Bug 445128 - Enable the use of p2 mirrors for CDT releases

Note that <repo-path> will need to be changed at release time to point
to the release location, which will probably be "tools/cdt/releases/8.6"

Change-Id: I0a89c8807a435ac348f4f28f2442d27668248cfc
Reviewed-on: https://git.eclipse.org/r/33992
Tested-by: Hudson CI
Reviewed-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Tested-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-by: Marc Khouzam <marc.khouzam@ericsson.com>
Tested-by: Marc Khouzam <marc.khouzam@ericsson.com>

4 files changed, 110 insertions, 18 deletions

diff --git a/pom.xml b/pom.xml
index 28972cd05b3..36960480031 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,6 +19,7 @@
 		<tycho-extras-version>0.22.0</tycho-extras-version>
 		<sonar.core.codeCoveragePlugin>jacoco</sonar.core.codeCoveragePlugin>
 		<cdt-site>http://hudson.eclipse.org/cdt/job/cdt-master/lastSuccessfulBuild/artifact/releng/org.eclipse.cdt.repo/target/repository</cdt-site>
+		<repo-path>tools/cdt/builds/master/nightly</repo-path>
 		<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
 		<sonar.jacoco.reportPath>${project.basedir}/../../target/jacoco.exec</sonar.jacoco.reportPath>
 		<target-platform>cdt-e4.4</target-platform>
diff --git a/releng/org.eclipse.cdt.repo/antArtifactsUpdater.xml b/releng/org.eclipse.cdt.repo/antArtifactsUpdater.xml
new file mode 100644
index 00000000000..0f274224e71
--- /dev/null
+++ b/releng/org.eclipse.cdt.repo/antArtifactsUpdater.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+       Copyright (c) 2011 Obeo.
+  All rights reserved. This program and the accompanying materials
+  are made available under the terms of the Eclipse Public License v1.0
+  which accompanies this distribution, and is available at
+  http://www.eclipse.org/legal/epl-v10.html
+
+  Contributors:
+      Obeo - initial API and implementation
+      Marc Khouzam (Ericsson) - Copied from Linux Tools and adapted for CDT
+-->
+<project name="antArtifactsUpdater" default="main">
+	<!--
+        This script is used to mofidy the artifacts.jar file to enable p2 mirroring and statistics.
+        It also adds the p2.index file.
+
+	Be sure to use at least ant 1.8.2 to launch this script.
+
+	Ant 1.8.2 is located here : /shared/common/apache-ant-1.8.2/
+	on build.eclipse.org, do a
+	$> export ANT_HOME=/shared/common/apache-ant-1.8.2/
+	-->
+
+	<property name="build.root" value="${project.build.directory}/repository" />
+	<antversion property="antversion" />
+
+	<target name="main">
+		<!-- adding p2.mirrorsURL and p2.statsURI to the repository -->
+		<unzip dest="${build.root}">
+			<fileset file="${build.root}/artifacts.jar" />
+		</unzip>
+ 		<!-- Delete the archive, it will be re-generated -->
+ 		<delete file="${build.root}/artifacts.jar" />
+		<move file="${build.root}/artifacts.xml" tofile="${build.root}/artifacts.original.xml" />
+		<xslt style="p2.xsl" in="${build.root}/artifacts.original.xml" out="${build.root}/artifacts.xml">
+			<param name="mirrorsURL" expression="http://www.eclipse.org/downloads/download.php?file=/${repo-path}&amp;format=xml" />
+		</xslt>
+		<zip destfile="${build.root}/artifacts.jar" basedir="${build.root}" includes="artifacts.xml" />
+ 		<delete file="${build.root}/artifacts.xml" />
+ 		<delete file="${build.root}/artifacts.original.xml" />
+
+		<!-- adding p2.index -->
+		<echo file="${build.root}/p2.index" message="version = 1${line.separator}metadata.repository.factory.order = content.xml,\!${line.separator}artifact.repository.factory.order = artifacts.xml,\!" />
+	</target>
+</project>
