR=`echo $VER | awk -F . '{print $2}'`
PATCH=%{patchlevel}
make all VER=${VER} MAJOR=${MAJOR} MINOR=${MINOR} PATCH=${PATCH}
%install
make install \
DESTDIR=%{buildroot} \
SYSCONFDIR=%{buildroot}%{_sysconfdir} \
VERSION=%{version} PATCH=%{tis_patch_ver}\
UNITDIR=%{buildroot}%{_unitdir} \
SDK_DEPLOY_DIR=%{buildroot}%{cgcs_sdk_deploy_dir}
%post
%systemd_post offline-cpus.service
%systemd_post guest-scale-agent.service
/usr/bin/systemctl enable offline-cpus.service >/dev/null 2>&1
/usr/bin/systemctl enable guest-scale-agent.service >/dev/null 2>&1
%preun
%systemd_preun offline-cpus.service
%systemd_preun guest-scale-agent.service
%postun
%systemd_postun guest-scale-agent.service
%systemd_postun offline-cpus.service
%files
%defattr(-,root,root,-)
/usr/sbin/guest_scale_agent
/usr/sbin/offline_cpus
/usr/sbin/app_scale_helper
/etc/init.d/offline_cpus
%{_unitdir}/offline-cpus.service
%{_unitdir}/guest-scale-agent.service
%files -n guest-scale-agent-dbg
%defattr(-,root,root,-)
/usr/src/debug/*
/usr/sbin/.debug/guest_scale_agent
%files -n guest-scale-agent-dev
%defattr(-,root,root,-)
/usr/sbin/.debug/guest_scale_agent
%files -n guest-scale-helper
%defattr(-,root,root,-)
/usr/sbin/guest_scale_helper
%files -n %{name}-cgts-sdk
%{cgcs_sdk_deploy_dir}/wrs-guest-scale-%{version}.%{patchlevel}.tgz

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@ -1,202 +0,0 @@
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@ -1,142 +0,0 @@
#
# BSD LICENSE
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Note: if you change either Makefile or Makefile.sdk you need to manually
# do a "make clean" and then "make".
EXECS = guest_scale_helper guest_scale_agent
DESTDIR ?= /
SYSCONFDIR ?= $(DESTDIR)/etc
UNITDIR ?= $(DESTDIR)/usr/lib/systemd/system
SDK_DEPLOY_DIR ?= /opt/deploy/cgcs_sdk
VERSION ?= 2.0
PATCH ?= 0
CFLAGS= -g -Wall -Wformat -Wformat-security
ODIR=obj
BINDIR=bin
BINEXECS=$(addprefix $(BINDIR)/, $(EXECS))
GUEST_SCALE_HELPER_SRCS = guest_scale_helper.c parser.c
GUEST_SCALE_HELPER_OBJ := $(patsubst %,$(ODIR)/%,$(GUEST_SCALE_HELPER_SRCS:.c=.o))
GUEST_SCALE_AGENT_SRCS= guest_scale_agent.c parser.c
GUEST_SCALE_AGENT_OBJ := $(patsubst %,$(ODIR)/%,$(GUEST_SCALE_AGENT_SRCS:.c=.o))
OBJS = $(GUEST_SCALE_OBJ) $(GUEST_SCALE_AGENT_OBJ)
DEPS = $(OBJS:.o=.d) sdk/sdk.d
-include $(DEPS)
EXPORT_SDK := wrs-guest-scale-$(MAJOR).$(MINOR).$(PATCH)
# SYSROOT = $(shell for i in $(LD) ; do echo $$i; done | grep sysroot= | awk -F = '{ print $$2 }'`)
SYSROOT = $(shell echo "$(LD)" | sed -n -e 's/^.*sysroot=//p' | awk '{ print $$1 }')
LIBSERVERGROUP_VER = $(shell find $(SYSROOT) | grep libservergroup.so. | sed -n -e 's/^.*libservergroup\.so\.//p')
print-%:
@echo $* = $($*)
printvars:
@$(foreach V,$(sort $(.VARIABLES)), $(if $(filter-out environment% default automatic, $(origin $V)),$(warning $V=$($V) ($(value $V)))))
.PHONY: printvars
all: host_all
host_all: $(BINEXECS) sdk/$(EXPORT_SDK).tgz
# The dependency tracking for the SDK tarball is rather crude. If any
# file changes they're all copied over again. This is quick, so it's
# not worth getting fancy.
sdk/$(EXPORT_SDK).tgz: printvars
@echo "Making SDK"
@mkdir -p sdk/$(EXPORT_SDK)
@mkdir -p sdk/$(EXPORT_SDK)/bin
@mkdir -p sdk/$(EXPORT_SDK)/obj
@mkdir -p sdk/$(EXPORT_SDK)/scripts
@cp scripts/* sdk/$(EXPORT_SDK)/scripts
@echo "MAJOR=$(MAJOR)" > sdk/$(EXPORT_SDK)/Makefile
@echo "MINOR=$(MINOR)" >> sdk/$(EXPORT_SDK)/Makefile
@echo "PATCH=$(PATCH)" >> sdk/$(EXPORT_SDK)/Makefile
@cat Makefile.sdk >> sdk/$(EXPORT_SDK)/Makefile
@cat docs/README.txt | sed 's/1\.0\.0/$(MAJOR).$(MINOR).$(PATCH)/' | sed 's/9.9.9/${LIBSERVERGROUP_VER}/' > sdk/$(EXPORT_SDK)/README.txt
@cp docs/TiS-Guest-Resource-Scaling.pdf sdk/$(EXPORT_SDK)/TiS-Guest-Resource-Scaling.pdf
@cp LICENSE sdk/$(EXPORT_SDK)/LICENSE
@cp $(GUEST_SCALE_AGENT_SRCS) sdk/$(EXPORT_SDK)
@cp misc.h sdk/$(EXPORT_SDK)
@cd sdk && tar czf $(EXPORT_SDK).tgz $(EXPORT_SDK)
@echo -n "sdk/$(EXPORT_SDK).tgz: Makefile.sdk docs/README.txt docs/TiS-Guest-Resource-Scaling.pdf " > sdk/sdk.d
@echo -n "scripts/init_offline_cpus scripts/offline_cpus scripts/offline-cpus.service " >> sdk/sdk.d
@echo -n "scripts/app_scale_helper " >> sdk/sdk.d
@echo -n "$(GUEST_SCALE_AGENT_SRCS) " >> sdk/sdk.d
@echo "misc.h " >> sdk/sdk.d
@echo '*' > sdk/.gitignore
$(ODIR)/%.o: %.c
$(CC) -c $(CFLAGS) $(CFLAGS2) -MMD -o $@ $<
$(BINDIR)/guest_scale_agent: $(GUEST_SCALE_AGENT_OBJ)
$(CC) -o $@ $^ $(LDFLAGS) $(EXTRALDFLAGS) -lguesthostmsg -ljson-c
$(BINDIR)/guest_scale_helper: $(GUEST_SCALE_HELPER_OBJ)
$(CC) -o $@ $^ $(LDFLAGS) $(EXTRALDFLAGS) -lhostguestmsg -ljson-c
install:
install -d 750 -d $(DESTDIR)/usr/sbin
install -d 750 -d $(SYSCONFDIR)/init.d
install -m 750 -d $(DESTDIR)/usr
install -m 750 -d $(DESTDIR)/usr/src
install -m 750 -d $(DESTDIR)/usr/src/debug
install -m 750 -d $(DESTDIR)/usr/src/debug/guest-scale-agent-$(VERSION)
install -d 750 -d $(DESTDIR)/usr/sbin/.debug
install -m 750 scripts/app_scale_helper $(DESTDIR)/usr/sbin/app_scale_helper
install -m 750 scripts/offline_cpus $(DESTDIR)/usr/sbin/offline_cpus
install -m 750 bin/guest_scale_helper $(DESTDIR)/usr/sbin/guest_scale_helper
install -m 750 bin/guest_scale_agent $(DESTDIR)/usr/sbin/guest_scale_agent
install -m 750 scripts/init_offline_cpus $(SYSCONFDIR)/init.d/offline_cpus
install -m 750 bin/guest_scale_agent $(DESTDIR)/usr/sbin/.debug/guest_scale_agent
install -d $(UNITDIR)
install -m 750 scripts/offline-cpus.service $(UNITDIR)/offline-cpus.service
install -m 750 scripts/guest-scale-agent.service $(UNITDIR)/guest-scale-agent.service
install -d $(SDK_DEPLOY_DIR)
install -m 644 sdk/wrs-guest-scale-$(VERSION).$(PATCH).tgz $(SDK_DEPLOY_DIR)/wrs-guest-scale-$(VERSION).$(PATCH).tgz
# Add the host clean as a dependency to the SDK stuff
clean: host_clean
host_clean:
rm -rf sdk

