Implement second part of dynamic DMaaP config

VESCollector app can now fetch CBS configuration and
rebuilt the part regarding sending events dynamically,
without restarting application.
Application will still be restarted by a .sh script,
if there were changes regarding collector.properties file.
The decision of whether dynamic configuration should be
triggered is now based on existence of env vars
CONSUL_HOST, CONFIG_BINDING_SERVICE, HOSTNAME,
not as previously on CBSPOLLTIME.
Frequency at which the config check should happen is
now exposed via property from collector.properties

Change-Id: I98ff160fa51d08d84a23c716d90ceaacbe17ada6
Signed-off-by: PawelSzalapski <pawel.szalapski@nokia.com>
Issue-ID: DCAEGEN2-519

1 files changed, 86 insertions, 0 deletions

diff --git a/src/main/scripts/appController.sh b/src/main/scripts/appController.sh
new file mode 100644
index 00000000..d141addf
--- /dev/null
+++ b/src/main/scripts/appController.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+###
+# ============LICENSE_START=======================================================
+# PROJECT
+# ================================================================================
+# Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+# Copyright (C) 2018 Nokia Networks Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+###
+source bin/logger.sh
+
+updateKeystore() {
+    log "Updating keystore configuration"
+    aliasParameterName="collector.keystore.alias"
+    originalPropertyFile="etc/collector.properties"
+    temporaryPropertyFile="etc/collector.properties.tmp"
+    keystorePath=`grep collector.keystore.file.location ${originalPropertyFile} | tr -d '[:space:]' | cut -d"=" -f2`
+    keystorePasswordFile=`grep collector.keystore.passwordfile ${originalPropertyFile} | tr -d '[:space:]' | cut -d"=" -f2`
+    temporaryAlias=`/usr/bin/keytool -list -keystore $keystorePath < $keystorePasswordFile | grep "PrivateKeyEntry" | cut -d"," -f1`
+    newAlias=`echo $temporaryAlias | cut -d":" -f2`
+    sed "s~$aliasParameterName=.*~$aliasParameterName=$newAlias~g" ${originalPropertyFile} > ${temporaryPropertyFile}
+    echo `cat ${temporaryPropertyFile} > ${originalPropertyFile}`
+    rm ${temporaryPropertyFile}
+    log "Keystore configuration updated"
+}
+
+tryToPollConfiguration() {
+    log "Trying to poll configuration from CBS before application starts"
+    ${JAVA_HOME}/bin/java -cp "etc:lib/*" org.onap.dcae.controller.PreAppStartupConfigUpdater
+}
+
+start() {
+    log "Starting application"
+    appPids=`pidof java`
+
+    if [ ! -z ${appPids} ]; then
+        logWarn "Tried to start an application, but it is already running on PID(s): ${appPids}. Startup aborted."
+        exit 1
+    fi
+
+    ${JAVA_HOME}/bin/java -cp "etc:lib/*" \
+      -Xms256m -Xmx512m \
+      -XX:ErrorFile=logs/java_error%p.log \
+      -XX:+HeapDumpOnOutOfMemoryError \
+      -Dhttps.protocols=TLSv1.1,TLSv1.2 \
+      org.onap.dcae.VesApplication $* & &>> logs/collector.log
+}
+
+stop() {
+    log "Stopping application"
+    appPids=`pidof java`
+
+    if [ ! -z ${appPids} ]; then
+        echo "Killing java PID(s): ${appPids}"
+        kill -9 ${appPids}
+        sleep 5
+        if [ ! $(pidof java) ]; then
+            log "Application stopped"
+        else
+            logWarn "Application did not stop after 5 seconds"
+        fi
+    else
+        logWarn "Tried to stop an application, but it was not running";
+    fi
+}
+
+case $1 in
+  "start")    tryToPollConfiguration; updateKeystore; start ;;
+  "stop")     stop ;;
+  "restart")  stop; start ;;
+  *)          echo "Bad usage. Should be: /bin/bash <this> start/stop"
+esac
+