openstack/devstack
Code Issues Proposed changes
e2907b4838
devstack/functions-common
Sean Dague 45917cc4d9 xtrace less 
we are xtrace happy, however that's just generating bulk in log
files that are mostly ignorable. For the basically bullet proof
functions we should not xtrace.

Change-Id: Iab4e6d270c1546e0db2a06395cefcdf7f7929c3c
2014-02-25 06:25:14 -05:00

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# functions-common - Common functions used by DevStack components
#
# The canonical copy of this file is maintained in the DevStack repo.
# All modifications should be made there and then sync'ed to other repos
# as required.
#
# This file is sorted alphabetically within the function groups.
#
# - Config Functions
# - Control Functions
# - Distro Functions
# - Git Functions
# - OpenStack Functions
# - Package Functions
# - Process Functions
# - Python Functions
# - Service Functions
#
# The following variables are assumed to be defined by certain functions:
#
# - ``ENABLED_SERVICES``
# - ``ERROR_ON_CLONE``
# - ``FILES``
# - ``OFFLINE``
# - ``PIP_DOWNLOAD_CACHE``
# - ``PIP_USE_MIRRORS``
# - ``RECLONE``
# - ``TRACK_DEPENDS``
# - ``http_proxy``, ``https_proxy``, ``no_proxy``
# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace
# Config Functions
# ================
# Append a new option in an ini file without replacing the old value
# iniadd config-file section option value1 value2 value3 ...
function iniadd() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
shift 3
local values="$(iniget_multiline $file $section $option) $@"
iniset_multiline $file $section $option $values
$xtrace
}
# Comment an option in an INI file
# inicomment config-file section option
function inicomment() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
sed -i -e "/^\[$section\]/,/^\[.*\]/ s|^\($option[ \t]*=.*$\)|#\1|" "$file"
$xtrace
}
# Get an option from an INI file
# iniget config-file section option
function iniget() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
local line
line=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
echo ${line#*=}
$xtrace
}
# Get a multiple line option from an INI file
# iniget_multiline config-file section option
function iniget_multiline() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
local values
values=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { s/^$option[ \t]*=[ \t]*//gp; }" "$file")
echo ${values}
$xtrace
}
# Determinate is the given option present in the INI file
# ini_has_option config-file section option
function ini_has_option() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
local line
line=$(sed -ne "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ p; }" "$file")
$xtrace
[ -n "$line" ]
}
# Set an option in an INI file
# iniset config-file section option value
function iniset() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
local value=$4
[[ -z $section || -z $option ]] && return
if ! grep -q "^\[$section\]" "$file" 2>/dev/null; then
# Add section at the end
echo -e "\n[$section]" >>"$file"
fi
if ! ini_has_option "$file" "$section" "$option"; then
# Add it
sed -i -e "/^\[$section\]/ a\\
$option = $value
" "$file"
else
local sep=$(echo -ne "\x01")
# Replace it
sed -i -e '/^\['${section}'\]/,/^\[.*\]/ s'${sep}'^\('${option}'[ \t]*=[ \t]*\).*$'${sep}'\1'"${value}"${sep} "$file"
fi
$xtrace
}
# Set a multiple line option in an INI file
# iniset_multiline config-file section option value1 value2 valu3 ...
function iniset_multiline() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
shift 3
local values
for v in $@; do
# The later sed command inserts each new value in the line next to
# the section identifier, which causes the values to be inserted in
# the reverse order. Do a reverse here to keep the original order.
values="$v ${values}"
done
if ! grep -q "^\[$section\]" "$file"; then
# Add section at the end
echo -e "\n[$section]" >>"$file"
else
# Remove old values
sed -i -e "/^\[$section\]/,/^\[.*\]/ { /^$option[ \t]*=/ d; }" "$file"
fi
# Add new ones
for v in $values; do
sed -i -e "/^\[$section\]/ a\\
$option = $v
" "$file"
done
$xtrace
}
# Uncomment an option in an INI file
# iniuncomment config-file section option
function iniuncomment() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local file=$1
local section=$2
local option=$3
sed -i -e "/^\[$section\]/,/^\[.*\]/ s|[^ \t]*#[ \t]*\($option[ \t]*=.*$\)|\1|" "$file"
$xtrace
}
# Normalize config values to True or False
# Accepts as False: 0 no No NO false False FALSE
# Accepts as True: 1 yes Yes YES true True TRUE
# VAR=$(trueorfalse default-value test-value)
function trueorfalse() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local default=$1
local testval=$2
[[ -z "$testval" ]] && { echo "$default"; return; }
[[ "0 no No NO false False FALSE" =~ "$testval" ]] && { echo "False"; return; }
[[ "1 yes Yes YES true True TRUE" =~ "$testval" ]] && { echo "True"; return; }
echo "$default"
$xtrace
}
# Control Functions
# =================
# Prints backtrace info
# filename:lineno:function
# backtrace level
function backtrace {
local level=$1
local deep=$((${#BASH_SOURCE[@]} - 1))
echo "[Call Trace]"
while [ $level -le $deep ]; do
echo "${BASH_SOURCE[$deep]}:${BASH_LINENO[$deep-1]}:${FUNCNAME[$deep-1]}"
deep=$((deep - 1))
done
}
# Prints line number and "message" then exits
# die $LINENO "message"
function die() {
local exitcode=$?
set +o xtrace
local line=$1; shift
if [ $exitcode == 0 ]; then
exitcode=1
fi
backtrace 2
err $line "$*"
exit $exitcode
}
# Checks an environment variable is not set or has length 0 OR if the
# exit code is non-zero and prints "message" and exits
# NOTE: env-var is the variable name without a '$'
# die_if_not_set $LINENO env-var "message"
function die_if_not_set() {
local exitcode=$?