View File

@ -1,74 +0,0 @@
#
# BSD LICENSE
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
.PHONY: all clean
EXECS= guest_scale_agent
CFLAGS= -g -Wall
ODIR=obj
BINDIR=bin
GUEST_SCALE_AGENT_SRCS= guest_scale_agent.c parser.c
GUEST_SCALE_AGENT_OBJ := $(patsubst %,$(ODIR)/%,$(GUEST_SCALE_AGENT_SRCS:.c=.o))
BINEXECS=$(addprefix $(BINDIR)/, $(EXECS))
OBJS = $(GUEST_SCALE_AGENT_OBJ)
_DEPS = *.h
DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
DEPS = $(OBJS:.o=.d)
-include $(DEPS)
WRS_SERVER_GROUP_DIR ?= $(shell find ../wrs-server-group*[0-9] -maxdepth 0 -type d | sort | tail -n 1)
WRS_SERVER_GROUP_INC2 = $(WRS_SERVER_GROUP_DIR)/include
WRS_SERVER_GROUP_INC ?= $(shell if [ -d $(WRS_SERVER_GROUP_INC2) ]; then echo "$(WRS_SERVER_GROUP_INC2)"; else echo "/usr/include"; fi)
WRS_SERVER_GROUP_LIB2 = $(WRS_SERVER_GROUP_DIR)/lib
WRS_SERVER_GROUP_LIB3 = $(shell if [ -d /usr/lib64 ]; then echo "/usr/lib64"; else echo "/usr/lib"; fi)
WRS_SERVER_GROUP_LIB ?= $(shell if [ -d $(WRS_SERVER_GROUP_LIB2) ]; then echo "$(WRS_SERVER_GROUP_LIB2)"; else echo "$(WRS_SERVER_GROUP_LIB3)"; fi)
CFLAGS += -I$(WRS_SERVER_GROUP_INC)
LDFLAGS += -L$(WRS_SERVER_GROUP_LIB)
$(ODIR)/%.o: %.c
$(CC) -c $(CFLAGS) $(CFLAGS2) -MMD -o $@ $<
all: $(BINEXECS)
$(BINDIR)/guest_scale_agent: $(GUEST_SCALE_AGENT_OBJ)
$(CC) -o $@ $^ $(LDFLAGS) -lguesthostmsg -ljson-c
clean:
rm -rf $(ODIR)/* *~ core $(BINDIR)/*

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@ -1,4 +0,0 @@
# Ignore everything in this directory
*
# Except this file
!.gitignore

