implement elasticsearch pkg for devstack

the first implementation of arbitrary installation in tree for
components for elasticsearch.

Change-Id: I88e852ad009735ae77c6d4c19c4f4838c49cc0ad

pkg/elasticsearch.sh

@@ -0,0 +1,126 @@
+#!/bin/bash -xe
+
+# basic reference point for things like filecache
+#
+# TODO(sdague): once we have a few of these I imagine the download
+# step can probably be factored out to something nicer
+TOP_DIR=$(cd $(dirname "$0")/.. && pwd)
+FILES=$TOP_DIR/files
+source $TOP_DIR/functions
+
+# Package source and version, all pkg files are expected to have
+# something like this, as well as a way to override them.
+ELASTICSEARCH_VERSION=${ELASTICSEARCH_VERSION:-1.4.2}
+ELASTICSEARCH_BASEURL=${ELASTICSEARCH_BASEURL:-https://download.elasticsearch.org/elasticsearch/elasticsearch}
+
+# Elastic search actual implementation
+function wget_elasticsearch {
+    local file=${1}
+
+    if [ ! -f ${FILES}/${file} ]; then
+        wget $ELASTICSEARCH_BASEURL/${file} -O ${FILES}/${file}
+    fi
+
+    if [ ! -f ${FILES}/${file}.sha1.txt ]; then
+        wget $ELASTICSEARCH_BASEURL/${file}.sha1.txt -O ${FILES}/${file}.sha1.txt
+    fi
+
+    pushd ${FILES};  sha1sum ${file} > ${file}.sha1.gen;  popd
+
+    if ! diff ${FILES}/${file}.sha1.gen ${FILES}/${file}.sha1.txt; then
+        echo "Invalid elasticsearch download. Could not install."
+        return 1
+    fi
+    return 0
+}
+
+function download_elasticsearch {
+    if is_ubuntu; then
+        wget_elasticsearch elasticsearch-${ELASTICSEARCH_VERSION}.deb
+    elif is_fedora; then
+        wget_elasticsearch elasticsearch-${ELASTICSEARCH_VERSION}.noarch.rpm
+    fi
+}
+
+function configure_elasticsearch {
+    # currently a no op
+    ::
+}
+
+function start_elasticsearch {
+    if is_ubuntu; then
+        sudo /etc/init.d/elasticsearch start
+    elif is_fedora; then
+        sudo /bin/systemctl start elasticsearch.service
+    else
+        echo "Unsupported architecture...can not start elasticsearch."
+    fi
+}
+
+function stop_elasticsearch {
+    if is_ubuntu; then
+        sudo /etc/init.d/elasticsearch stop
+    elif is_fedora; then
+        sudo /bin/systemctl stop elasticsearch.service
+    else
+        echo "Unsupported architecture...can not stop elasticsearch."
+    fi
+}
+
+function install_elasticsearch {
+    if is_package_installed elasticsearch; then
+        echo "Note: elasticsearch was already installed."
+        return
+    fi
+    if is_ubuntu; then
+        is_package_installed openjdk-7-jre-headless || install_package openjdk-7-jre-headless
+
+        sudo dpkg -i ${FILES}/elasticsearch-${ELASTICSEARCH_VERSION}.deb
+        sudo update-rc.d elasticsearch defaults 95 10
+    elif is_fedora; then
+        is_package_installed java-1.7.0-openjdk-headless || install_package java-1.7.0-openjdk-headless
+        yum_install ${FILES}/elasticsearch-${ELASTICSEARCH_VERSION}.noarch.rpm
+        sudo /bin/systemctl daemon-reload
+        sudo /bin/systemctl enable elasticsearch.service
+    else
+        echo "Unsupported install of elasticsearch on this architecture."
+    fi
+}
+
+function uninstall_elasticsearch {
+    if is_package_installed elasticsearch; then
+        if is_ubuntu; then
+            sudo apt-get purge elasticsearch
+        elif is_fedora; then
+            sudo yum remove elasticsearch
+        else
+            echo "Unsupported install of elasticsearch on this architecture."
+        fi
+    fi
+}
+
+# The PHASE dispatcher. All pkg files are expected to basically cargo
+# cult the case statement.
+PHASE=$1
+echo "Phase is $PHASE"
+
+case $PHASE in
+    download)
+        download_elasticsearch
+        ;;
+    install)
+        install_elasticsearch
+        ;;
+    configure)
+        configure_elasticsearch
+        ;;
+    start)
+        start_elasticsearch
+        ;;
+    stop)
+        stop_elasticsearch
+        ;;
+    uninstall)
+        uninstall_elasticsearch
+        ;;
+esac