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# How to deploy Maven projects to Artifactory with GitLab CI/CD This document was moved to [another location](../../ci/examples/artifactory_and_gitlab/index.md)
> **Article [Type](../../development/writing_documentation.md#types-of-technical-articles):** tutorial ||
> **Level:** intermediary ||
> **Author:** [Fabio Busatto](https://gitlab.com/bikebilly) ||
> **Publication date:** 2017-08-15
## Introduction
In this article, we will show how you can leverage the power of [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/)
to build a [Maven](https://maven.apache.org/) project, deploy it to [Artifactory](https://www.jfrog.com/artifactory/), and then use it from another Maven application as a dependency.
You'll create two different projects:
- `simple-maven-dep`: the app built and deployed to Artifactory (available at https://gitlab.com/gitlab-examples/maven/simple-maven-dep)
- `simple-maven-app`: the app using the previous one as a dependency (available at https://gitlab.com/gitlab-examples/maven/simple-maven-app)
We assume that you already have a GitLab account on [GitLab.com](https://gitlab.com/), and that you know the basic usage of Git and [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/).
We also assume that an Artifactory instance is available and reachable from the internet, and that you have valid credentials to deploy on it.
## Create the simple Maven dependency
First of all, you need an application to work with: in this specific case we will
use a simple one, but it could be any Maven application. This will be the
dependency you want to package and deploy to Artifactory, in order to be
available to other projects.
### Prepare the dependency application
For this article you'll use a Maven app that can be cloned from our example
project:
1. Log in to your GitLab account
1. Create a new project by selecting **Import project from ➔ Repo by URL**
1. Add the following URL:
```
https://gitlab.com/gitlab-examples/maven/simple-maven-dep.git
```
1. Click **Create project**
This application is nothing more than a basic class with a stub for a JUnit based test suite.
It exposes a method called `hello` that accepts a string as input, and prints a hello message on the screen.
The project structure is really simple, and you should consider these two resources:
- `pom.xml`: project object model (POM) configuration file
- `src/main/java/com/example/dep/Dep.java`: source of our application
### Configure the Artifactory deployment
The application is ready to use, but you need some additional steps to deploy it to Artifactory:
1. Log in to Artifactory with your user's credentials.
1. From the main screen, click on the `libs-release-local` item in the **Set Me Up** panel.
1. Copy to clipboard the configuration snippet under the **Deploy** paragraph.
1. Change the `url` value in order to have it configurable via secret variables.
1. Copy the snippet in the `pom.xml` file for your project, just after the
`dependencies` section. The snippet should look like this:
```xml
<distributionManagement>
<repository>
<id>central</id>
<name>83d43b5afeb5-releases</name>
<url>${env.MAVEN_REPO_URL}/libs-release-local</url>
</repository>
</distributionManagement>
```
Another step you need to do before you can deploy the dependency to Artifactory
is to configure the authentication data. It is a simple task, but Maven requires
it to stay in a file called `settings.xml` that has to be in the `.m2` subdirectory
in the user's homedir.
Since you want to use GitLab Runner to automatically deploy the application, you
should create the file in the project's home directory and set a command line
parameter in `.gitlab-ci.yml` to use the custom location instead of the default one:
1. Create a folder called `.m2` in the root of your repository
1. Create a file called `settings.xml` in the `.m2` folder
1. Copy the following content into a `settings.xml` file:
```xml
<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd"
xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<servers>
<server>
<id>central</id>
<username>${env.MAVEN_REPO_USER}</username>
<password>${env.MAVEN_REPO_PASS}</password>
</server>
</servers>
</settings>
```
Username and password will be replaced by the correct values using secret variables.
### Configure GitLab CI/CD for `simple-maven-dep`
Now it's time we set up [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/) to automatically build, test and deploy the dependency!
GitLab CI/CD uses a file in the root of the repo, named `.gitlab-ci.yml`, to read the definitions for jobs
that will be executed by the configured GitLab Runners. You can read more about this file in the [GitLab Documentation](https://docs.gitlab.com/ee/ci/yaml/).