FXTRACE=$(set +o | grep xtrace)
set +o xtrace
local line=$1; shift
local evar=$1; shift
if ! is_set $evar || [ $exitcode != 0 ]; then
die $line "$*"
fi
$FXTRACE
}
# Prints line number and "message" in error format
# err $LINENO "message"
function err() {
local exitcode=$?
errXTRACE=$(set +o | grep xtrace)
set +o xtrace
local msg="[ERROR] ${BASH_SOURCE[2]}:$1 $2"
echo $msg 1>&2;
if [[ -n ${SCREEN_LOGDIR} ]]; then
echo $msg >> "${SCREEN_LOGDIR}/error.log"
fi
$errXTRACE
return $exitcode
}
# Checks an environment variable is not set or has length 0 OR if the
# exit code is non-zero and prints "message"
# NOTE: env-var is the variable name without a '$'
# err_if_not_set $LINENO env-var "message"
function err_if_not_set() {
local exitcode=$?
errinsXTRACE=$(set +o | grep xtrace)
set +o xtrace
local line=$1; shift
local evar=$1; shift
if ! is_set $evar || [ $exitcode != 0 ]; then
err $line "$*"
fi
$errinsXTRACE
return $exitcode
}
# Exit after outputting a message about the distribution not being supported.
# exit_distro_not_supported [optional-string-telling-what-is-missing]
function exit_distro_not_supported {
if [[ -z "$DISTRO" ]]; then
GetDistro
fi
if [ $# -gt 0 ]; then
die $LINENO "Support for $DISTRO is incomplete: no support for $@"
else
die $LINENO "Support for $DISTRO is incomplete."
fi
}
# Test if the named environment variable is set and not zero length
# is_set env-var
function is_set() {
local var=\$"$1"
eval "[ -n \"$var\" ]" # For ex.: sh -c "[ -n \"$var\" ]" would be better, but several exercises depends on this
}
# Prints line number and "message" in warning format
# warn $LINENO "message"
function warn() {
local exitcode=$?
errXTRACE=$(set +o | grep xtrace)
set +o xtrace
local msg="[WARNING] ${BASH_SOURCE[2]}:$1 $2"
echo $msg 1>&2;
if [[ -n ${SCREEN_LOGDIR} ]]; then
echo $msg >> "${SCREEN_LOGDIR}/error.log"
fi
$errXTRACE
return $exitcode
}
# Distro Functions
# ================
# Determine OS Vendor, Release and Update
# Tested with OS/X, Ubuntu, RedHat, CentOS, Fedora
# Returns results in global variables:
# os_VENDOR - vendor name
# os_RELEASE - release
# os_UPDATE - update
# os_PACKAGE - package type
# os_CODENAME - vendor's codename for release
# GetOSVersion
GetOSVersion() {
# Figure out which vendor we are
if [[ -x "`which sw_vers 2>/dev/null`" ]]; then
# OS/X
os_VENDOR=`sw_vers -productName`
os_RELEASE=`sw_vers -productVersion`
os_UPDATE=${os_RELEASE##*.}
os_RELEASE=${os_RELEASE%.*}
os_PACKAGE=""
if [[ "$os_RELEASE" =~ "10.7" ]]; then
os_CODENAME="lion"
elif [[ "$os_RELEASE" =~ "10.6" ]]; then
os_CODENAME="snow leopard"
elif [[ "$os_RELEASE" =~ "10.5" ]]; then
os_CODENAME="leopard"
elif [[ "$os_RELEASE" =~ "10.4" ]]; then
os_CODENAME="tiger"
elif [[ "$os_RELEASE" =~ "10.3" ]]; then
os_CODENAME="panther"
else
os_CODENAME=""
fi
elif [[ -x $(which lsb_release 2>/dev/null) ]]; then
os_VENDOR=$(lsb_release -i -s)
os_RELEASE=$(lsb_release -r -s)
os_UPDATE=""
os_PACKAGE="rpm"
if [[ "Debian,Ubuntu,LinuxMint" =~ $os_VENDOR ]]; then
os_PACKAGE="deb"
elif [[ "SUSE LINUX" =~ $os_VENDOR ]]; then
lsb_release -d -s | grep -q openSUSE
if [[ $? -eq 0 ]]; then
os_VENDOR="openSUSE"
fi
elif [[ $os_VENDOR == "openSUSE project" ]]; then
os_VENDOR="openSUSE"
elif [[ $os_VENDOR =~ Red.*Hat ]]; then
os_VENDOR="Red Hat"
fi
os_CODENAME=$(lsb_release -c -s)
elif [[ -r /etc/redhat-release ]]; then
# Red Hat Enterprise Linux Server release 5.5 (Tikanga)
# Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
# CentOS release 5.5 (Final)
# CentOS Linux release 6.0 (Final)
# Fedora release 16 (Verne)
# XenServer release 6.2.0-70446c (xenenterprise)
os_CODENAME=""
for r in "Red Hat" CentOS Fedora XenServer; do
os_VENDOR=$r
if [[ -n "`grep \"$r\" /etc/redhat-release`" ]]; then
ver=`sed -e 's/^.* \([0-9].*\) (\(.*\)).*$/\1\|\2/' /etc/redhat-release`
os_CODENAME=${ver#*|}
os_RELEASE=${ver%|*}
os_UPDATE=${os_RELEASE##*.}
os_RELEASE=${os_RELEASE%.*}
break
fi
os_VENDOR=""
done
os_PACKAGE="rpm"
elif [[ -r /etc/SuSE-release ]]; then
for r in openSUSE "SUSE Linux"; do
if [[ "$r" = "SUSE Linux" ]]; then
os_VENDOR="SUSE LINUX"
else
os_VENDOR=$r
fi
if [[ -n "`grep \"$r\" /etc/SuSE-release`" ]]; then
os_CODENAME=`grep "CODENAME = " /etc/SuSE-release | sed 's:.* = ::g'`
os_RELEASE=`grep "VERSION = " /etc/SuSE-release | sed 's:.* = ::g'`
os_UPDATE=`grep "PATCHLEVEL = " /etc/SuSE-release | sed 's:.* = ::g'`
break
fi
os_VENDOR=""
done
os_PACKAGE="rpm"
# If lsb_release is not installed, we should be able to detect Debian OS
elif [[ -f /etc/debian_version ]] && [[ $(cat /proc/version) =~ "Debian" ]]; then
os_VENDOR="Debian"
os_PACKAGE="deb"