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@ -1,243 +0,0 @@
BSD LICENSE
Copyright(c) 2013-2016, Wind River Systems, Inc.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Wind River Systems nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------
DESCRIPTION
===========
Guest Server Scaling is a service to allow a guest to scale the capacity of a
single guest server up and down on demand.
Current supported scaling operation is CPU scaling.
The resources can be scaled up/down from the nova CLI or GUI. Scaling can also
be set up via heat to be automatically triggered based on Ceilometer statistics.
(This will not be covered in this document, see the full documentation and the
heat SDK for how to configure heat templates for scaling a single guest server.)
This package contains an agent and a number of scripts to be included in the
guest image. These will handle the guest side of the coordinated efforts
involved in scaling up/down guest resources.
DEPENDENCIES
============
NOTE that this wrs-guest-scale SDK module has both a compile-time and run-time
dependency on the wrs-server-group SDK module.
This wrs-guest-scale SDK module requires that the wrs-server-group SDK tarball
has been previously extracted and built, and that the resulting libraries
and headers have been placed in a location that can be found by the normal build
tools, or the WRS_SERVER_GROUP_DIR environment variable has been set.
The output of BOTH the wrs-guest-scale SDK module and the wrs-server-group SDK
module are required to be installed in a guest image for guest resource scaling.
REQUIREMENTS
============
Compilation:
Linux OS, x86_64 architecture
gcc compiler
development libraries and headers for glibc
development libraries and headers for libguesthostmsg
(built by the wrs-server-group SDK package)
development libraries and headers for json-c
VM Runtime:
Linux OS, x86_64 architecture; CONFIG_HOTPLUG_CPU=y|m
runtime libraries for glibc
runtime libraries for libguesthostmsg
"guest_agent" binary daemon
(provided by the wrs-server-group SDK package)
runtime libraries for json-c
The code has been tested with glibc 2.15, gcc 4.6 and json-c 0.12.99 but it
should run on other versions without difficulty.
DELIVERABLE
===========
The Guest Server Scaling service is delivered as source with the required
Makefiles in a compressed tarball called "wrs-guest-scale-#.#.#.tgz", such that
it can be compiled for the applicable guest linux distribution.
COMPILE
=======
Pre-requisite:
Ensure that the wrs-server-group SDK tarball has been previously extracted and
built, and that the resulting libraries and headers have been placed in a
location that can be found by the normal build tools, or the WRS_SERVER_GROUP_DIR
environment variable has been set.
Extract the tarball contents:
tar xvf wrs-guest-scale-#.#.#.tgz
To compile:
# Note: assumes wrs-server-group-#.#.#.tgz has already been extracted and compiled.
cd wrs-guest-scale-#.#.#
# If wrs-guest-scale-#.#.#.tgz and wrs-server-group-#.#.#.tgz where extracted in a common directory
make
# Otherwise supply the path to where wrs-server-group can be found. e.g.
make WRS_SERVER_GROUP_DIR=/usr/src/wrs-server-group-#.#.#
This will produce:
1) An executable "bin/guest_scale_agent". This handles the basic vCPU scaling
in the guest, and calls out to a helper script if present to support
application-specific customization. It should be configured to respawn
(via /etc/inittab or some other process monitor) if it dies for any reason.
This executable must be installed into the guest (e.g. in "/usr/sbin") and configured
to run at startup as early as possible.
NOTE
The "guest_agent" executable from the wrs-server-group SDK package MUST ALSO
be installed into the guest (e.g. in "/usr/bin"), configured to run at startup
as early as possible and configured to respawn via /etc/inittab or some other
process monitor (in case it dies for any reason).
2) A script "script/app_scale_helper". This is an optional script that is
intended to allow for app-specific customization. If present, it must be
installed in "/usr/sbin". If present, it will be called by "guest_scale_agent"
when scaling in either direction.
3) A script "script/offline_cpus". This must be run later in the init sequence,
after guest_scale_agent has started up but before the application has started
any CPU-affined applications. A helper script "script/init_offline_cpus" has
been provided, and should be installed to "/etc/init.d/offline_cpus. The
"offline_cpus" script will offline vCPUs in the guest to match the status on
the hypervisor. This covers the case where we are booting up with some CPUs
offlined by the hypervisor.
4) For systemd users, the files "scripts/guest-scale-agent.service" and
"scripts/offline-cpus.service" should be copied to /lib/systemd/system/.
Note:
The inclusion of the files into the build system and the guest image and the
configuration of the guest startup scripts is left up to the user to allow for
different build systems and init subsystems in the guest.
INSTALL
=======
Installing in a running VM:
As the root user
1) Copy "bin/guest_scale_agent" to /usr/sbin in the VM.
2) Copy "scripts/app_scale_helper" and "scripts/offline_cpus" to /usr/sbin in the VM.
3) Copy "scripts/init_offline_cpus" to "/etc/init.d/offline_cpus". (Note the name change.)
4) Copy "scripts/guest-scale-agent.service" and "scripts/offline-cpus.service" to
/lib/systemd/system/.
5) Run "systemctl enable guest-scale-agent.service", "systemctl enable offline-cpus.service",
"systemctl start guest-scale-agent.service", "systemctl start offline-cpus.service"
The VM should now be ready to scale up and down.
USAGE
=====
The service is designed to be simple to use. A basic description is given
below, but more details are provided in the source and scripts.
1) Create a new flavor (or edit an existing flavor) such that the number of
vCPUs in the flavor matches the desired maximum number of vCPUs. To specify the
minimum number of vCPUs, create an "extra spec" metadata entry for the flavor
with a key of "wrs:min_vcpus" and a value that is an integer number between one
and the max number of vCPUs. This can be done from the CLI or the GUI. (In the
GUI select the "Admin" tab, go to the "Flavor" navigation link, click on a
flavor name, select the "Extra Specs" tab, click on "Create", select
"Minimum Number of CPUs" from the pulldown, and enter the desired value.)
2) Build BOTH the wrs-server-group SDK package and this wrs-guest-scale package,
and install the output of BOTH packages in an image. Lastly, ensure that the
CONFIG_HOTPLUG_CPU kernel config option is set in the image kernel.
3) Boot the image. It will come up with the full set of vCPUs.
4) To reduce the number of online vCPUs in the guest server, run
"nova scale <server> cpu down" from the controller (or anywhere else you can run
nova commands). This will pass a message up into the guest, where it will be
handled by "guest_scale_agent". That in turn will call out to
"/usr/sbin/app_scale_helper" (if it exists) which is expected to pick a vCPU to
offline. This script can be modified/replaced as needed for application-
specific purposes. By default, it will select the highest-numbered online vCPU.
If the script isn't present or errors out, then "guest_scale_agent" will itself
select the highest-numbered online vCPU as the one to be offlined. It will then
tell the guest kernel to offline the selected vCPU, and will pass the selected
vCPU back down to the hypervisor, which will adjust vCPU affinity so that the
underlying physical CPU can be freed up for use by other VMs. At this point
displaying the information for the guest server will show it using less than the
maximum number of cpus.
5) To increase the number of online vCPUs, run "nova scale <server> cpu up".
Assuming the resources are available the hypervisor will allocate a physical CPU
and will associate it with the guest server. "guest_scale_agent" will set the
lowest-numbered offline vCPU to "online", and will pass the vCPU number to
"/usr/sbin/app_scale_helper" (if it exists) for the application to do any
special handling that may be required.
The behaviour of a scaled-down server during various nova operations is as
follows:
live migration: server remains scaled-down
pause/unpause: server remains scaled-down
stop/start: server remains scaled-down
evacuation: server remains scaled-down
rebuild: server remains scaled-down
automatic restart on crash: server remains scaled-down
cold migration: server reverts to max vcpus
resize: server reverts to max vcpus for the new flavor
If a snapshot is taken of a scaled-down server, a new server booting the
snapshot will start with the number of vCPUs specified by the flavor.
CAVEATS
=======
It is possible for the scale-up operation to fail if the worker node has
already allocated all of its resources to other guests. If this happens,
the system will not do any automatic migration to try to free up resources.
Manual action will be required to free up resources.
Any CPUs that are handling userspace DPDK/AVP packet processing should not be
offlined. It may appear to work, but may lead to packet loss. This can be
enforced by setting the wrs:min_vcpus value appropriately high.
If hyperthreading is used, the flavor must set hw:cpu_thread_policy to
isolate and set cpu_policy to dedicated.