First of all, remember to set up secret variables for your deployment. Navigate to your project's **Settings > CI/CD** page
and add the following secret variables (replace them with your current values, of course):
- **MAVEN_REPO_URL**: `http://artifactory.example.com:8081/artifactory` (your Artifactory URL)
- **MAVEN_REPO_USER**: `gitlab` (your Artifactory username)
- **MAVEN_REPO_PASS**: `AKCp2WXr3G61Xjz1PLmYa3arm3yfBozPxSta4taP3SeNu2HPXYa7FhNYosnndFNNgoEds8BCS` (your Artifactory Encrypted Password)
Now it's time to define jobs in `.gitlab-ci.yml` and push it to the repo:
```yaml
image: maven:latest
variables:
MAVEN_CLI_OPTS: "-s .m2/settings.xml --batch-mode"
MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
cache:
paths:
- .m2/repository/
- target/
build:
stage: build
script:
- mvn $MAVEN_CLI_OPTS compile
test:
stage: test
script:
- mvn $MAVEN_CLI_OPTS test
deploy:
stage: deploy
script:
- mvn $MAVEN_CLI_OPTS deploy
only:
- master
```
GitLab Runner will use the latest [Maven Docker image](https://hub.docker.com/_/maven/), which already contains all the tools and the dependencies you need to manage the project,
in order to run the jobs.
Environment variables are set to instruct Maven to use the `homedir` of the repo instead of the user's home when searching for configuration and dependencies.
Caching the `.m2/repository folder` (where all the Maven files are stored), and the `target` folder (where our application will be created), is useful for speeding up the process
by running all Maven phases in a sequential order, therefore, executing `mvn test` will automatically run `mvn compile` if necessary.
Both `build` and `test` jobs leverage the `mvn` command to compile the application and to test it as defined in the test suite that is part of the application.
Deploy to Artifactory is done as defined by the secret variables we have just set up.
The deployment occurs only if we're pushing or merging to `master` branch, so that the development versions are tested but not published.
Done! Now you have all the changes in the GitLab repo, and a pipeline has already been started for this commit. In the **Pipelines** tab you can see what's happening.
If the deployment has been successful, the deploy job log will output:
```
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.983 s
```
>**Note**:
the `mvn` command downloads a lot of files from the internet, so you'll see a lot of extra activity in the log the first time you run it.
Yay! You did it! Checking in Artifactory will confirm that you have a new artifact available in the `libs-release-local` repo.
## Create the main Maven application
Now that you have the dependency available on Artifactory, it's time to use it!
Let's see how we can have it as a dependency to our main application.
### Prepare the main application
We'll use again a Maven app that can be cloned from our example project:
1. Create a new project by selecting **Import project from ➔ Repo by URL**
1. Add the following URL:
```
https://gitlab.com/gitlab-examples/maven/simple-maven-app.git
```
1. Click **Create project**
This one is a simple app as well. If you look at the `src/main/java/com/example/app/App.java`
file you can see that it imports the `com.example.dep.Dep` class and calls the `hello` method passing `GitLab` as a parameter.
Since Maven doesn't know how to resolve the dependency, you need to modify the configuration:
1. Go back to Artifactory
1. Browse the `libs-release-local` repository
1. Select the `simple-maven-dep-1.0.jar` file
1. Find the configuration snippet from the **Dependency Declaration** section of the main panel
1. Copy the snippet in the `dependencies` section of the `pom.xml` file.
The snippet should look like this:
```xml
<dependency>
<groupId>com.example.dep</groupId>
<artifactId>simple-maven-dep</artifactId>
<version>1.0</version>
</dependency>
```
### Configure the Artifactory repository location
At this point you defined the dependency for the application, but you still miss where you can find the required files.
You need to create a `.m2/settings.xml` file as you did for the dependency project, and let Maven know the location using environment variables.
Here is how you can get the content of the file directly from Artifactory:
1. From the main screen, click on the `libs-release-local` item in the **Set Me Up** panel
1. Click on **Generate Maven Settings**
1. Click on **Generate Settings**
1. Copy to clipboard the configuration file
1. Save the file as `.m2/settings.xml` in your repo
Now you are ready to use the Artifactory repository to resolve dependencies and use `simple-maven-dep` in your main application!