os_CODENAME=$(awk '/VERSION=/' /etc/os-release | sed 's/VERSION=//' | sed -r 's/\"|\(|\)//g' | awk '{print $2}')
os_RELEASE=$(awk '/VERSION_ID=/' /etc/os-release | sed 's/VERSION_ID=//' | sed 's/\"//g')
fi
export os_VENDOR os_RELEASE os_UPDATE os_PACKAGE os_CODENAME
}
# Translate the OS version values into common nomenclature
# Sets global ``DISTRO`` from the ``os_*`` values
function GetDistro() {
GetOSVersion
if [[ "$os_VENDOR" =~ (Ubuntu) || "$os_VENDOR" =~ (Debian) ]]; then
# 'Everyone' refers to Ubuntu / Debian releases by the code name adjective
DISTRO=$os_CODENAME
elif [[ "$os_VENDOR" =~ (Fedora) ]]; then
# For Fedora, just use 'f' and the release
DISTRO="f$os_RELEASE"
elif [[ "$os_VENDOR" =~ (openSUSE) ]]; then
DISTRO="opensuse-$os_RELEASE"
elif [[ "$os_VENDOR" =~ (SUSE LINUX) ]]; then
# For SLE, also use the service pack
if [[ -z "$os_UPDATE" ]]; then
DISTRO="sle${os_RELEASE}"
else
DISTRO="sle${os_RELEASE}sp${os_UPDATE}"
fi
elif [[ "$os_VENDOR" =~ (Red Hat) || "$os_VENDOR" =~ (CentOS) ]]; then
# Drop the . release as we assume it's compatible
DISTRO="rhel${os_RELEASE::1}"
elif [[ "$os_VENDOR" =~ (XenServer) ]]; then
DISTRO="xs$os_RELEASE"
else
# Catch-all for now is Vendor + Release + Update
DISTRO="$os_VENDOR-$os_RELEASE.$os_UPDATE"
fi
export DISTRO
}
# Utility function for checking machine architecture
# is_arch arch-type
function is_arch {
ARCH_TYPE=$1
[[ "$(uname -m)" == "$ARCH_TYPE" ]]
}
# Determine if current distribution is a Fedora-based distribution
# (Fedora, RHEL, CentOS, etc).
# is_fedora
function is_fedora {
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
[ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || [ "$os_VENDOR" = "CentOS" ]
}
# Determine if current distribution is a SUSE-based distribution
# (openSUSE, SLE).
# is_suse
function is_suse {
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
[ "$os_VENDOR" = "openSUSE" ] || [ "$os_VENDOR" = "SUSE LINUX" ]
}
# Determine if current distribution is an Ubuntu-based distribution
# It will also detect non-Ubuntu but Debian-based distros
# is_ubuntu
function is_ubuntu {
if [[ -z "$os_PACKAGE" ]]; then
GetOSVersion
fi
[ "$os_PACKAGE" = "deb" ]
}
# Git Functions
# =============
# Returns openstack release name for a given branch name
# ``get_release_name_from_branch branch-name``
function get_release_name_from_branch(){
local branch=$1
if [[ $branch =~ "stable/" ]]; then
echo ${branch#*/}
else
echo "master"
fi
}
# git clone only if directory doesn't exist already. Since ``DEST`` might not
# be owned by the installation user, we create the directory and change the
# ownership to the proper user.
# Set global RECLONE=yes to simulate a clone when dest-dir exists
# Set global ERROR_ON_CLONE=True to abort execution with an error if the git repo
# does not exist (default is False, meaning the repo will be cloned).
# Uses global ``OFFLINE``
# git_clone remote dest-dir branch
function git_clone {
GIT_REMOTE=$1
GIT_DEST=$2
GIT_REF=$3
RECLONE=$(trueorfalse False $RECLONE)
if [[ "$OFFLINE" = "True" ]]; then
echo "Running in offline mode, clones already exist"
# print out the results so we know what change was used in the logs
cd $GIT_DEST
git show --oneline | head -1
return
fi
if echo $GIT_REF | egrep -q "^refs"; then
# If our branch name is a gerrit style refs/changes/...
if [[ ! -d $GIT_DEST ]]; then
[[ "$ERROR_ON_CLONE" = "True" ]] && \
die $LINENO "Cloning not allowed in this configuration"
git clone $GIT_REMOTE $GIT_DEST
fi
cd $GIT_DEST
git fetch $GIT_REMOTE $GIT_REF && git checkout FETCH_HEAD
else
# do a full clone only if the directory doesn't exist
if [[ ! -d $GIT_DEST ]]; then
[[ "$ERROR_ON_CLONE" = "True" ]] && \
die $LINENO "Cloning not allowed in this configuration"
git clone $GIT_REMOTE $GIT_DEST
cd $GIT_DEST
# This checkout syntax works for both branches and tags
git checkout $GIT_REF
elif [[ "$RECLONE" = "True" ]]; then
# if it does exist then simulate what clone does if asked to RECLONE
cd $GIT_DEST
# set the url to pull from and fetch
git remote set-url origin $GIT_REMOTE
git fetch origin
# remove the existing ignored files (like pyc) as they cause breakage
# (due to the py files having older timestamps than our pyc, so python
# thinks the pyc files are correct using them)
find $GIT_DEST -name '*.pyc' -delete
# handle GIT_REF accordingly to type (tag, branch)
if [[ -n "`git show-ref refs/tags/$GIT_REF`" ]]; then
git_update_tag $GIT_REF
elif [[ -n "`git show-ref refs/heads/$GIT_REF`" ]]; then
git_update_branch $GIT_REF
elif [[ -n "`git show-ref refs/remotes/origin/$GIT_REF`" ]]; then
git_update_remote_branch $GIT_REF
else
die $LINENO "$GIT_REF is neither branch nor tag"