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@ -1,523 +0,0 @@
/**
* Copyright (c) <2013-2016>, Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <poll.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <cgcs/guest_host_msg.h>
#include <json-c/json.h>
#include "misc.h"
gh_info_t *info;
/* Scaling Request/Response message is encoded in JSON format.
The message sent out to UNIX socket is a null-terminated JSON format string
without embedded newlines.
Format:
{key:value,key:value,..., key:value}
Key/value pairs for Scaling Request:
"version": <integer> - version of the interface
"timeout_ms": <integer> - timeout for app_scale_helper scripts
"resource": cpu - indicate the resource to scale.
Only cpu is currently supported.
"direction“: "up or down
"online_cpu": <integer> - vcpu number to online when scale up
"online_cpus": <array of integers> - array of current online cpus
when request was sent.
example: [0,1,2,3,4,5]
Key/value pairs for Scaling Response:
"version": <integer>
"resource": cpu
"direction“: "up or down
"online_cpu": <integer> - vcpu number to online when scale up
"offline_cpu": <integer> - actual offlined vcpu number
"online_cpus": <array of integers> - array of current online cpus
when response was sent.
"result": "success" or "fail"
"err_msg": <string> - error message if result is fail
*/
#define CPU_SCRIPT "/usr/sbin/app_scale_helper"
// generic function to call out to helper script
// need to add support for timeout in here in case script hangs
int call_helper_script(char *cmd, int timeout_ms)
{
FILE *fp;
int rc;
fp = popen(cmd, "w");
if (fp) {
rc = pclose(fp);
if (rc == -1) {
ERR_LOG("pclose failed: %m");
return -1;
} else {
if (WIFEXITED(rc)) {
rc = WEXITSTATUS(rc);
if (rc == 127) {
ERR_LOG("problem with shell or helper script, possibly script missing");
return -1;
} else
return rc;
} else {
return -1;
}
}
} else {
ERR_LOG("popen failed due to fork/pipe/memory");
return -1;
}
}
int online_cpu(unsigned cpu)
{
int fd;
int rc;
char buf[100];
char val;
snprintf(buf, sizeof(buf), "/sys/devices/system/cpu/cpu%u/online", cpu);
fd = open(buf, O_RDWR);
if (fd < 0) {
ERR_LOG("can't open cpu online path: %m");
return -1;
}
rc = read(fd, &val, 1);
if (rc != 1){
ERR_LOG("can't read cpu online value: %m");
close(fd);
return -1;
}
if (val == '1') {
ERR_LOG("cpu %d is already online", cpu);
close(fd);
return 0;
}
val = '1';
rc = write(fd, &val, 1);
close(fd);
if (rc != 1){
ERR_LOG("can't set cpu %d online", cpu);
return -1;
}
return 0;
}
int offline_cpu(unsigned cpu)
{
int fd;
int rc;
char buf[100];
char val;
snprintf(buf, sizeof(buf), "/sys/devices/system/cpu/cpu%u/online", cpu);
fd = open(buf, O_RDWR);
if (fd < 0) {
ERR_LOG("can't open cpu online path: %m");
return -1;
}
rc = read(fd, &val, 1);
if (rc != 1){
ERR_LOG("can't read cpu online value: %m");
close(fd);
return -1;
}
if (val == '0') {
ERR_LOG("cpu %d is already offline\n", cpu);
close(fd);
return 0;
}
val = '0';
rc = write(fd, &val, 1);
close(fd);
if (rc != 1){
ERR_LOG("can't set cpu %d offline", cpu);
return -1;
}
return 0;
}
// read /sys/devices/system/cpu/online and get the last cpu listed
int get_highest_online_cpu(void)
{
int fd, rc;
char buf[256];
char *start;
unsigned int cpu;
fd = open("/sys/devices/system/cpu/online", O_RDONLY);
if (fd < 0) {
ERR_LOG("can't fopen /sys/devices/system/cpu/online: %m");
return -1;
}
rc = read(fd, buf, sizeof(buf));
close(fd);
if (rc < 2) {
ERR_LOG("error parsing /sys/devices/system/cpu/online, too few chars");
return -1;
}
// go to the end of the string
start = buf+rc-1;
if(*start != '\n') {
ERR_LOG("error parsing /sys/devices/system/cpu/online, not null-terminated");
return -1;
}
// now go backwards until we get to a separator or the beginning of the string
while ((*start != ',') && (*start != '-') && (start != buf))
start--;
start++;
rc = sscanf(start, "%u", &cpu);
if (rc != 1) {
ERR_LOG("error parsing /sys/devices/system/cpu/online, bad number");
return -1;
}
return cpu;
}
char *get_online_cpu_range(void)
{
FILE *file;
int rc;
char *str = NULL;
file = fopen("/sys/devices/system/cpu/online", "r");
if (!file) {
ERR_LOG("can't fopen /sys/devices/system/cpu/online: %m");
return 0;
}
rc = fscanf(file, "%ms", &str);
if (rc != 1)
ERR_LOG("can't read /sys/devices/system/cpu/online: %m");
fclose(file);
return str;
}
void cpu_scale_down(json_object *jobj_request,
json_object *jobj_response)
{
char cmd[1000];
int cpu=-1;
int rc;
//build our command to send to the helper script
rc = snprintf(cmd, sizeof(cmd), "%s --cpu_del\n", CPU_SCRIPT);
if ((rc > sizeof(cmd)) || rc < 0) {
ERR_LOG("error generating command: %m");
goto pick_cpu;
}
struct json_object *jobj_timeout_ms;
int timeout_ms;
if (!json_object_object_get_ex(jobj_request, TIMEOUT_MS, &jobj_timeout_ms))
{
ERR_LOG("failed to parse timeout_ms");
goto failed;
}
errno = 0;
timeout_ms = json_object_get_int(jobj_timeout_ms);
if(errno){
ERR_LOG("Error converting timeout_ms: %s", strerror(errno));
goto failed;
}
// call app helper script to select cpu to offline
rc = call_helper_script(cmd, timeout_ms);
if (rc < 0) {
ERR_LOG("call to app helper script failed\n");
goto pick_cpu;
} else if (rc == 0) {
ERR_LOG("call to app helper script return invalid cpu number 0\n");
goto pick_cpu;
} else {
INFO_LOG("app helper script chose cpu %d to offline\n", rc);
cpu = rc;
}
pick_cpu:
// if the app helper script doesn't exist or didn't return
// a cpu to offline, pick one ourselves
if (cpu == -1) {
cpu = get_highest_online_cpu();
if (cpu <= 0) {
ERR_LOG("unable to find cpu to offline\n");
goto failed;
}
}
// try to offline selected cpu
rc = offline_cpu(cpu);
if (rc < 0) {
ERR_LOG("failed to set cpu %d offline\n", cpu);
goto failed;
}
INFO_LOG("set cpu %d offline", cpu);
// we have successfully offlined the cpu
json_object_object_add(jobj_response, RESULT, json_object_new_string("success"));
json_object_object_add(jobj_response, OFFLINE_CPU, json_object_new_int(cpu));
struct online_cpus *current_online_cpus = range_to_array(get_online_cpu_range());
// no need to release jobj_array as its ownership is transferred to jobj_response
struct json_object *jobj_array = new_json_obj_from_array(current_online_cpus);
json_object_object_add(jobj_response, ONLINE_CPUS, jobj_array);
free(current_online_cpus);
return;
failed:
json_object_object_add(jobj_response, RESULT, json_object_new_string("fail"));
json_object_object_add(jobj_response, ERR_MSG, json_object_new_string(errorbuf));
return;
}
void cpu_scale_up(json_object *jobj_request,
json_object *jobj_response)
{
char cmd[1000];
struct json_object *jobj_timeout_ms;
if (!json_object_object_get_ex(jobj_request, TIMEOUT_MS, &jobj_timeout_ms)) {
ERR_LOG("failed to parse timeout_ms");
goto failed;
}
int timeout_ms = json_object_get_int(jobj_timeout_ms);
struct json_object *jobj_cpu;
if (!json_object_object_get_ex(jobj_request, ONLINE_CPU, &jobj_cpu)) {
ERR_LOG("failed to parse online_cpu");
goto failed;
}
int cpu = json_object_get_int(jobj_cpu);
//online_cpus is optional
struct json_object *jobj_online_cpus;
const char *online_cpus;
if (!json_object_object_get_ex(jobj_request, ONLINE_CPUS, &jobj_online_cpus)) {
ERR_LOG("failed to parse online_cpus");
goto failed;
}
json_object_object_get_ex(jobj_request, ONLINE_CPUS, &jobj_online_cpus);
if (!json_object_is_type(jobj_online_cpus, json_type_array)) {
ERR_LOG("failed to parse online_cpus");
goto failed;
}
online_cpus = json_object_to_json_string_ext(jobj_online_cpus, JSON_C_TO_STRING_PLAIN);
int rc = online_cpu(cpu);
if (rc < 0) {
printf("failed to set cpu %d online\n", cpu);
goto failed;
}
INFO_LOG("set cpu %d online", cpu);
// Now try to call out to the helper script
// If it fails, not the end of the world.
rc = snprintf(cmd, sizeof(cmd), "%s --cpu_add %d %s\n",
CPU_SCRIPT, cpu, online_cpus);
if ((rc > 0) && (rc < sizeof(cmd))) {
rc = call_helper_script(cmd, timeout_ms);
if (rc != 0)
ERR_LOG("call to app helper script failed, return code: %d\n", rc);
} else
ERR_LOG("error generating command: %m");
json_object_object_add(jobj_response, RESULT, json_object_new_string("success"));
json_object_object_add(jobj_response, ONLINE_CPU, json_object_new_int(cpu));
struct online_cpus *current_online_cpus = range_to_array(get_online_cpu_range());
// no need to release jobj_array as its ownership is transferred to jobj_response
struct json_object *jobj_array = new_json_obj_from_array(current_online_cpus);
json_object_object_add(jobj_response, ONLINE_CPUS, jobj_array);
free(current_online_cpus);
return;
failed:
json_object_object_add(jobj_response, RESULT, json_object_new_string("fail"));
json_object_object_add(jobj_response, ERR_MSG, json_object_new_string(errorbuf));
return;
}
/* Callback message handler. This will be called by the generic guest/host
* messaging library when a valid message arrives from the host.
*/
void msg_handler(const char *source_addr, json_object *jobj_request)
{
int rc;
// parse version
struct json_object *jobj_version;
if (!json_object_object_get_ex(jobj_request, VERSION, &jobj_version)) {
ERR_LOG("failed to parse version");
return;
}
int version = json_object_get_int(jobj_version);
if (version != CUR_VERSION) {
ERR_LOG("invalid version %d, expecting %d", version, CUR_VERSION);
return;
}
// parse msg_type
struct json_object *jobj_msg_type;
if (!json_object_object_get_ex(jobj_request, MSG_TYPE, &jobj_msg_type)) {
ERR_LOG("failed to parse msg_type");
return;
}
const char *msg_type = json_object_get_string(jobj_msg_type);
if (!strcmp(msg_type, MSG_TYPE_NACK)) {
struct json_object *jobj_log_msg;
if (!json_object_object_get_ex(jobj_request, LOG_MSG, &jobj_log_msg)) {
ERR_LOG("Nack: failed to parse log_msg");
}
const char *log_msg = json_object_get_string(jobj_log_msg);
ERR_LOG("Nack received, error message from host: %s", log_msg);
return;
} else if (!strcmp(msg_type, MSG_TYPE_SCALE_REQUEST)) {
;
} else {
ERR_LOG("unknown message type: %s", msg_type);
return;
}
struct json_object *jobj_response = json_object_new_object();
if (jobj_response == NULL) {
ERR_LOG("failed to allocate json object for response");
return;
}
struct json_object *jobj_resource;
if (!json_object_object_get_ex(jobj_request, RESOURCE, &jobj_resource)) {
ERR_LOG("failed to parse resource");
goto done;
}
const char *resource = json_object_get_string(jobj_resource);
struct json_object *jobj_direction;
if (!json_object_object_get_ex(jobj_request, DIRECTION, &jobj_direction)) {
ERR_LOG("failed to parse direction'");
goto done;
}
const char *direction = json_object_get_string(jobj_direction);
rc = -1;
if (!strcmp(resource,"cpu")) {
if (!strcmp(direction,"up")) {
cpu_scale_up(jobj_request, jobj_response);
} else if (!strcmp(direction,"down")) {
cpu_scale_down(jobj_request, jobj_response);
}
}
json_object_object_add(jobj_response, VERSION, json_object_new_int(CUR_VERSION));
json_object_object_add(jobj_response, RESOURCE, jobj_resource);
json_object_object_add(jobj_response, DIRECTION, jobj_direction);
const char *response = json_object_to_json_string_ext(jobj_response, JSON_C_TO_STRING_PLAIN);
// Send response back to the sender.
rc = gh_send_msg(info, source_addr, response);
if (rc < 0) {
ERR_LOG("gh_send_msg failed: %s\n", gh_get_error(info));
return;
}
done:
json_object_put(jobj_response);
}
void wait_for_messages(int fd)
{
int rc;
fd_set rfds, rfds_tmp;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
while(1) {
rfds_tmp = rfds;
rc = select(fd+1, &rfds_tmp, NULL, NULL, NULL);
if (rc > 0) {
if (gh_process_msg(info) < 0) {
ERR_LOG("problem processing messages: %s\n",
gh_get_error(info));
}
} else if (rc < 0) {
ERR_LOG("select(): %m");
}
}
}
int main()
{
int fd = gh_init(msg_handler, SCALE_AGENT_ADDR, &info);
if (fd == -1) {
if (!info)
ERR_LOG("Unable to allocate memory for info: %m");
else
ERR_LOG("Unable to initialize guest/host messaging: %s\n",
gh_get_error(info));
return -1;
}
INFO_LOG("Running offline_cpus script");
system("offline_cpus");
wait_for_messages(fd);
return 0;
}