### Configure GitLab CI/CD for `simple-maven-app`
You need a last step to have everything in place: configure the `.gitlab-ci.yml` file for this project, as you already did for `simple-maven-dep`.
You want to leverage [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/) to automatically build, test and run your awesome application,
and see if you can get the greeting as expected!
All you need to do is to add the following `.gitlab-ci.yml` to the repo:
```yaml
image: maven:latest
stages:
- build
- test
- run
variables:
MAVEN_CLI_OPTS: "-s .m2/settings.xml --batch-mode"
MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
cache:
paths:
- .m2/repository/
- target/
build:
stage: build
script:
- mvn $MAVEN_CLI_OPTS compile
test:
stage: test
script:
- mvn $MAVEN_CLI_OPTS test
run:
stage: run
script:
- mvn $MAVEN_CLI_OPTS package
- mvn $MAVEN_CLI_OPTS exec:java -Dexec.mainClass="com.example.app.App"
```
It is very similar to the configuration used for `simple-maven-dep`, but instead of the `deploy` job there is a `run` job.
Probably something that you don't want to use in real projects, but here it is useful to see the application executed automatically.
And that's it! In the `run` job output log you will find a friendly hello to GitLab!
## Conclusion
In this article we covered the basic steps to use an Artifactory Maven repository to automatically publish and consume artifacts.
A similar approach could be used to interact with any other Maven compatible Binary Repository Manager.
Obviously, you can improve these examples, optimizing the `.gitlab-ci.yml` file to better suit your needs, and adapting to your workflow.
doc/articles/index.md
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...@@ -28,7 +28,6 @@ Build, test, and deploy the software you develop with [GitLab CI/CD](../ci/READM ...@@ -28,7 +28,6 @@ Build, test, and deploy the software you develop with [GitLab CI/CD](../ci/READM
| :------------ | :------: | --------------: | | :------------ | :------: | --------------: |
| [Autoscaling GitLab Runners on AWS](runner_autoscale_aws/index.md) | Admin guide | 2017-11-24 | | [Autoscaling GitLab Runners on AWS](runner_autoscale_aws/index.md) | Admin guide | 2017-11-24 |
| [How to test and deploy Laravel/PHP applications with GitLab CI/CD and Envoy](laravel_with_gitlab_and_envoy/index.md) | Tutorial | 2017-08-31 | | [How to test and deploy Laravel/PHP applications with GitLab CI/CD and Envoy](laravel_with_gitlab_and_envoy/index.md) | Tutorial | 2017-08-31 |
| [How to deploy Maven projects to Artifactory with GitLab CI/CD](artifactory_and_gitlab/index.md) | Tutorial | 2017-08-15 |
| [Making CI Easier with GitLab](https://about.gitlab.com/2017/07/13/making-ci-easier-with-gitlab/) | Concepts | 2017-07-13 | | [Making CI Easier with GitLab](https://about.gitlab.com/2017/07/13/making-ci-easier-with-gitlab/) | Concepts | 2017-07-13 |
| [Dockerizing GitLab Review Apps](https://about.gitlab.com/2017/07/11/dockerizing-review-apps/) | Concepts | 2017-07-11 | | [Dockerizing GitLab Review Apps](https://about.gitlab.com/2017/07/11/dockerizing-review-apps/) | Concepts | 2017-07-11 |
| [Continuous Integration: From Jenkins to GitLab Using Docker](https://about.gitlab.com/2017/07/27/docker-my-precious/) | Concepts | 2017-07-27 | | [Continuous Integration: From Jenkins to GitLab Using Docker](https://about.gitlab.com/2017/07/27/docker-my-precious/) | Concepts | 2017-07-27 |
......
doc/ci/README.md
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...@@ -121,7 +121,7 @@ Here is an collection of tutorials and guides on setting up your CI pipeline. ...@@ -121,7 +121,7 @@ Here is an collection of tutorials and guides on setting up your CI pipeline.