fi
fi
fi
# print out the results so we know what change was used in the logs
cd $GIT_DEST
git show --oneline | head -1
}
# git update using reference as a branch.
# git_update_branch ref
function git_update_branch() {
GIT_BRANCH=$1
git checkout -f origin/$GIT_BRANCH
# a local branch might not exist
git branch -D $GIT_BRANCH || true
git checkout -b $GIT_BRANCH
}
# git update using reference as a branch.
# git_update_remote_branch ref
function git_update_remote_branch() {
GIT_BRANCH=$1
git checkout -b $GIT_BRANCH -t origin/$GIT_BRANCH
}
# git update using reference as a tag. Be careful editing source at that repo
# as working copy will be in a detached mode
# git_update_tag ref
function git_update_tag() {
GIT_TAG=$1
git tag -d $GIT_TAG
# fetching given tag only
git fetch origin tag $GIT_TAG
git checkout -f $GIT_TAG
}
# OpenStack Functions
# ===================
# Get the default value for HOST_IP
# get_default_host_ip fixed_range floating_range host_ip_iface host_ip
function get_default_host_ip() {
local fixed_range=$1
local floating_range=$2
local host_ip_iface=$3
local host_ip=$4
# Find the interface used for the default route
host_ip_iface=${host_ip_iface:-$(ip route | sed -n '/^default/{ s/.*dev \(\w\+\)\s\+.*/\1/; p; }' | head -1)}
# Search for an IP unless an explicit is set by ``HOST_IP`` environment variable
if [ -z "$host_ip" -o "$host_ip" == "dhcp" ]; then
host_ip=""
host_ips=`LC_ALL=C ip -f inet addr show ${host_ip_iface} | awk '/inet/ {split($2,parts,"/"); print parts[1]}'`
for IP in $host_ips; do
# Attempt to filter out IP addresses that are part of the fixed and
# floating range. Note that this method only works if the ``netaddr``
# python library is installed. If it is not installed, an error
# will be printed and the first IP from the interface will be used.
# If that is not correct set ``HOST_IP`` in ``localrc`` to the correct
# address.
if ! (address_in_net $IP $fixed_range || address_in_net $IP $floating_range); then
host_ip=$IP
break;
fi
done
fi
echo $host_ip
}
# Grab a numbered field from python prettytable output
# Fields are numbered starting with 1
# Reverse syntax is supported: -1 is the last field, -2 is second to last, etc.
# get_field field-number
function get_field() {
while read data; do
if [ "$1" -lt 0 ]; then
field="(\$(NF$1))"
else
field="\$$(($1 + 1))"
fi
echo "$data" | awk -F'[ \t]*\\|[ \t]*' "{print $field}"
done
}
# Add a policy to a policy.json file
# Do nothing if the policy already exists
# ``policy_add policy_file policy_name policy_permissions``
function policy_add() {
local policy_file=$1
local policy_name=$2
local policy_perm=$3
if grep -q ${policy_name} ${policy_file}; then
echo "Policy ${policy_name} already exists in ${policy_file}"
return
fi
# Add a terminating comma to policy lines without one
# Remove the closing '}' and all lines following to the end-of-file
local tmpfile=$(mktemp)
uniq ${policy_file} | sed -e '
s/]$/],/
/^[}]/,$d
' > ${tmpfile}
# Append policy and closing brace
echo " \"${policy_name}\": ${policy_perm}" >>${tmpfile}
echo "}" >>${tmpfile}
mv ${tmpfile} ${policy_file}
}
# Package Functions
# =================
# _get_package_dir
function _get_package_dir() {
local pkg_dir
if is_ubuntu; then
pkg_dir=$FILES/apts
elif is_fedora; then
pkg_dir=$FILES/rpms
elif is_suse; then
pkg_dir=$FILES/rpms-suse
else
exit_distro_not_supported "list of packages"
fi
echo "$pkg_dir"
}
# Wrapper for ``apt-get`` to set cache and proxy environment variables
# Uses globals ``OFFLINE``, ``*_proxy``
# apt_get operation package [package ...]
function apt_get() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
[[ "$OFFLINE" = "True" || -z "$@" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
$xtrace
$sudo DEBIAN_FRONTEND=noninteractive \
http_proxy=$http_proxy https_proxy=$https_proxy \
no_proxy=$no_proxy \
apt-get --option "Dpkg::Options::=--force-confold" --assume-yes "$@"
