[test] Test upgrading from an older version

Adds a test for upgrading from 2.0.0-beta1 to the version of that is built.

Closes #13183

qa/vagrant/pom.xml

@@ -34,6 +34,8 @@
 
       <!-- rpmbuild location : default to /usr/bin/rpmbuild -->
       <packaging.rpm.rpmbuild>/usr/bin/rpmbuild</packaging.rpm.rpmbuild>
+
+      <upgrade.from.version>2.0.0-beta1</upgrade.from.version>
     </properties>
 
     <build>
@@ -92,6 +94,14 @@
                                     <version>${elasticsearch.version}</version>
                                     <type>deb</type>
                                 </artifactItem>
+                                <artifactItem>
+                                    <!-- We also use an old version of elasticsearch for
+                                         testing upgrades -->
+                                    <groupId>org.elasticsearch.distribution.deb</groupId>
+                                    <artifactId>elasticsearch</artifactId>
+                                    <version>${upgrade.from.version}</version>
+                                    <type>deb</type>
+                                </artifactItem>
                                 <artifactItem>
                                     <groupId>org.elasticsearch.plugin</groupId>
                                     <artifactId>jvm-example</artifactId>
@@ -219,6 +229,21 @@
                             </target>
                         </configuration>
                     </execution>
+                    <execution>
+                        <id>setup-version-files</id>
+                        <phase>pre-integration-test</phase>
+                        <goals>
+                            <goal>run</goal>
+                        </goals>
+                        <configuration>
+                            <target>
+                                <echo message="${project.version}"
+                                    file="${project.build.directory}/testroot/version"/>
+                                <echo message="${upgrade.from.version}"
+                                    file="${project.build.directory}/testroot/upgrade_from_version"/>
+                            </target>
+                        </configuration>
+                    </execution>
                     <execution>
                         <id>test-vms</id>
                         <phase>integration-test</phase>
@@ -269,6 +294,14 @@
                                             <version>${elasticsearch.version}</version>
                                             <type>rpm</type>
                                         </artifactItem>
+                                        <artifactItem>
+                                            <!-- We also use an old version of elasticsearch for
+                                                 testing upgrades -->
+                                            <groupId>org.elasticsearch.distribution.rpm</groupId>
+                                            <artifactId>elasticsearch</artifactId>
+                                            <version>${upgrade.from.version}</version>
+                                            <type>rpm</type>
+                                        </artifactItem>
                                     </artifactItems>
                                 </configuration>
                             </execution>
@@ -309,6 +342,14 @@
                                             <version>${elasticsearch.version}</version>
                                             <type>rpm</type>
                                         </artifactItem>
+                                        <artifactItem>
+                                            <!-- We also use an old version of elasticsearch for
+                                                 testing upgrades -->
+                                            <groupId>org.elasticsearch.distribution.rpm</groupId>
+                                            <artifactId>elasticsearch</artifactId>
+                                            <version>${upgrade.from.version}</version>
+                                            <type>rpm</type>
+                                        </artifactItem>
                                     </artifactItems>
                                 </configuration>
                             </execution>

qa/vagrant/src/test/resources/packaging/scripts/30_deb_package.bats

@@ -46,7 +46,7 @@ setup() {
 }
 
 @test "[DEB] package is available" {
-    count=$(find . -type f -name 'elastic*.deb' | wc -l)
+    count=$(ls elasticsearch-$(cat version).deb | wc -l)
     [ "$count" -eq 1 ]
 }
 
@@ -56,7 +56,7 @@ setup() {
 }
 
 @test "[DEB] install package" {
-    dpkg -i elasticsearch*.deb
+    dpkg -i elasticsearch-$(cat version).deb
 }
 
 @test "[DEB] package is installed" {

qa/vagrant/src/test/resources/packaging/scripts/40_rpm_package.bats

@@ -45,7 +45,7 @@ setup() {
 }
 
 @test "[RPM] package is available" {
-    count=$(find . -type f -name 'elastic*.rpm' | wc -l)
+    count=$(ls elasticsearch-$(cat version).rpm | wc -l)
     [ "$count" -eq 1 ]
 }
 
@@ -55,7 +55,7 @@ setup() {
 }
 
 @test "[RPM] install package" {
-    rpm -i elasticsearch*.rpm
+    rpm -i elasticsearch-$(cat version).rpm
 }
 