- [Analyze code quality with the Code Climate CLI](examples/code_climate.md) - [Analyze code quality with the Code Climate CLI](examples/code_climate.md)
- **Articles** - **Articles**
- [How to test and deploy Laravel/PHP applications with GitLab CI/CD and Envoy](../articles/laravel_with_gitlab_and_envoy/index.md) - [How to test and deploy Laravel/PHP applications with GitLab CI/CD and Envoy](../articles/laravel_with_gitlab_and_envoy/index.md)
- [How to deploy Maven projects to Artifactory with GitLab CI/CD](../articles/artifactory_and_gitlab/index.md) - [How to deploy Maven projects to Artifactory with GitLab CI/CD](examples/artifactory_and_gitlab/index.md)
- [Automated Debian packaging](https://about.gitlab.com/2016/10/12/automated-debian-package-build-with-gitlab-ci/) - [Automated Debian packaging](https://about.gitlab.com/2016/10/12/automated-debian-package-build-with-gitlab-ci/)
- [Spring boot application with GitLab CI and Kubernetes](https://about.gitlab.com/2016/12/14/continuous-delivery-of-a-spring-boot-application-with-gitlab-ci-and-kubernetes/) - [Spring boot application with GitLab CI and Kubernetes](https://about.gitlab.com/2016/12/14/continuous-delivery-of-a-spring-boot-application-with-gitlab-ci-and-kubernetes/)
- [Setting up GitLab CI for iOS projects](https://about.gitlab.com/2016/03/10/setting-up-gitlab-ci-for-ios-projects/) - [Setting up GitLab CI for iOS projects](https://about.gitlab.com/2016/03/10/setting-up-gitlab-ci-for-ios-projects/)
......
doc/ci/examples/README.md
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...@@ -27,8 +27,7 @@ Apart from those, here is an collection of tutorials and guides on setting up yo ...@@ -27,8 +27,7 @@ Apart from those, here is an collection of tutorials and guides on setting up yo
### Java ### Java
- **Articles:** - [Continuous Delivery of a Spring Boot application with GitLab CI and Kubernetes](https://about.gitlab.com/2016/12/14/continuous-delivery-of-a-spring-boot-application-with-gitlab-ci-and-kubernetes/)
- [Continuous Delivery of a Spring Boot application with GitLab CI and Kubernetes](https://about.gitlab.com/2016/12/14/continuous-delivery-of-a-spring-boot-application-with-gitlab-ci-and-kubernetes/)
### Scala ### Scala
...@@ -41,18 +40,15 @@ Apart from those, here is an collection of tutorials and guides on setting up yo ...@@ -41,18 +40,15 @@ Apart from those, here is an collection of tutorials and guides on setting up yo
### Elixir ### Elixir
- [Test a Phoenix application](test-phoenix-application.md) - [Test a Phoenix application](test-phoenix-application.md)
- **Articles:** - [Building an Elixir Release into a Docker image using GitLab CI](https://about.gitlab.com/2016/08/11/building-an-elixir-release-into-docker-image-using-gitlab-ci-part-1/)
- [Building an Elixir Release into a Docker image using GitLab CI](https://about.gitlab.com/2016/08/11/building-an-elixir-release-into-docker-image-using-gitlab-ci-part-1/)
### iOS ### iOS
- **Articles:** - [Setting up GitLab CI for iOS projects](https://about.gitlab.com/2016/03/10/setting-up-gitlab-ci-for-ios-projects/)
- [Setting up GitLab CI for iOS projects](https://about.gitlab.com/2016/03/10/setting-up-gitlab-ci-for-ios-projects/)
### Android ### Android
- **Articles:** - [Setting up GitLab CI for Android projects](https://about.gitlab.com/2016/11/30/setting-up-gitlab-ci-for-android-projects/)
- [Setting up GitLab CI for Android projects](https://about.gitlab.com/2016/11/30/setting-up-gitlab-ci-for-android-projects/)
### Code quality analysis ### Code quality analysis
...@@ -63,20 +59,19 @@ Apart from those, here is an collection of tutorials and guides on setting up yo ...@@ -63,20 +59,19 @@ Apart from those, here is an collection of tutorials and guides on setting up yo
- [Using `dpl` as deployment tool](deployment/README.md) - [Using `dpl` as deployment tool](deployment/README.md)
- [Repositories with examples for various languages](https://gitlab.com/groups/gitlab-examples) - [Repositories with examples for various languages](https://gitlab.com/groups/gitlab-examples)