View File

@ -1,534 +0,0 @@
/**
* Copyright (c) <2013-2016>, Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This is intended to run as a helper function, called by nova, to pass data up
* into the guest and receive data back from the guest and return it to nova.
*/
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <sys/time.h>
#include <signal.h>
#include <unistd.h>
#include <cgcs/host_guest_msg.h>
#include <json-c/json.h>
#include "misc.h"
hg_info_t *info;
#define SPARE_ALLOC 128
#define INSTANCE_NAME_SIZE 32
#define NACK_LOG_SIZE 500
#define UNIX_ADDR_LEN 16
#define DEFAULT_TIMEOUT_MS 1000
#define TIMEOUT_OVERHEAD_MS 500
#define MIN_SCRIPT_TIMEOUT_MS 500
int timeout_ms = DEFAULT_TIMEOUT_MS;
int *request_online_cpus;
int len_request_online_cpus;
int request_cpu;
void usage() {
printf("guest_scale_helper --instance_name <name>\n");
printf(" --cpu_del | --cpu_add <index> <cur_mask>\n");
printf(" [--timeout <millisec, at least 1000>]\n");
printf("\n");
exit(-1);
}
void handle_cpu_scale_up(json_object *jobj_response, const char *source_instance)
{
int rc = -1;
char log_msg[NACK_LOG_SIZE];
struct json_object *jobj_result;
if (!json_object_object_get_ex(jobj_response, RESULT, &jobj_result)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse result");
goto failed;
}
const char *result = json_object_get_string(jobj_result);
if (!strcmp(result, "fail")) {
struct json_object *jobj_err_msg;
const char *err_msg;
if (!json_object_object_get_ex(jobj_response, ERR_MSG, &jobj_err_msg))
err_msg="";
else
err_msg = json_object_get_string(jobj_err_msg);
ERR_LOG("Error: guest helper scaling cpu up failed: %s\n", err_msg);
goto out;
}
struct json_object *jobj_online_cpu;
if (!json_object_object_get_ex(jobj_response, ONLINE_CPU, &jobj_online_cpu)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse online_cpu");
goto failed;
}
int online_cpu = json_object_get_int(jobj_online_cpu);
struct json_object *jobj_online_cpus;
json_object_object_get_ex(jobj_response, ONLINE_CPUS, &jobj_online_cpus);
if (!json_object_is_type(jobj_online_cpus, json_type_array)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse online_cpus");
goto failed;
}
int i, len_response;
len_response = json_object_array_length(jobj_online_cpus);
int *response_online_cpus = malloc(len_response*sizeof(int));
for (i=0; i< len_response; i++){
response_online_cpus[i] = json_object_get_int(json_object_array_get_idx(jobj_online_cpus, i));
}
// compare request and response, assuming cpus are in the same order
if ( (len_response - len_request_online_cpus ) <=1 ) {
int req =0;
int rsp = 0;
int found_req = 0;
while (req < len_request_online_cpus){
if (response_online_cpus[rsp] == request_online_cpus[req]) {
req++; rsp++;
} else if (response_online_cpus[rsp] == request_cpu) {
rsp++;
found_req = 1;
// protect against infinite loop
if (rsp == len_response)
break;
} else {
ERR_LOG("Error: cpu %d online by guest but not online in nova\n", response_online_cpus[rsp]);
break;
}
}
if ((!found_req) && (req == len_request_online_cpus)) {
if ((len_response == len_request_online_cpus) ||
(response_online_cpus[len_response] != request_cpu)) {
ERR_LOG("Error: cpu %d online by nova but not online in guest\n", response_online_cpus[req]);
}
}
}
else {
ERR_LOG("Error: guest's online cpu range doesn't match nova\n");
char buf[1024];
print_array(buf, response_online_cpus, len_response);
ERR_LOG("guest online cpu range: %s\n", buf);
}
// Yay, everything looks good.
free(response_online_cpus);
free(request_online_cpus);
exit(online_cpu);
rc = online_cpu;
failed:
send_nack(log_msg, source_instance);
out:
free(request_online_cpus);
exit(rc);
}
void handle_cpu_scale_down(json_object *jobj_response, const char *source_instance)
{
int rc = -1;
struct json_object *jobj_result;
char log_msg[NACK_LOG_SIZE];
if (!json_object_object_get_ex(jobj_response, RESULT, &jobj_result)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse result");
goto failed;
}
const char *result = json_object_get_string(jobj_result);
if (!strcmp(result, "fail")) {
struct json_object *jobj_err_msg;
const char *err_msg;
if (!json_object_object_get_ex(jobj_response, ERR_MSG, &jobj_err_msg))
err_msg="";
else
err_msg = json_object_get_string(jobj_err_msg);
ERR_LOG("problem, guest helper scaling cpu down failed: %s\n", err_msg);
goto out;
}
struct json_object *jobj_offline_cpu;
if (!json_object_object_get_ex(jobj_response, OFFLINE_CPU, &jobj_offline_cpu)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse offline_cpu");
goto failed;
}
int offline_cpu = json_object_get_int(jobj_offline_cpu);
struct json_object *jobj_online_cpus;
json_object_object_get_ex(jobj_response, ONLINE_CPUS, &jobj_online_cpus);
if (!json_object_is_type(jobj_online_cpus, json_type_array)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse online_cpus");
goto failed;
}
int i, len_response;
len_response = json_object_array_length(jobj_online_cpus);
int *response_online_cpus = malloc(len_response*sizeof(int));
for (i=0; i< len_response; i++){
response_online_cpus[i] = json_object_get_int(json_object_array_get_idx(jobj_online_cpus, i));
}
if (response_online_cpus[len_response] > offline_cpu) {
ERR_LOG("Error: cpu %d is still online in guest\n", offline_cpu);
}
// Yay, everything looks good.
free(response_online_cpus);
free(request_online_cpus);
rc = offline_cpu;
exit(rc);
failed:
send_nack(log_msg, source_instance);
out:
free(request_online_cpus);
exit(rc);
}
// This should call exit(0) on success or exit(-1) on permanent failure().
// Returning will continue listening.
// Theoretically this could come from any instance, need to fix that.
void msg_handler(const char *source_addr, const char *source_instance, struct json_object *jobj_response)
{
// parse version
struct json_object *jobj_version;
char log_msg[NACK_LOG_SIZE];
if (!json_object_object_get_ex(jobj_response, VERSION, &jobj_version)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse version");
goto failed;
}
int version = json_object_get_int(jobj_version);
if (version != CUR_VERSION) {
snprintf(log_msg, NACK_LOG_SIZE, "invalid version %d, expecting %d", version, CUR_VERSION);
goto failed;
}
struct json_object *jobj_resource;
if (!json_object_object_get_ex(jobj_response, RESOURCE, &jobj_resource)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse resource");
goto failed;
}
const char *resource = json_object_get_string(jobj_resource);
struct json_object *jobj_direction;
if (!json_object_object_get_ex(jobj_response, DIRECTION, &jobj_direction)) {
snprintf(log_msg, NACK_LOG_SIZE, "failed to parse direction");
goto failed;
}
const char *direction = json_object_get_string(jobj_direction);