 @test "[RPM] package is installed" {

qa/vagrant/src/test/resources/packaging/scripts/80_upgrade.bats

@@ -0,0 +1,105 @@
+#!/usr/bin/env bats
+
+# Tests upgrading elasticsearch from a previous version with the deb or rpm
+# packages. Just uses a single node cluster on the current machine rather than
+# fancy rolling restarts.
+
+# WARNING: This testing file must be executed as root and can
+# dramatically change your system. It removes the 'elasticsearch'
+# user/group and also many directories. Do not execute this file
+# unless you know exactly what you are doing.
+
+# The test case can be executed with the Bash Automated
+# Testing System tool available at https://github.com/sstephenson/bats
+# Thanks to Sam Stephenson!
+
+# Licensed to Elasticsearch under one or more contributor
+# license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright
+# ownership. Elasticsearch licenses this file to you 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.
+
+# Load test utilities
+load packaging_test_utils
+
+# Cleans everything for the 1st execution
+setup() {
+    skip_not_dpkg_or_rpm
+}
+
+@test "[UPGRADE] install old version" {
+    clean_before_test
+    install_package -v $(cat upgrade_from_version)
+}
+
+@test "[UPGRADE] start old version" {
+    start_elasticsearch_service
+}
+
+@test "[UPGRADE] check elasticsearch version is old version" {
+    curl -s localhost:9200 | grep \"number\"\ :\ \"$(cat upgrade_from_version)\" || {
+        echo "Installed an unexpected version:"
+        curl localhost:9200
+        false
+    }
+}
+
+@test "[UPGRADE] index some documents into a few indexes" {
+    curl -s -XPOST localhost:9200/library/book/1?pretty -d '{
+      "title": "Elasticsearch - The Definitive Guide"
+    }'
+    curl -s -XPOST localhost:9200/library/book/2?pretty -d '{
+      "title": "Brave New World"
+    }'
+    curl -s -XPOST localhost:9200/library2/book/1?pretty -d '{
+      "title": "The Left Hand of Darkness"
+    }'
+}
+
+@test "[UPGRADE] verify that the documents are there" {
+    curl -s localhost:9200/library/book/1?pretty | grep Elasticsearch
+    curl -s localhost:9200/library/book/2?pretty | grep World
+    curl -s localhost:9200/library2/book/1?pretty | grep Darkness
+}
+
+@test "[UPGRADE] stop old version" {
+    stop_elasticsearch_service
+}
+
+@test "[UPGRADE] install version under test" {
+    install_package -u
+}
+
+@test "[UPGRADE] start version under test" {
+    start_elasticsearch_service yellow
+}
+
+@test "[UPGRADE] check elasticsearch version is version under test" {
+    local versionToCheck=$(cat version | sed -e 's/-SNAPSHOT//')
+    curl -s localhost:9200 | grep \"number\"\ :\ \"$versionToCheck\" || {
+        echo "Installed an unexpected version:"
+        curl -s localhost:9200
+        false
+    }
+}
+
+@test "[UPGRADE] verify that the documents are there after restart" {
+    curl -s localhost:9200/library/book/1?pretty | grep Elasticsearch
+    curl -s localhost:9200/library/book/2?pretty | grep World
+    curl -s localhost:9200/library2/book/1?pretty | grep Darkness
+}
+
+@test "[UPGRADE] stop version under test" {
+    stop_elasticsearch_service
+}

qa/vagrant/src/test/resources/packaging/scripts/packaging_test_utils.bash

@@ -234,10 +234,25 @@ verify_package_installation() {
 
 # Install the rpm or deb package
 install_package() {
+    local version=$(cat version)
+    local rpmCommand='-i'
+    while getopts ":uv:" opt; do
+        case $opt in
+            u)
+                rpmCommand='-U'
+                ;;
+            v)
+                version=$OPTARG
+                ;;
+            \?)
+                echo "Invalid option: -$OPTARG" >&2
+                ;;
+        esac
+    done
     if is_rpm; then
-        rpm -i elasticsearch*.rpm
+        rpm $rpmCommand elasticsearch-$version.rpm
     elif is_dpkg; then
-        dpkg -i elasticsearch*.deb
+        dpkg -i elasticsearch-$version.deb
     else
         skip "Only rpm or deb supported"
     fi
@@ -318,6 +333,8 @@ clean_before_test() {
 }
 
 start_elasticsearch_service() {
+    local desiredStatus=${1:-green}
+
     if [ -f "/tmp/elasticsearch/bin/elasticsearch" ]; then
         # su and the Elasticsearch init script work together to break bats.
         # sudo isolates bats enough from the init script so everything continues
@@ -342,7 +359,7 @@ start_elasticsearch_service() {
         [ "$status" -eq 0 ]
     fi
 
-    wait_for_elasticsearch_status
+    wait_for_elasticsearch_status $desiredStatus
 
     if [ -r "/tmp/elasticsearch/elasticsearch.pid" ]; then
         pid=$(cat /tmp/elasticsearch/elasticsearch.pid)
@@ -389,10 +406,7 @@ stop_elasticsearch_service() {
 
 # Waits for Elasticsearch to reach a given status (defaults to "green")
 wait_for_elasticsearch_status() {
-    local desired_status="green"
+    local desiredStatus=${1:-green}
-    if [ "x$1" != "x" ]; then
-        status="$1"
-    fi
 
     echo "Making sure elasticsearch is up..."
     wget -O - --retry-connrefused --waitretry=1 --timeout=60 http://localhost:9200 || {
@@ -411,7 +425,7 @@ wait_for_elasticsearch_status() {
     }
 
     echo "Tring to connect to elasticsearch and wait for expected status..."
-    curl -sS "http://localhost:9200/_cluster/health?wait_for_status=$desired_status&timeout=60s&pretty"
+    curl -sS "http://localhost:9200/_cluster/health?wait_for_status=$desiredStatus&timeout=60s&pretty"
     if [ $? -eq 0 ]; then
         echo "Connected"
     else
@@ -426,8 +440,8 @@ wait_for_elasticsearch_status() {
         echo $output
         false
     fi
-    echo $output | grep $desired_status || {
+    echo $output | grep $desiredStatus || {
-        echo "unexpected status:  '$output' wanted '$desired_status'"
+        echo "unexpected status:  '$output' wanted '$desiredStatus'"
         false
     }
 }