- [The .gitlab-ci.yml file for GitLab itself](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/.gitlab-ci.yml) - [The .gitlab-ci.yml file for GitLab itself](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/.gitlab-ci.yml)
- **Articles:** - [Continuous Deployment with GitLab: how to build and deploy a Debian Package with GitLab CI](https://about.gitlab.com/2016/10/12/automated-debian-package-build-with-gitlab-ci/)
- [Continuous Deployment with GitLab: how to build and deploy a Debian Package with GitLab CI](https://about.gitlab.com/2016/10/12/automated-debian-package-build-with-gitlab-ci/) - [How to deploy Maven projects to Artifactory with GitLab CI/CD](artifactory_and_gitlab/index.md)
## GitLab CI for GitLab Pages ## GitLab CI/CD for GitLab Pages
- [Example projects](https://gitlab.com/pages) - [Example projects](https://gitlab.com/pages)
- **Articles:** - [Creating and Tweaking `.gitlab-ci.yml` for GitLab Pages](../../user/project/pages/getting_started_part_four.md)
- [Creating and Tweaking `.gitlab-ci.yml` for GitLab Pages](../../user/project/pages/getting_started_part_four.md) - [SSGs Part 3: Build any SSG site with GitLab Pages](https://about.gitlab.com/2016/06/17/ssg-overview-gitlab-pages-part-3-examples-ci/):
- [SSGs Part 3: Build any SSG site with GitLab Pages](https://about.gitlab.com/2016/06/17/ssg-overview-gitlab-pages-part-3-examples-ci/): examples for Ruby-, NodeJS-, Python-, and GoLang-based SSGs
examples for Ruby-, NodeJS-, Python-, and GoLang-based SSGs - [Building a new GitLab docs site with Nanoc, GitLab CI, and GitLab Pages](https://about.gitlab.com/2016/12/07/building-a-new-gitlab-docs-site-with-nanoc-gitlab-ci-and-gitlab-pages/)
- [Building a new GitLab docs site with Nanoc, GitLab CI, and GitLab Pages](https://about.gitlab.com/2016/12/07/building-a-new-gitlab-docs-site-with-nanoc-gitlab-ci-and-gitlab-pages/) - [Publish code coverage reports with GitLab Pages](https://about.gitlab.com/2016/11/03/publish-code-coverage-report-with-gitlab-pages/)
- [Publish code coverage reports with GitLab Pages](https://about.gitlab.com/2016/11/03/publish-code-coverage-report-with-gitlab-pages/)
See the documentation on [GitLab Pages](../../user/project/pages/index.md) for a complete overview.
See the topic [GitLab Pages](../../user/project/pages/index.md) for a complete overview.
## More ## More
......
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---
redirect_from: 'https://docs.gitlab.com/ee/articles/artifactory_and_gitlab/index.html'
---
# How to deploy Maven projects to Artifactory with GitLab CI/CD
> **[Article Type](../../../development/writing_documentation.md#types-of-technical-articles):** tutorial ||
> **Level:** intermediary ||
> **Author:** [Fabio Busatto](https://gitlab.com/bikebilly) ||
> **Publication date:** 2017-08-15
## Introduction
In this article, we will show how you can leverage the power of [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/)
to build a [Maven](https://maven.apache.org/) project, deploy it to [Artifactory](https://www.jfrog.com/artifactory/), and then use it from another Maven application as a dependency.
You'll create two different projects:
- `simple-maven-dep`: the app built and deployed to Artifactory (available at https://gitlab.com/gitlab-examples/maven/simple-maven-dep)
- `simple-maven-app`: the app using the previous one as a dependency (available at https://gitlab.com/gitlab-examples/maven/simple-maven-app)
We assume that you already have a GitLab account on [GitLab.com](https://gitlab.com/), and that you know the basic usage of Git and [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/).
We also assume that an Artifactory instance is available and reachable from the internet, and that you have valid credentials to deploy on it.
## Create the simple Maven dependency
First of all, you need an application to work with: in this specific case we will
use a simple one, but it could be any Maven application. This will be the
dependency you want to package and deploy to Artifactory, in order to be
available to other projects.