if (!strcmp(resource,"cpu")) {
if (!strcmp(direction,"up")) {
handle_cpu_scale_up(jobj_response, source_instance);
} else if (!strcmp(direction,"down")) {
handle_cpu_scale_down(jobj_response, source_instance);
}
}
// if handle_cpu_scale_up/down is called, program should exit,
// so this is only called when scale up/down are not properly handled.
sprintf(log_msg, "unknown message, resource %s, direction %s",
resource, direction);
failed:
send_nack(log_msg, source_instance);
}
// instance_name will be of the form instance-xxxxxxxx
// We want to make a name of the form scale-xxxxxxxx
void instance_to_addr(const char *instance_name, char *addr)
{
const char *match = "instance-";
const char *replace = "scale-";
char *tmp = strstr(instance_name, match);
if (!tmp) {
ERR_LOG("Instance name %s doesn't match expected pattern\n",
instance_name);
exit(-1);
}
strcpy(addr, replace);
strncpy(addr+strlen(replace), instance_name+strlen(match),
UNIX_ADDR_LEN-strlen(replace)-1);
addr[UNIX_ADDR_LEN-1]='\0';
}
void handle_message(const char *request, const char *instance_name)
{
int rc;
fd_set rfds, rfds_tmp;
int fd;
char addr[UNIX_ADDR_LEN];
INFO_LOG("handling scaling request: %s", request);
// Create a unique address from the instance name. When using a helper app
// this is needed in order to handle simultaneous scale events for different
// servers on the same hypervisor.
instance_to_addr(instance_name, addr);
fd = hg_init(msg_handler, addr, &info);
if (fd == -1) {
if (!info)
ERR_LOG("Unable to allocate memory for info: %m");
else
ERR_LOG("Unable to initialize guest/host messaging: %s\n",
hg_get_error(info));
exit(-1);
}
rc = hg_send_msg(info, SCALE_AGENT_ADDR, instance_name, request);
if (rc < 0) {
ERR_LOG("hg_send_msg failed: %s\n", hg_get_error(info));
exit(-1);
}
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
while(1) {
rfds_tmp = rfds;
rc = select(fd+1, &rfds_tmp, NULL, NULL, NULL);
if (rc > 0) {
if (hg_process_msg(info) < 0) {
ERR_LOG("problem processing messages: %s\n",
hg_get_error(info));
}
} else if (rc < 0) {
ERR_LOG("select(): %m");
}
}
}
void send_nack(char *log_msg, const char *instance_name)
{
ERR_LOG("sending Nack with error: %s\n", log_msg);
struct json_object *jobj_msg = json_object_new_object();
if (jobj_msg == NULL) {
ERR_LOG("failed to allocate json object for nack msg\n");
return;
}
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
json_object_object_add(jobj_msg, MSG_TYPE, json_object_new_string(MSG_TYPE_NACK));
json_object_object_add(jobj_msg, LOG_MSG, json_object_new_string(log_msg));
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
hg_send_msg(info, SCALE_AGENT_ADDR, instance_name, msg);
json_object_put(jobj_msg);
}
void handle_timeout(int sig)
{
_exit(-2);
}
void setup_timeout(int timeout_ms)
{
int rc;
struct itimerval itv;
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = 0;
itv.it_value.tv_usec = timeout_ms * 1000;
// normalize the timer
while(itv.it_value.tv_usec >= 1000000) {
itv.it_value.tv_usec -= 1000000;
itv.it_value.tv_sec += 1;
}
rc = setitimer(ITIMER_REAL, &itv, NULL);
if (rc < 0) {
ERR_LOG("unable to set timeout");
exit(-1);
}
if (signal(SIGALRM, handle_timeout) == SIG_ERR)
ERR_LOG("unable to set timeout handler, continuing anyway: %m");
}
struct json_object *create_new_jobj_msg(int timeout_ms,
const char *resource,
const char *direction,
int cpu,
const char *online_cpus)
{
//validate values
if (timeout_ms < TIMEOUT_OVERHEAD_MS) {
printf("timeout %d too short\n", timeout_ms);
goto invalid_values;
}
if (strcmp(resource, "cpu")!=0) {
printf("invalid resource %s\n", resource);
goto invalid_values;
}
struct json_object *jobj_online_cpus;
if (!strcmp(direction, "up")) {
jobj_online_cpus = json_tokener_parse(online_cpus);
if (!json_object_is_type(jobj_online_cpus, json_type_array)) {
printf("invalid online_cpus %s\n", online_cpus);
goto invalid_values;
}
len_request_online_cpus = json_object_array_length(jobj_online_cpus);
request_online_cpus = malloc(len_request_online_cpus*sizeof(int));
int i;
for (i=0; i< len_request_online_cpus; i++) {
request_online_cpus[i] = json_object_get_int(json_object_array_get_idx(jobj_online_cpus, i));
}
} else if (strcmp(direction, "down")!=0) {
printf("invalid direction %s\n", direction);
goto invalid_values;
}
struct json_object *jobj_msg = json_object_new_object();
if (jobj_msg == NULL) {
printf("failed to allocate json object for msg\n");
return NULL;
}
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
json_object_object_add(jobj_msg, MSG_TYPE, json_object_new_string(MSG_TYPE_SCALE_REQUEST));
json_object_object_add(jobj_msg, TIMEOUT_MS, json_object_new_int(timeout_ms - MIN_SCRIPT_TIMEOUT_MS));
json_object_object_add(jobj_msg, RESOURCE, json_object_new_string(resource));
json_object_object_add(jobj_msg, DIRECTION, json_object_new_string(direction));
if (!strcmp(direction, "up")) {
json_object_object_add(jobj_msg, ONLINE_CPU, json_object_new_int(cpu));
json_object_object_add(jobj_msg, ONLINE_CPUS, jobj_online_cpus);
}
return jobj_msg;
invalid_values:
usage();
return NULL;
}
int main(int argc, char *argv[])
{
int i;
char *instance_name;
// msg values
int cpu;
const char *resource;
const char *direction;
const char *request_online_cpus_str = NULL;
for(i=1;i<argc;i++) {
if (0==strcmp(argv[i], "--timeout")) {
i++;
if (i<argc) {
timeout_ms = atoi(argv[i]);
} else {
printf("timeout option specified without timeout value\n");
usage();
}
} else if (0==strcmp(argv[i], "--instance_name")) {
i++;
if (i<argc) {
int len = strlen(argv[i]) + 1;
if (len > INSTANCE_NAME_SIZE) {
printf("instance name is too large\n");
usage();
} else
instance_name = argv[i];
}
else {
printf("instance_name option specified without name\n");
usage();
}
} else if (0==strcmp(argv[i], "--cpu_add")) {
i++;
if (i<argc) {
cpu = atoi(argv[i]);
i++;
if (i<argc) {
request_online_cpus_str = argv[i];
} else {
printf("cpu_add option specified but missing online cpu range\n");
usage();
}
} else {
printf("cpu_add option specified but missing cpu\n");
usage();
}
resource = "cpu";
direction = "up";
} else if (0==strcmp(argv[i], "--cpu_del")) {
resource = "cpu";
direction = "down";
} else if (0==strcmp(argv[i], "--help")) {
usage();
} else {
printf("Unknown argument %s\n", argv[i]);
usage();
}
}
struct json_object *jobj_msg = create_new_jobj_msg(timeout_ms, resource, direction,
cpu, request_online_cpus_str);
if (jobj_msg == NULL) {
return -1;
}
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
// save request data to compare with response
request_cpu = cpu;
setup_timeout(timeout_ms);
handle_message(msg, instance_name);
json_object_put(jobj_msg);
return 0;
}