}
# get_packages() collects a list of package names of any type from the
# prerequisite files in ``files/{apts|rpms}``. The list is intended
# to be passed to a package installer such as apt or yum.
#
# Only packages required for the services in 1st argument will be
# included. Two bits of metadata are recognized in the prerequisite files:
#
# - ``# NOPRIME`` defers installation to be performed later in `stack.sh`
# - ``# dist:DISTRO`` or ``dist:DISTRO1,DISTRO2`` limits the selection
# of the package to the distros listed. The distro names are case insensitive.
function get_packages() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local services=$@
local package_dir=$(_get_package_dir)
local file_to_parse
local service
if [[ -z "$package_dir" ]]; then
echo "No package directory supplied"
return 1
fi
if [[ -z "$DISTRO" ]]; then
GetDistro
echo "Found Distro $DISTRO"
fi
for service in ${services//,/ }; do
# Allow individual services to specify dependencies
if [[ -e ${package_dir}/${service} ]]; then
file_to_parse="${file_to_parse} $service"
fi
# NOTE(sdague) n-api needs glance for now because that's where
# glance client is
if [[ $service == n-api ]]; then
if [[ ! $file_to_parse =~ nova ]]; then
file_to_parse="${file_to_parse} nova"
fi
if [[ ! $file_to_parse =~ glance ]]; then
file_to_parse="${file_to_parse} glance"
fi
elif [[ $service == c-* ]]; then
if [[ ! $file_to_parse =~ cinder ]]; then
file_to_parse="${file_to_parse} cinder"
fi
elif [[ $service == ceilometer-* ]]; then
if [[ ! $file_to_parse =~ ceilometer ]]; then
file_to_parse="${file_to_parse} ceilometer"
fi
elif [[ $service == s-* ]]; then
if [[ ! $file_to_parse =~ swift ]]; then
file_to_parse="${file_to_parse} swift"
fi
elif [[ $service == n-* ]]; then
if [[ ! $file_to_parse =~ nova ]]; then
file_to_parse="${file_to_parse} nova"
fi
elif [[ $service == g-* ]]; then
if [[ ! $file_to_parse =~ glance ]]; then
file_to_parse="${file_to_parse} glance"
fi
elif [[ $service == key* ]]; then
if [[ ! $file_to_parse =~ keystone ]]; then
file_to_parse="${file_to_parse} keystone"
fi
elif [[ $service == q-* ]]; then
if [[ ! $file_to_parse =~ neutron ]]; then
file_to_parse="${file_to_parse} neutron"
fi
fi
done
for file in ${file_to_parse}; do
local fname=${package_dir}/${file}
local OIFS line package distros distro
[[ -e $fname ]] || continue
OIFS=$IFS
IFS=$'\n'
for line in $(<${fname}); do
if [[ $line =~ "NOPRIME" ]]; then
continue
fi
# Assume we want this package
package=${line%#*}
inst_pkg=1
# Look for # dist:xxx in comment
if [[ $line =~ (.*)#.*dist:([^ ]*) ]]; then
# We are using BASH regexp matching feature.
package=${BASH_REMATCH[1]}
distros=${BASH_REMATCH[2]}
# In bash ${VAR,,} will lowecase VAR
# Look for a match in the distro list
if [[ ! ${distros,,} =~ ${DISTRO,,} ]]; then
# If no match then skip this package
inst_pkg=0
fi
fi
# Look for # testonly in comment
if [[ $line =~ (.*)#.*testonly.* ]]; then
package=${BASH_REMATCH[1]}
# Are we installing test packages? (test for the default value)
if [[ $INSTALL_TESTONLY_PACKAGES = "False" ]]; then
# If not installing test packages the skip this package
inst_pkg=0
fi
fi
if [[ $inst_pkg = 1 ]]; then
echo $package
fi
done
IFS=$OIFS
done
$xtrace
}
# Distro-agnostic package installer
# install_package package [package ...]
function install_package() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
if is_ubuntu; then
# if there are transient errors pulling the updates, that's fine. It may
# be secondary repositories that we don't really care about.
[[ "$NO_UPDATE_REPOS" = "True" ]] || apt_get update || /bin/true
NO_UPDATE_REPOS=True
$xtrace
apt_get install "$@"
elif is_fedora; then
$xtrace
yum_install "$@"
elif is_suse; then
$xtrace
zypper_install "$@"
else
$xtrace
exit_distro_not_supported "installing packages"
fi
}
# Distro-agnostic function to tell if a package is installed
# is_package_installed package [package ...]
function is_package_installed() {
if [[ -z "$@" ]]; then
return 1
fi
if [[ -z "$os_PACKAGE" ]]; then
GetOSVersion
fi
if [[ "$os_PACKAGE" = "deb" ]]; then
dpkg -s "$@" > /dev/null 2> /dev/null
elif [[ "$os_PACKAGE" = "rpm" ]]; then
rpm --quiet -q "$@"
else
exit_distro_not_supported "finding if a package is installed"
fi
}
# Distro-agnostic package uninstaller
# uninstall_package package [package ...]
function uninstall_package() {
if is_ubuntu; then
apt_get purge "$@"
elif is_fedora; then
sudo yum remove -y "$@"
elif is_suse; then
sudo zypper rm "$@"
else
exit_distro_not_supported "uninstalling packages"
fi
}
# Wrapper for ``yum`` to set proxy environment variables
# Uses globals ``OFFLINE``, ``*_proxy``
# yum_install package [package ...]
function yum_install() {
[[ "$OFFLINE" = "True" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
$sudo http_proxy=$http_proxy https_proxy=$https_proxy \
no_proxy=$no_proxy \
yum install -y "$@"
}
# zypper wrapper to set arguments correctly
# zypper_install package [package ...]
function zypper_install() {
[[ "$OFFLINE" = "True" ]] && return
local sudo="sudo"
[[ "$(id -u)" = "0" ]] && sudo="env"
$sudo http_proxy=$http_proxy https_proxy=$https_proxy \
zypper --non-interactive install --auto-agree-with-licenses "$@"
}
# Process Functions
# =================
# _run_process() is designed to be backgrounded by run_process() to simulate a
# fork. It includes the dirty work of closing extra filehandles and preparing log
# files to produce the same logs as screen_it(). The log filename is derived
# from the service name and global-and-now-misnamed SCREEN_LOGDIR
# _run_process service "command-line"
function _run_process() {
local service=$1
local command="$2"
# Undo logging redirections and close the extra descriptors
exec 1>&3
exec 2>&3
exec 3>&-
exec 6>&-
if [[ -n ${SCREEN_LOGDIR} ]]; then
exec 1>&${SCREEN_LOGDIR}/screen-${1}.${CURRENT_LOG_TIME}.log 2>&1
ln -sf ${SCREEN_LOGDIR}/screen-${1}.${CURRENT_LOG_TIME}.log ${SCREEN_LOGDIR}/screen-${1}.log
# TODO(dtroyer): Hack to get stdout from the Python interpreter for the logs.
export PYTHONUNBUFFERED=1
fi
exec /bin/bash -c "$command"
die "$service exec failure: $command"
}
# Helper to remove the ``*.failure`` files under ``$SERVICE_DIR/$SCREEN_NAME``.
# This is used for ``service_check`` when all the ``screen_it`` are called finished
# init_service_check
function init_service_check() {
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if [[ ! -d "$SERVICE_DIR/$SCREEN_NAME" ]]; then
mkdir -p "$SERVICE_DIR/$SCREEN_NAME"
fi
rm -f "$SERVICE_DIR/$SCREEN_NAME"/*.failure
}
# Find out if a process exists by partial name.
# is_running name
function is_running() {
local name=$1
ps auxw | grep -v grep | grep ${name} > /dev/null
RC=$?