### Prepare the dependency application
For this article you'll use a Maven app that can be cloned from our example
project:
1. Log in to your GitLab account
1. Create a new project by selecting **Import project from ➔ Repo by URL**
1. Add the following URL:
```
https://gitlab.com/gitlab-examples/maven/simple-maven-dep.git
```
1. Click **Create project**
This application is nothing more than a basic class with a stub for a JUnit based test suite.
It exposes a method called `hello` that accepts a string as input, and prints a hello message on the screen.
The project structure is really simple, and you should consider these two resources:
- `pom.xml`: project object model (POM) configuration file
- `src/main/java/com/example/dep/Dep.java`: source of our application
### Configure the Artifactory deployment
The application is ready to use, but you need some additional steps to deploy it to Artifactory:
1. Log in to Artifactory with your user's credentials.
1. From the main screen, click on the `libs-release-local` item in the **Set Me Up** panel.
1. Copy to clipboard the configuration snippet under the **Deploy** paragraph.
1. Change the `url` value in order to have it configurable via secret variables.
1. Copy the snippet in the `pom.xml` file for your project, just after the
`dependencies` section. The snippet should look like this:
```xml
<distributionManagement>
<repository>
<id>central</id>
<name>83d43b5afeb5-releases</name>
<url>${env.MAVEN_REPO_URL}/libs-release-local</url>
</repository>
</distributionManagement>
```
Another step you need to do before you can deploy the dependency to Artifactory
is to configure the authentication data. It is a simple task, but Maven requires
it to stay in a file called `settings.xml` that has to be in the `.m2` subdirectory
in the user's homedir.
Since you want to use GitLab Runner to automatically deploy the application, you
should create the file in the project's home directory and set a command line
parameter in `.gitlab-ci.yml` to use the custom location instead of the default one:
1. Create a folder called `.m2` in the root of your repository
1. Create a file called `settings.xml` in the `.m2` folder
1. Copy the following content into a `settings.xml` file:
```xml
<settings xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd"
xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<servers>
<server>
<id>central</id>
<username>${env.MAVEN_REPO_USER}</username>
<password>${env.MAVEN_REPO_PASS}</password>
</server>
</servers>
</settings>
```
Username and password will be replaced by the correct values using secret variables.
### Configure GitLab CI/CD for `simple-maven-dep`
Now it's time we set up [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/) to automatically build, test and deploy the dependency!
GitLab CI/CD uses a file in the root of the repo, named `.gitlab-ci.yml`, to read the definitions for jobs
that will be executed by the configured GitLab Runners. You can read more about this file in the [GitLab Documentation](https://docs.gitlab.com/ee/ci/yaml/).
First of all, remember to set up secret variables for your deployment. Navigate to your project's **Settings > CI/CD** page
and add the following secret variables (replace them with your current values, of course):
- **MAVEN_REPO_URL**: `http://artifactory.example.com:8081/artifactory` (your Artifactory URL)
- **MAVEN_REPO_USER**: `gitlab` (your Artifactory username)
- **MAVEN_REPO_PASS**: `AKCp2WXr3G61Xjz1PLmYa3arm3yfBozPxSta4taP3SeNu2HPXYa7FhNYosnndFNNgoEds8BCS` (your Artifactory Encrypted Password)
Now it's time to define jobs in `.gitlab-ci.yml` and push it to the repo:
```yaml
image: maven:latest
variables:
MAVEN_CLI_OPTS: "-s .m2/settings.xml --batch-mode"
MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
cache:
paths:
- .m2/repository/
- target/
build:
stage: build
script:
- mvn $MAVEN_CLI_OPTS compile
test:
stage: test
script:
- mvn $MAVEN_CLI_OPTS test
deploy:
stage: deploy
script:
- mvn $MAVEN_CLI_OPTS deploy
only:
- master
```
GitLab Runner will use the latest [Maven Docker image](https://hub.docker.com/_/maven/), which already contains all the tools and the dependencies you need to manage the project,
in order to run the jobs.
Environment variables are set to instruct Maven to use the `homedir` of the repo instead of the user's home when searching for configuration and dependencies.
Caching the `.m2/repository folder` (where all the Maven files are stored), and the `target` folder (where our application will be created), is useful for speeding up the process
by running all Maven phases in a sequential order, therefore, executing `mvn test` will automatically run `mvn compile` if necessary.