View File

@ -1,81 +0,0 @@
/**
* Copyright (c) <2015-2016>, Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <syslog.h>
#define CUR_VERSION 2
#define LOG_MSG_SIZE 100
#define SCALE_AGENT_ADDR "cgcs.scale"
#define ERRORSIZE 400
// keys for guest scaling messages
#define VERSION "version"
#define TIMEOUT_MS "timeout_ms"
#define RESOURCE "resource"
#define DIRECTION "direction"
#define ONLINE_CPU "online_cpu"
#define OFFLINE_CPU "offline_cpu"
#define ONLINE_CPUS "online_cpus"
#define RESULT "result"
#define ERR_MSG "err_msg"
#define MSG_TYPE "msg_type"
#define LOG_MSG "log_msg" // for Nack
// message types for scaling messages
#define MSG_TYPE_SCALE_REQUEST "scale_request"
#define MSG_TYPE_NACK "nack"
char errorbuf[ERRORSIZE];
#define LOG(priority, format, ...) \
syslog(priority, "%s(%d): " format, __FILE__, __LINE__, ##__VA_ARGS__)
#define ERR_LOG(format, ...) \
do { \
LOG(LOG_DAEMON|LOG_ERR, format, ##__VA_ARGS__); \
fprintf(stderr, format, ##__VA_ARGS__); \
snprintf(errorbuf, sizeof(errorbuf)-1, format, ##__VA_ARGS__); \
} while (0)
#define INFO_LOG(format, ...) \
do { \
LOG(LOG_DAEMON|LOG_INFO, format, ##__VA_ARGS__); \
} while (0)
struct online_cpus {
int numcpus;
char status[];
};
struct online_cpus *range_to_array(const char *range);
struct json_object *new_json_obj_from_array (struct online_cpus *cpuarray);
void print_array(char *buf, int *array, int len);

View File

@ -1,4 +0,0 @@
# Ignore everything in this directory
*
# Except this file
!.gitignore