# some times I really hate bash reverse binary logic
return $RC
}
# run_process() launches a child process that closes all file descriptors and
# then exec's the passed in command. This is meant to duplicate the semantics
# of screen_it() without screen. PIDs are written to
# $SERVICE_DIR/$SCREEN_NAME/$service.pid
# run_process service "command-line"
function run_process() {
local service=$1
local command="$2"
# Spawn the child process
_run_process "$service" "$command" &
echo $!
}
# Helper to launch a service in a named screen
# screen_it service "command-line"
function screen_it {
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
USE_SCREEN=$(trueorfalse True $USE_SCREEN)
if is_service_enabled $1; then
# Append the service to the screen rc file
screen_rc "$1" "$2"
if [[ "$USE_SCREEN" = "True" ]]; then
screen -S $SCREEN_NAME -X screen -t $1
if [[ -n ${SCREEN_LOGDIR} ]]; then
screen -S $SCREEN_NAME -p $1 -X logfile ${SCREEN_LOGDIR}/screen-${1}.${CURRENT_LOG_TIME}.log
screen -S $SCREEN_NAME -p $1 -X log on
ln -sf ${SCREEN_LOGDIR}/screen-${1}.${CURRENT_LOG_TIME}.log ${SCREEN_LOGDIR}/screen-${1}.log
fi
# sleep to allow bash to be ready to be send the command - we are
# creating a new window in screen and then sends characters, so if
# bash isn't running by the time we send the command, nothing happens
sleep 1.5
NL=`echo -ne '\015'`
# This fun command does the following:
# - the passed server command is backgrounded
# - the pid of the background process is saved in the usual place
# - the server process is brought back to the foreground
# - if the server process exits prematurely the fg command errors
# and a message is written to stdout and the service failure file
# The pid saved can be used in screen_stop() as a process group
# id to kill off all child processes
screen -S $SCREEN_NAME -p $1 -X stuff "$2 & echo \$! >$SERVICE_DIR/$SCREEN_NAME/$1.pid; fg || echo \"$1 failed to start\" | tee \"$SERVICE_DIR/$SCREEN_NAME/$1.failure\"$NL"
else
# Spawn directly without screen
run_process "$1" "$2" >$SERVICE_DIR/$SCREEN_NAME/$1.pid
fi
fi
}
# Screen rc file builder
# screen_rc service "command-line"
function screen_rc {
SCREEN_NAME=${SCREEN_NAME:-stack}
SCREENRC=$TOP_DIR/$SCREEN_NAME-screenrc
if [[ ! -e $SCREENRC ]]; then
# Name the screen session
echo "sessionname $SCREEN_NAME" > $SCREENRC
# Set a reasonable statusbar
echo "hardstatus alwayslastline '$SCREEN_HARDSTATUS'" >> $SCREENRC
# Some distributions override PROMPT_COMMAND for the screen terminal type - turn that off
echo "setenv PROMPT_COMMAND /bin/true" >> $SCREENRC
echo "screen -t shell bash" >> $SCREENRC
fi
# If this service doesn't already exist in the screenrc file
if ! grep $1 $SCREENRC 2>&1 > /dev/null; then
NL=`echo -ne '\015'`
echo "screen -t $1 bash" >> $SCREENRC
echo "stuff \"$2$NL\"" >> $SCREENRC
if [[ -n ${SCREEN_LOGDIR} ]]; then
echo "logfile ${SCREEN_LOGDIR}/screen-${1}.${CURRENT_LOG_TIME}.log" >>$SCREENRC
echo "log on" >>$SCREENRC
fi
fi
}
# Stop a service in screen
# If a PID is available use it, kill the whole process group via TERM
# If screen is being used kill the screen window; this will catch processes
# that did not leave a PID behind
# screen_stop service
function screen_stop() {
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
USE_SCREEN=$(trueorfalse True $USE_SCREEN)
if is_service_enabled $1; then
# Kill via pid if we have one available
if [[ -r $SERVICE_DIR/$SCREEN_NAME/$1.pid ]]; then
pkill -TERM -P -$(cat $SERVICE_DIR/$SCREEN_NAME/$1.pid)
rm $SERVICE_DIR/$SCREEN_NAME/$1.pid
fi
if [[ "$USE_SCREEN" = "True" ]]; then
# Clean up the screen window
screen -S $SCREEN_NAME -p $1 -X kill
fi
fi
}
# Helper to get the status of each running service
# service_check
function service_check() {
local service
local failures
SCREEN_NAME=${SCREEN_NAME:-stack}
SERVICE_DIR=${SERVICE_DIR:-${DEST}/status}
if [[ ! -d "$SERVICE_DIR/$SCREEN_NAME" ]]; then
echo "No service status directory found"
return
fi
# Check if there is any falure flag file under $SERVICE_DIR/$SCREEN_NAME
failures=`ls "$SERVICE_DIR/$SCREEN_NAME"/*.failure 2>/dev/null`
for service in $failures; do
service=`basename $service`
service=${service%.failure}
echo "Error: Service $service is not running"
done
if [ -n "$failures" ]; then
echo "More details about the above errors can be found with screen, with ./rejoin-stack.sh"
fi
}
# Python Functions
# ================
# Get the path to the pip command.
# get_pip_command
function get_pip_command() {
which pip || which pip-python
if [ $? -ne 0 ]; then
die $LINENO "Unable to find pip; cannot continue"