Both `build` and `test` jobs leverage the `mvn` command to compile the application and to test it as defined in the test suite that is part of the application.
Deploy to Artifactory is done as defined by the secret variables we have just set up.
The deployment occurs only if we're pushing or merging to `master` branch, so that the development versions are tested but not published.
Done! Now you have all the changes in the GitLab repo, and a pipeline has already been started for this commit. In the **Pipelines** tab you can see what's happening.
If the deployment has been successful, the deploy job log will output:
```
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.983 s
```
>**Note**:
the `mvn` command downloads a lot of files from the internet, so you'll see a lot of extra activity in the log the first time you run it.
Yay! You did it! Checking in Artifactory will confirm that you have a new artifact available in the `libs-release-local` repo.
## Create the main Maven application
Now that you have the dependency available on Artifactory, it's time to use it!
Let's see how we can have it as a dependency to our main application.
### Prepare the main application
We'll use again a Maven app that can be cloned from our example project:
1. Create a new project by selecting **Import project from ➔ Repo by URL**
1. Add the following URL:
```
https://gitlab.com/gitlab-examples/maven/simple-maven-app.git
```
1. Click **Create project**
This one is a simple app as well. If you look at the `src/main/java/com/example/app/App.java`
file you can see that it imports the `com.example.dep.Dep` class and calls the `hello` method passing `GitLab` as a parameter.
Since Maven doesn't know how to resolve the dependency, you need to modify the configuration:
1. Go back to Artifactory
1. Browse the `libs-release-local` repository
1. Select the `simple-maven-dep-1.0.jar` file
1. Find the configuration snippet from the **Dependency Declaration** section of the main panel
1. Copy the snippet in the `dependencies` section of the `pom.xml` file.
The snippet should look like this:
```xml
<dependency>
<groupId>com.example.dep</groupId>
<artifactId>simple-maven-dep</artifactId>
<version>1.0</version>
</dependency>
```
### Configure the Artifactory repository location
At this point you defined the dependency for the application, but you still miss where you can find the required files.
You need to create a `.m2/settings.xml` file as you did for the dependency project, and let Maven know the location using environment variables.
Here is how you can get the content of the file directly from Artifactory:
1. From the main screen, click on the `libs-release-local` item in the **Set Me Up** panel
1. Click on **Generate Maven Settings**
1. Click on **Generate Settings**
1. Copy to clipboard the configuration file
1. Save the file as `.m2/settings.xml` in your repo
Now you are ready to use the Artifactory repository to resolve dependencies and use `simple-maven-dep` in your main application!
### Configure GitLab CI/CD for `simple-maven-app`
You need a last step to have everything in place: configure the `.gitlab-ci.yml` file for this project, as you already did for `simple-maven-dep`.
You want to leverage [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/) to automatically build, test and run your awesome application,
and see if you can get the greeting as expected!
All you need to do is to add the following `.gitlab-ci.yml` to the repo:
```yaml
image: maven:latest
stages:
- build
- test
- run
variables:
MAVEN_CLI_OPTS: "-s .m2/settings.xml --batch-mode"
MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
cache:
paths:
- .m2/repository/
- target/
build:
stage: build
script:
- mvn $MAVEN_CLI_OPTS compile
test:
stage: test
script:
- mvn $MAVEN_CLI_OPTS test
run:
stage: run
script:
- mvn $MAVEN_CLI_OPTS package
- mvn $MAVEN_CLI_OPTS exec:java -Dexec.mainClass="com.example.app.App"
```
It is very similar to the configuration used for `simple-maven-dep`, but instead of the `deploy` job there is a `run` job.
Probably something that you don't want to use in real projects, but here it is useful to see the application executed automatically.
And that's it! In the `run` job output log you will find a friendly hello to GitLab!
## Conclusion
In this article we covered the basic steps to use an Artifactory Maven repository to automatically publish and consume artifacts.
A similar approach could be used to interact with any other Maven compatible Binary Repository Manager.
Obviously, you can improve these examples, optimizing the `.gitlab-ci.yml` file to better suit your needs, and adapting to your workflow.
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