From 102967af2d252c7dc6030bca4da57e5428325e7b Mon Sep 17 00:00:00 2001
From: Anusha Ramineni <anusha.ramineni@nectechnologies.in>
Date: Tue, 20 Sep 2016 15:51:49 +0530
Subject: [PATCH] Default to single process in devstack

This commit defaults to starting single congress process through
devstack and defaults kombu+memory as messaging driver .

TODO(ramineni): Gate jobs to run on multi process and rabbit driver

Change-Id: I0951b6d9693a24faca68e4daedf13f253e965404
Partial-Bug:#1624172
(cherry picked from commit f40fd1b16fb0f71aeeb61bf64020d2b134c2b6b9)
---
 devstack/plugin.sh | 18 ++++++++++++------
 devstack/settings  |  4 ++++
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index f8beb7949..54bf2d72f 100755
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -57,9 +57,10 @@ function configure_congress {
     iniset $CONGRESS_CONF oslo_policy policy_file $CONGRESS_POLICY_FILE
     iniset $CONGRESS_CONF DEFAULT auth_strategy $CONGRESS_AUTH_STRATEGY
     iniset $CONGRESS_CONF DEFAULT datasource_sync_period 30
-    # Set RabbitMQ credentials
-    iniset $CONGRESS_CONF oslo_messaging_rabbit rabbit_userid $RABBIT_USERID
-    iniset $CONGRESS_CONF oslo_messaging_rabbit rabbit_password $RABBIT_PASSWORD
+
+    # if [ "$CONGRESS_MULTIPROCESS_DEPLOYMENT" == "False" ]; then
+    #    iniset $CONGRESS_CONF DEFAULT transport_url $CONGRESS_TRANSPORT_URL
+    # fi
 
     CONGRESS_DRIVERS="congress.datasources.neutronv2_driver.NeutronV2Driver,"
     CONGRESS_DRIVERS+="congress.datasources.glancev2_driver.GlanceV2Driver,"
@@ -180,9 +181,14 @@ function start_congress_service_and_check {
     # Start the congress services in seperate processes
     echo_summary "Installing congress services"
 
-    run_process congress-api "python $CONGRESS_BIN_DIR/congress-server --api --node-id=apinode $CFG_FILE_OPTIONS"
-    run_process congress-engine "python $CONGRESS_BIN_DIR/congress-server --policy-engine --node-id=enginenode $CFG_FILE_OPTIONS"
-    run_process congress-datasources "python $CONGRESS_BIN_DIR/congress-server --datasources --node-id=datanode $CFG_FILE_OPTIONS"
+    if [ "$CONGRESS_MULTIPROCESS_DEPLOYMENT" == "False" ]; then
+        echo "Installing congress as single process"
+        run_process congress "python $CONGRESS_BIN_DIR/congress-server --node-id=allinonenode $CFG_FILE_OPTIONS"
+    else
+        run_process congress-api "python $CONGRESS_BIN_DIR/congress-server --api --node-id=apinode $CFG_FILE_OPTIONS"
+        run_process congress-engine "python $CONGRESS_BIN_DIR/congress-server --policy-engine --node-id=enginenode $CFG_FILE_OPTIONS"
+        run_process congress-datasources "python $CONGRESS_BIN_DIR/congress-server --datasources --node-id=datanode $CFG_FILE_OPTIONS"
+    fi
 
     # Start multiple PE's
     if [ "$CONGRESS_REPLICATED" == "True" ]; then
diff --git a/devstack/settings b/devstack/settings
index 7e1158f67..8814803f8 100644
--- a/devstack/settings
+++ b/devstack/settings
@@ -32,6 +32,10 @@ CONGRESS_AUTH_STRATEGY=${CONGRESS_AUTH_STRATEGY:-keystone}
 CONGRESS_DB_NAME=${CONGRESS_DB_NAME:-congress}
 # To run congress in HA mode
 CONGRESS_REPLICATED=${CONGRESS_REPLICATED:-False}
+# Default messaging driver
+CONGRESS_TRANSPORT_URL=${CONGRESS_TRANSPORT_URL:-kombu+memory:////}
+# Mutli process deployment
+CONGRESS_MULTIPROCESS_DEPLOYMENT=${CONGRESS_MULTIPROCESS_DEPLOYMENT:-False}
 
 # Setup default directories for client
 #-------------------------------------