Update set of scripts for mongodb and nodejs

This set of scripts is used in the first 2 nodes for the monitoring
use case.  They install mongodb and nodejs, configure and start them.
The config script for nodejs is designed for the paypal nodejs app:
https://github.com/paypal/rest-api-sample-app-nodejs.git
It configures the link to the mongodb database for the app.
The scripts have been validated by deploying to 2 VM's using Heat
templates.

Implements: blueprint translate-tosca-monitoring-usecase
Change-Id: I08d20ed40bbe23a2193ba1892d6d23b4bd7804f6

translator/toscalib/tests/artifacts/mongodb/config.sh

@@ -1,2 +1,7 @@
-#!/bin/bash
-stop mongodb
+#!/bin/sh -x
+# Edit the file /etc/mongodb.conf, update with real IP of Mongo server
+# This script configures the mongodb server to export its service on
+# the server IP
+# bind_ip = 127.0.0.1     -> bind_ip = <IP for Mongo server>
+# The environment variable mongodb_ip is expected to be set up
+sed -i "s/127.0.0.1/$mongodb_ip/" /etc/mongodb.conf

translator/toscalib/tests/artifacts/mongodb/create.sh

@@ -1,2 +1,4 @@
-#!/bin/bash
+#!/bin/sh -x
+# This script installs mongodb
+apt-get update
 apt-get install -y mongodb

translator/toscalib/tests/artifacts/mongodb/start.sh

@@ -1,2 +1,3 @@
-#!/bin/bash
-start mongodb
+#!/bin/sh -x
+# This script starts mongodb
+restart mongodb

translator/toscalib/tests/artifacts/nodejs/config.sh

@@ -1,24 +1,28 @@
-#!/bin/bash
+#!/bin/sh -x
+# This script installs an app for nodejs: the app intended is the paypal app
+# and it is configured to connect to the mongodb server
+# The environment variables github_url and mongodb_ip are expected to be set up
 export app_dir=/opt/app
 git clone $github_url /opt/app
-if [ -f /opt/app/package.json ]
-  cd  /opt/app/ && npm install
+if [ -f /opt/app/package.json ]; then
+   cd  /opt/app/ && npm install
+   sed -i "s/localhost/$mongodb_ip/" config.json
 fi
 
 cat > /etc/init/nodeapp.conf <<EOS
 description "node.js app"
-
+ 
 start on (net-device-up
-and local-filesystems
-and runlevel [2345])
+          and local-filesystems
+          and runlevel [2345])
 stop on runlevel [!2345]
-
+ 
 expect fork
 respawn
-
+ 
 script
-export HOME=/
-export NODE_PATH=/usr/lib/node
-exec /usr/bin/node ${app_dir}/server.js >> /var/log/nodeapp.log 2>&1 &
+  export HOME=/
+  export NODE_PATH=/usr/lib/node
+  exec /usr/bin/node ${app_dir}/app.js >> /var/log/nodeapp.log 2>&1 &
 end script
 EOS

translator/toscalib/tests/artifacts/nodejs/create.sh

@@ -1,4 +1,5 @@
-#!/bin/bash
-add-apt-repository ppa: chris-lea/node.js
+#!/bin/sh -x
+# This script installs nodejs and the prereq
+add-apt-repository ppa:chris-lea/node.js
 apt-get update
-apt-get install -y nodejs build-essential curl git npm
+apt-get install -y nodejs build-essential

translator/toscalib/tests/artifacts/nodejs/pre_configure_source.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-cat > /opt/node/config.js<<EOF
-{
-  "host": "${host}"
-  , "port": ${port}
-}
-EOF

translator/toscalib/tests/artifacts/nodejs/start.sh

@@ -1,2 +1,3 @@
-#!/bin/bash
-start nodeapp
+#!/bin/sh -x
+# This script starts the nodejs application
+start nodeapp