diff --git a/releng/org.eclipse.cdt.repo/p2.xsl b/releng/org.eclipse.cdt.repo/p2.xsl
new file mode 100644
index 00000000000..8c804d3b7eb
--- /dev/null
+++ b/releng/org.eclipse.cdt.repo/p2.xsl
@@ -0,0 +1,35 @@
+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+	<xsl:output method="xml" indent="yes"/>
+
+	<xsl:param name="mirrorsURL"/>
+
+	<!-- add p2.mirrorsURL and p2.statsURI properties -->
+	<xsl:template match="repository/properties">
+		<properties size='{@size+2}'>
+			<xsl:copy-of select="property"/>
+			<property name='p2.statsURI' value='http://download.eclipse.org/stats'/>
+			<xsl:element name="property">
+				<xsl:attribute name="name">p2.mirrorsURL</xsl:attribute>
+				<xsl:attribute name="value"><xsl:value-of select="$mirrorsURL"/></xsl:attribute>
+			</xsl:element>
+		</properties>
+	</xsl:template>
+
+	<!-- add p2.mirrorsURL property -->
+	<xsl:template match="repository/artifacts/artifact/properties[../@classifier='org.eclipse.update.feature']">
+		<properties size='{@size+1}'>
+			<xsl:copy-of select="property"/>
+			<property name='download.stats' value='{../@id}-{../@version}'/>
+		</properties>
+	</xsl:template>
+
+	<!-- copy everything else -->
+	<xsl:template match="* | @*">
+		<xsl:copy>
+			<xsl:copy-of select="@*"/>
+			<xsl:apply-templates/>
+		</xsl:copy>
+	</xsl:template>
+
+</xsl:stylesheet>
diff --git a/releng/org.eclipse.cdt.repo/pom.xml b/releng/org.eclipse.cdt.repo/pom.xml
index 93cb82f9016..ea4067b1600 100644
--- a/releng/org.eclipse.cdt.repo/pom.xml
+++ b/releng/org.eclipse.cdt.repo/pom.xml
@@ -23,28 +23,38 @@
 		<profile>
 			<id>production</id>
 			<properties>
-			    <cdt-download-dir>/home/data/httpd/download.eclipse.org/tools/cdt/builds/master/nightly</cdt-download-dir>
+				<cdt-download-dir>/home/data/httpd/download.eclipse.org/${repo-path}</cdt-download-dir>
 			</properties>
 			<build>
 				<plugins>
 					<plugin>
-					    <artifactId>maven-antrun-plugin</artifactId>
-					    <version>1.7</version>
-					    <executions>
-					        <execution>
-					            <phase>verify</phase>
-					            <configuration>
-					                <target>
-					                    <delete dir="${cdt-download-dir}"/>
-					                    <unzip src="target/org.eclipse.cdt.repo.zip"
-					                        dest="${cdt-download-dir}"/>
-					                </target>
-					            </configuration>
-					            <goals>
-					                <goal>run</goal>
-					            </goals>
-					        </execution>
-					    </executions>
+						<artifactId>maven-antrun-plugin</artifactId>
+						<version>1.7</version>
+						<executions>
+							<execution>
+								<phase>verify</phase>
+								<configuration>
+									<target>
+										<!-- first modify the artifacts.jar file -->
+										<!-- note that our zip file is already generated and won't have nor needs this change -->
+										<copy file="p2.xsl" todir="${project.build.directory}"/>
+										<copy file="antArtifactsUpdater.xml" todir="${project.build.directory}"/>
+										<ant antfile="${project.build.directory}/antArtifactsUpdater.xml"/>
+
+										<!-- now promote the update build to our download area -->
+									 	<delete dir="${cdt-download-dir}"/>
+										<copy includeemptydirs="false" todir="${cdt-download-dir}">
+											<fileset dir="target/repository">
+												<include name="**" />
+											</fileset>
+										</copy>
+									</target>
+								</configuration>
+								<goals>
+									<goal>run</goal>
+								</goals>
+							</execution>
+						</executions>
 					</plugin>
 				</plugins>
 			</build>