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= Deploy Gerrit Artifacts
[[deploy-configuration-setting-maven-central]]
== Deploy Configuration settings for Maven Central
Some Gerrit artifacts (e.g. the Gerrit WAR file, the Gerrit Plugin API
and the Gerrit Extension API) are published on Maven Central in the
`com.google.gerrit` repository.
To be able to publish artifacts to Maven Central some preparations must
be done:
* Create an account on
link:https://issues.sonatype.org/secure/Signup!default.jspa[Sonatype's Jira,role=external,window=_blank].
+
Sonatype is the company that runs Maven Central and you need a Sonatype
account to be able to upload artifacts to Maven Central.
* Configure your Sonatype user and password in `~/.m2/settings.xml`:
+
----
<server>
<id>sonatype-nexus-staging</id>
<username>USER</username>
<password>PASSWORD</password>
</server>
----
* Request permissions to upload artifacts to the `com.google.gerrit`
repository on Maven Central:
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Ask for this permission by adding a comment on the
link:https://issues.sonatype.org/browse/OSSRH-7392[OSSRH-7392,role=external,window=_blank] Jira
ticket at Sonatype.
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The request needs to be approved by someone who already has this
permission by commenting on the same issue.
* Generate and publish a PGP key
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A PGP key is needed to be able to sign the release artifacts before
the upload to Maven Central, and to sign the release announcement email.
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Generate and publish a PGP key as described in
link:http://central.sonatype.org/pages/working-with-pgp-signatures.html[
Working with PGP Signatures,role=external,window=_blank].
+
Please be aware that after publishing your public key it may take a
while until it is visible to the Sonatype server.
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Add an entry for the public key in the
link:https://gerrit.googlesource.com/homepage/+/master/pages/site/releases/public-keys.md[key list,role=external,window=_blank]
on the homepage.
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The PGP passphrase can be put in `~/.m2/settings.xml`:
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----
<settings>
<profiles>
<profile>
<id>gpg</id>
<properties>
<gpg.executable>gpg2</gpg.executable>
<gpg.passphrase>mypassphrase</gpg.passphrase>
</properties>
</profile>
</profiles>
<activeProfiles>
<activeProfile>gpg</activeProfile>
</activeProfiles>
</settings>
----
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It can also be included in the key chain on OS X.
[[deploy-configuration-settings-xml]]
== Deploy Configuration in Maven `settings.xml`
Gerrit Subproject Artifacts are stored on
link:https://developers.google.com/storage/[Google Cloud Storage].
Via the link:https://console.developers.google.com/project/164060093628[Developers Console,role=external,window=_blank] the
Gerrit maintainers have access to the `Gerrit Code Review` project.
This projects host several buckets for storing Gerrit artifacts:
* `gerrit-api`:
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Bucket to store the Gerrit Extension API Jar and the Gerrit Plugin API
Jar.
* `gerrit-maven`:
+
Bucket to store Gerrit Subproject Artifacts (e.g. Prolog Cafe).
To upload artifacts to a bucket the user must authenticate with a
username and password. The username and password need to be retrieved
from the link:https://console.cloud.google.com/storage/settings?project=api-project-164060093628[
Storage Setting in the Google Cloud Platform Console,role=external,window=_blank]:
Select the `Interoperability` tab, and if no keys are listed under
`Interoperable storage access keys`, select 'Create a new key'.
Using `Access Key` as username and `Secret` as the password, add the
configuration in the `~/.m2/settings.xml` file to make the credentials
known to Maven:
----
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
<servers>
<server>
<id>gerrit-api-repository</id>
<username>GOOG..EXAMPLE.....EXAMPLE</username>
<password>EXAMPLE..EXAMPLE..EXAMPLE</password>
</server>
<server>
<id>gerrit-maven-repository</id>
<username>GOOG..EXAMPLE.....EXAMPLE</username>
<password>EXAMPLE..EXAMPLE..EXAMPLE</password>
</server>
<server>
<id>gerrit-plugins-repository</id>
<username>GOOG..EXAMPLE.....EXAMPLE</username>
<password>EXAMPLE..EXAMPLE..EXAMPLE</password>
</server>
</servers>
</settings>
----
[[deploy-configuration-subprojects]]
=== Gerrit Subprojects
* You will need to have the following in the `pom.xml` to make it
deployable to the `gerrit-maven` storage bucket:
----
<distributionManagement>
<repository>
<id>gerrit-maven-repository</id>
<name>Gerrit Maven Repository</name>
<url>gs://gerrit-maven</url>
<uniqueVersion>true</uniqueVersion>
</repository>
</distributionManagement>
----
[NOTE]
In case of JGit the `pom.xml` already contains a `distributionManagement`
section. To deploy the artifacts to the `gerrit-maven` repository, replace
the existing `distributionManagement` section with this snippet.
* Add these two snippets to the `pom.xml` to enable the wagon provider:
----
<pluginRepositories>
<pluginRepository>
<id>gerrit-maven</id>
<url>https://gerrit-maven.commondatastorage.googleapis.com</url>
</pluginRepository>
</pluginRepositories>
----
----
<build>
<extensions>
<extension>
<groupId>com.googlesource.gerrit</groupId>
<artifactId>gs-maven-wagon</artifactId>
<version>3.3</version>
</extension>
</extensions>
</build>
----
GERRIT
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