fi
}
# Get the path to the direcotry where python executables are installed.
# get_python_exec_prefix
function get_python_exec_prefix() {
if is_fedora || is_suse; then
echo "/usr/bin"
else
echo "/usr/local/bin"
fi
}
# Wrapper for ``pip install`` to set cache and proxy environment variables
# Uses globals ``OFFLINE``, ``PIP_DOWNLOAD_CACHE``, ``PIP_USE_MIRRORS``,
# ``TRACK_DEPENDS``, ``*_proxy``
# pip_install package [package ...]
function pip_install {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
if [[ "$OFFLINE" = "True" || -z "$@" ]]; then
$xtrace
return
fi
if [[ -z "$os_PACKAGE" ]]; then
GetOSVersion
fi
if [[ $TRACK_DEPENDS = True ]]; then
source $DEST/.venv/bin/activate
CMD_PIP=$DEST/.venv/bin/pip
SUDO_PIP="env"
else
SUDO_PIP="sudo"
CMD_PIP=$(get_pip_command)
fi
# Mirror option not needed anymore because pypi has CDN available,
# but it's useful in certain circumstances
PIP_USE_MIRRORS=${PIP_USE_MIRRORS:-False}
if [[ "$PIP_USE_MIRRORS" != "False" ]]; then
PIP_MIRROR_OPT="--use-mirrors"
fi
# pip < 1.4 has a bug where it will use an already existing build
# directory unconditionally. Say an earlier component installs
# foo v1.1; pip will have built foo's source in
# /tmp/$USER-pip-build. Even if a later component specifies foo <
# 1.1, the existing extracted build will be used and cause
# confusing errors. By creating unique build directories we avoid
# this problem. See https://github.com/pypa/pip/issues/709
local pip_build_tmp=$(mktemp --tmpdir -d pip-build.XXXXX)
$xtrace
$SUDO_PIP PIP_DOWNLOAD_CACHE=${PIP_DOWNLOAD_CACHE:-/var/cache/pip} \
HTTP_PROXY=$http_proxy \
HTTPS_PROXY=$https_proxy \
NO_PROXY=$no_proxy \
$CMD_PIP install --build=${pip_build_tmp} \
$PIP_MIRROR_OPT $@ \
&& $SUDO_PIP rm -rf ${pip_build_tmp}
}
# Service Functions
# =================
# remove extra commas from the input string (i.e. ``ENABLED_SERVICES``)
# _cleanup_service_list service-list
function _cleanup_service_list () {
echo "$1" | sed -e '
s/,,/,/g;
s/^,//;
s/,$//
'
}
# disable_all_services() removes all current services
# from ``ENABLED_SERVICES`` to reset the configuration
# before a minimal installation
# Uses global ``ENABLED_SERVICES``
# disable_all_services
function disable_all_services() {
ENABLED_SERVICES=""
}
# Remove all services starting with '-'. For example, to install all default
# services except rabbit (rabbit) set in ``localrc``:
# ENABLED_SERVICES+=",-rabbit"
# Uses global ``ENABLED_SERVICES``
# disable_negated_services
function disable_negated_services() {
local tmpsvcs="${ENABLED_SERVICES}"
local service
for service in ${tmpsvcs//,/ }; do
if [[ ${service} == -* ]]; then
tmpsvcs=$(echo ${tmpsvcs}|sed -r "s/(,)?(-)?${service#-}(,)?/,/g")
fi
done
ENABLED_SERVICES=$(_cleanup_service_list "$tmpsvcs")
}
# disable_service() removes the services passed as argument to the
# ``ENABLED_SERVICES`` list, if they are present.
#
# For example:
# disable_service rabbit
#
# This function does not know about the special cases
# for nova, glance, and neutron built into is_service_enabled().
# Uses global ``ENABLED_SERVICES``
# disable_service service [service ...]
function disable_service() {
local tmpsvcs=",${ENABLED_SERVICES},"
local service
for service in $@; do
if is_service_enabled $service; then
tmpsvcs=${tmpsvcs//,$service,/,}
fi
done
ENABLED_SERVICES=$(_cleanup_service_list "$tmpsvcs")
}
# enable_service() adds the services passed as argument to the
# ``ENABLED_SERVICES`` list, if they are not already present.
#
# For example:
# enable_service qpid
#
# This function does not know about the special cases
# for nova, glance, and neutron built into is_service_enabled().
# Uses global ``ENABLED_SERVICES``
# enable_service service [service ...]
function enable_service() {
local tmpsvcs="${ENABLED_SERVICES}"
for service in $@; do
if ! is_service_enabled $service; then
tmpsvcs+=",$service"
fi
done
ENABLED_SERVICES=$(_cleanup_service_list "$tmpsvcs")
disable_negated_services
}
# is_service_enabled() checks if the service(s) specified as arguments are
# enabled by the user in ``ENABLED_SERVICES``.
#
# Multiple services specified as arguments are ``OR``'ed together; the test
# is a short-circuit boolean, i.e it returns on the first match.
#
# There are special cases for some 'catch-all' services::
# **nova** returns true if any service enabled start with **n-**
# **cinder** returns true if any service enabled start with **c-**
# **ceilometer** returns true if any service enabled start with **ceilometer**
# **glance** returns true if any service enabled start with **g-**
# **neutron** returns true if any service enabled start with **q-**
# **swift** returns true if any service enabled start with **s-**
# **trove** returns true if any service enabled start with **tr-**
# For backward compatibility if we have **swift** in ENABLED_SERVICES all the
# **s-** services will be enabled. This will be deprecated in the future.
#
# Cells within nova is enabled if **n-cell** is in ``ENABLED_SERVICES``.
# We also need to make sure to treat **n-cell-region** and **n-cell-child**
# as enabled in this case.
#
# Uses global ``ENABLED_SERVICES``
# is_service_enabled service [service ...]
function is_service_enabled() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local enabled=1
services=$@
for service in ${services}; do
[[ ,${ENABLED_SERVICES}, =~ ,${service}, ]] && enabled=0
# Look for top-level 'enabled' function for this service
if type is_${service}_enabled >/dev/null 2>&1; then
# A function exists for this service, use it
is_${service}_enabled
enabled=$?