View File

@ -1,152 +0,0 @@
/**
* Copyright (c) <2013-2016>, Wind River Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2) Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
* used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <json-c/json.h>
#include "misc.h"
/* Print a range of numbers in a consistent way. */
char print_range(int start, int end, char *str)
{
int len;
if (start == end)
len = sprintf(str, "%d,", start);
else
len = sprintf(str, "%d-%d,", start, end);
return len;
}
void print_array(char *buf, int *array, int len) {
int i;
for(i = 0; i < len; i++) {
sprintf(buf+strlen(buf),"%d,", array[i]);
}
// remove the last comma
buf[strlen(buf)-1]='\0';
}
#define BUFLEN 1024
/* Takes as input a string representation of online cpus of the form
* "0,1,3-5", and allocates and returns a struct representing whether
* each given cpu is online.
*/
struct online_cpus *range_to_array(const char *range)
{
struct online_cpus *cpuarray = (struct online_cpus *) malloc(BUFLEN);
int start, end;
int inrange = 0;
char *token, *tmp, *tobe_free;
int done = 0;
tobe_free = strdup(range);
token = tmp = tobe_free;
if (*tmp == '\0') {
/* empty string, no online cpus */
cpuarray->numcpus = 0;
free(tobe_free);
return cpuarray;
}
while (1) {
tmp++;
if (*tmp == '\0')
done = 1;
if (done || (*tmp == ',')) {
/* expect single value or ending a range */
if (!token) {
ERR_LOG("format error, missing token, unable to parse range\n");
goto error;
}
*tmp = '\0';
end = atoi(token);
token = 0;
if (inrange) {
int i;
for (i=start; i<= end; i++)
cpuarray->status[i] = 1;
inrange = 0;
} else {
cpuarray->status[end] = 1;
}
} else if (*tmp == '-') {
if (inrange) {
ERR_LOG("format error, unable to parse range\n");
goto error;
}
if (!token) {
ERR_LOG("format error, missing token, unable to parse range\n");
goto error;
}
*tmp = '\0';
start = atoi(token);
token = 0;
inrange = 1;
} else {
/* expect a numerical value */
if ((*tmp < '0') || (*tmp > '9')) {
ERR_LOG("format error, expected a numerical value, unable to parse range\n");
goto error;
}
if (!token)
token = tmp;
}
if (done)
break;
}
cpuarray->numcpus = end+1;
free(tobe_free);
return cpuarray;
error:
free(cpuarray);
free(tobe_free);
return 0;
}
struct json_object *new_json_obj_from_array (struct online_cpus *cpuarray)
{
int i;
struct json_object *jobj_array = json_object_new_array();
if (jobj_array == NULL) {
return NULL;
}
for (i=0;i<cpuarray->numcpus;i++) {
if (cpuarray->status[i]) {
json_object_array_add(jobj_array, json_object_new_int(i));
}
}
return jobj_array;
}

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@ -1,67 +0,0 @@
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <misc.h>
void printstruct(struct online_cpus *cpuarray)
{
int i;
printf("num cpus: %d\n", cpuarray->numcpus);
for (i=0;i<cpuarray->numcpus;i++)
printf("%d: %d\n", i, cpuarray->status[i]);
}
struct online_cpus cpus = {15, {1,0,0,0,0,0,1,1,1,0,0,0,1,1,1}};
int main()
{
char *str, *str2;
struct online_cpus *newcpus;
printf("initial: \n");
printstruct(&cpus);
printf("string:\n");
str = "0,6-8,12-14";
newcpus = range_to_array(str);
printf("fromstring: \n");
printstruct(newcpus);
newcpus = range_to_array("");
printf("empty: \n");
printstruct(newcpus);
newcpus = range_to_array("0--2");
newcpus = range_to_array("0-1-2");
newcpus = range_to_array("0,,2");
newcpus = range_to_array("0,-2");
newcpus = range_to_array("1,2-a");
return 0;
}

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@ -1,107 +0,0 @@
#!/bin/bash
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# This is a basic sample script showing what the script needs to be able to do.
# The script can be edited as needed or replaced by a script or binary that
# works in the same way, or can be deleted entirely if the default behaviour
# of offlining the highest-numbered CPU is satisfactory and you don't care
# about logging scaling events.
#
# We expect to be called in one of the following ways:
#
# "--cpu_add <cpu> <new cpu range>"
#
# This indicates that "cpu" has been set online, and we can now make use of it.
# Do whatever is necessary to start using it, then return 0.
#
#
# "--cpu_del"
# In this case we pick an online cpu to offline, and do whatever we need to in
# order to stop using it, and return the cpu number. Note that CPU 0 must
# always remain online.
info_log()
{
logger -p daemon.info -t $0 "$*"
echo $*
}
err_log()
{
logger -p daemon.err -t $0 "$*"
echo $*
}
usage()
{
err_log "usage: $0 {--cpu_del | --cpu_add <cpu> <new cpu range>}"
exit -1
}
cpu_scale_up ()
{
CPU_NUM=$1
CPU_ONLINE_RANGE=$2
info_log "cpu add notification, cpu: ${CPU_NUM}"
info_log "cpu_online_range: ${CPU_ONLINE_RANGE}"
}
cpu_scale_down ()
{
# Make sure host & guest views of offline cpus are consistent
/usr/sbin/offline_cpus
info_log "cpu del request"
#pick the highest online cpu
CPUS_ONLINE=`cat /sys/devices/system/cpu/online`
CPU_NUM=${CPUS_ONLINE##*[,-]}
info_log "selected cpu ${CPU_NUM} to offline"
return $CPU_NUM
}
if [ $# -lt 1 ]
then
usage
elif [ $1 = "--cpu_add" ]
then
if [ $# = 3 ]
then
cpu_scale_up $2 $3
else
err_log "--cpu_add option called with $# args, expected 3"
usage
fi
elif [ $1 = "--cpu_del" ]
then
cpu_scale_down
else
usage
fi

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@ -1,13 +0,0 @@
[Unit]
Description=Guest Scale Agent
After=cloud-init.service
Wants=guest-agent.service
[Service]
ExecStart=/usr/sbin/guest_scale_agent
Type=simple
Restart=always
RestartSec=0
[Install]
WantedBy=multi-user.target

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@ -1,64 +0,0 @@
#!/bin/sh
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
DAEMON=/usr/sbin/offline_cpus
NAME=offline_cpus
DESC="offline cpus marked offline by hypervisor"
ARGS=
test -f $DAEMON || exit 0
case "$1" in
start)
echo -n "running $DESC: $NAME... "
$DAEMON $ARGS
echo "done."
;;
stop)
echo -n "stopping $DESC: $NAME... "
echo "done."
;;
status)
echo -n "$NAME is not running"
;;
restart)
echo "restarting $DESC: $NAME... "
$0 stop
$0 start
echo "done."
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
exit 1
;;
esac
exit 0

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@ -1,12 +0,0 @@
[Unit]
Description=Titanium Cloud agent and helper app to scale VMs up/down
After=cloud-init.service
[Service]
Type=simple
RemainAfterExit=yes
ExecStart=/etc/init.d/offline_cpus start
ExecStop=/etc/init.d/offline_cpus stop
[Install]
WantedBy=multi-user.target

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@ -1,54 +0,0 @@
#!/bin/bash
#
# Copyright(c) 2013-2016, Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Wind River Systems nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Query the metadata server for the set of cpus that are supposed to be offline
# It will be in the form "set([])" for the empty set, and "set([1, 2, 3])" for the
# non-empty set.
CPUSET_OFFLINE=`wget -t 3 -T 5 -qO - http://169.254.169.254/latest/meta-data/offline_cpuset`
RC=$?
if [ $RC -ne 0 ]
then
logger -p daemon.err "${0}: unable to obtain "offline_cpuset" value. rc: ${RC}"
exit -1
fi
OFFLINE_CPUS=`echo ${CPUSET_OFFLINE}|grep -oE [0-9]+`
for CPU in $OFFLINE_CPUS
do
# Offline this cpu to match the underlying virtual machine.
echo 0 > /sys/devices/system/cpu/cpu${CPU}/online
RC=$?
if [ $RC -ne 0 ]
then
logger -p daemon.err "${0}: unable to offline cpu ${CPU}. rc: ${RC}"
exit -1
fi
done