fi
# TODO(dtroyer): Remove these legacy special-cases after the is_XXX_enabled()
# are implemented
[[ ${service} == n-cell-* && ${ENABLED_SERVICES} =~ "n-cell" ]] && enabled=0
[[ ${service} == "nova" && ${ENABLED_SERVICES} =~ "n-" ]] && enabled=0
[[ ${service} == "cinder" && ${ENABLED_SERVICES} =~ "c-" ]] && enabled=0
[[ ${service} == "ceilometer" && ${ENABLED_SERVICES} =~ "ceilometer-" ]] && enabled=0
[[ ${service} == "glance" && ${ENABLED_SERVICES} =~ "g-" ]] && enabled=0
[[ ${service} == "ironic" && ${ENABLED_SERVICES} =~ "ir-" ]] && enabled=0
[[ ${service} == "neutron" && ${ENABLED_SERVICES} =~ "q-" ]] && enabled=0
[[ ${service} == "trove" && ${ENABLED_SERVICES} =~ "tr-" ]] && enabled=0
[[ ${service} == "swift" && ${ENABLED_SERVICES} =~ "s-" ]] && enabled=0
[[ ${service} == s-* && ${ENABLED_SERVICES} =~ "swift" ]] && enabled=0
done
$xtrace
return $enabled
}
# Toggle enable/disable_service for services that must run exclusive of each other
# $1 The name of a variable containing a space-separated list of services
# $2 The name of a variable in which to store the enabled service's name
# $3 The name of the service to enable
function use_exclusive_service {
local options=${!1}
local selection=$3
out=$2
[ -z $selection ] || [[ ! "$options" =~ "$selection" ]] && return 1
for opt in $options;do
[[ "$opt" = "$selection" ]] && enable_service $opt || disable_service $opt
done
eval "$out=$selection"
return 0
}
# System Function
# ===============
# Only run the command if the target file (the last arg) is not on an
# NFS filesystem.
function _safe_permission_operation() {
local xtrace=$(set +o | grep xtrace)
set +o xtrace
local args=( $@ )
local last
local sudo_cmd
local dir_to_check
let last="${#args[*]} - 1"
dir_to_check=${args[$last]}
if [ ! -d "$dir_to_check" ]; then
dir_to_check=`dirname "$dir_to_check"`
fi
if is_nfs_directory "$dir_to_check" ; then
$xtrace
return 0
fi
if [[ $TRACK_DEPENDS = True ]]; then
sudo_cmd="env"
else
sudo_cmd="sudo"
fi
$xtrace
$sudo_cmd $@
}
# Exit 0 if address is in network or 1 if address is not in network
# ip-range is in CIDR notation: 1.2.3.4/20
# address_in_net ip-address ip-range
function address_in_net() {
local ip=$1
local range=$2
local masklen=${range#*/}
local network=$(maskip ${range%/*} $(cidr2netmask $masklen))
local subnet=$(maskip $ip $(cidr2netmask $masklen))
[[ $network == $subnet ]]
}
# Add a user to a group.
# add_user_to_group user group
function add_user_to_group() {
local user=$1
local group=$2
if [[ -z "$os_VENDOR" ]]; then
GetOSVersion
fi
# SLE11 and openSUSE 12.2 don't have the usual usermod
if ! is_suse || [[ "$os_VENDOR" = "openSUSE" && "$os_RELEASE" != "12.2" ]]; then
sudo usermod -a -G "$group" "$user"
else
sudo usermod -A "$group" "$user"
fi
}
# Convert CIDR notation to a IPv4 netmask
# cidr2netmask cidr-bits
function cidr2netmask() {
local maskpat="255 255 255 255"
local maskdgt="254 252 248 240 224 192 128"
set -- ${maskpat:0:$(( ($1 / 8) * 4 ))}${maskdgt:$(( (7 - ($1 % 8)) * 4 )):3}
echo ${1-0}.${2-0}.${3-0}.${4-0}
}
# Gracefully cp only if source file/dir exists
# cp_it source destination
function cp_it {
if [ -e $1 ] || [ -d $1 ]; then
cp -pRL $1 $2
fi
}
# HTTP and HTTPS proxy servers are supported via the usual environment variables [1]
# ``http_proxy``, ``https_proxy`` and ``no_proxy``. They can be set in
# ``localrc`` or on the command line if necessary::
#
# [1] http://www.w3.org/Daemon/User/Proxies/ProxyClients.html
#
# http_proxy=http://proxy.example.com:3128/ no_proxy=repo.example.net ./stack.sh
function export_proxy_variables() {
if [[ -n "$http_proxy" ]]; then
export http_proxy=$http_proxy
fi
if [[ -n "$https_proxy" ]]; then
export https_proxy=$https_proxy
fi
if [[ -n "$no_proxy" ]]; then
export no_proxy=$no_proxy
fi
}
# Returns true if the directory is on a filesystem mounted via NFS.
function is_nfs_directory() {
local mount_type=`stat -f -L -c %T $1`
test "$mount_type" == "nfs"
}
# Return the network portion of the given IP address using netmask
# netmask is in the traditional dotted-quad format
# maskip ip-address netmask
function maskip() {
local ip=$1
local mask=$2
local l="${ip%.*}"; local r="${ip#*.}"; local n="${mask%.*}"; local m="${mask#*.}"
local subnet=$((${ip%%.*}&${mask%%.*})).$((${r%%.*}&${m%%.*})).$((${l##*.}&${n##*.})).$((${ip##*.}&${mask##*.}))
echo $subnet
}
# Service wrapper to restart services
# restart_service service-name
function restart_service() {
if is_ubuntu; then
sudo /usr/sbin/service $1 restart
else
sudo /sbin/service $1 restart
fi
}
# Only change permissions of a file or directory if it is not on an
# NFS filesystem.
function safe_chmod() {
_safe_permission_operation chmod $@
}
# Only change ownership of a file or directory if it is not on an NFS
# filesystem.
function safe_chown() {
_safe_permission_operation chown $@
}
# Service wrapper to start services
# start_service service-name
function start_service() {
if is_ubuntu; then
sudo /usr/sbin/service $1 start
else
sudo /sbin/service $1 start
fi
}
# Service wrapper to stop services
# stop_service service-name
function stop_service() {
if is_ubuntu; then
sudo /usr/sbin/service $1 stop
else
sudo /sbin/service $1 stop
fi
}
# Restore xtrace
$XTRACE
# Local variables:
# mode: shell-script
# End:
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