Prerequisites

1. Create Artifact Registry
2. Obtain Artifact Registry Address
3. Create Access Token

Local Development

Configure Credentials

Maven

Copy the following content to the settings.xml file, replace <YOUR_TOKEN> with your token, and <REPO_URL> with the Artifact Registry address.

<settings>
  <servers>
    <server>
      <id>cnb-maven-repo</id>
      <username>cnb</username>
      <!-- Replace with your access token -->
      <password><YOUR_TOKEN></password>
    </server>
  </servers>
  <profiles>
    <profile>
      <id>cnb-maven-repo-profile</id>
      <repositories>
        <repository>
          <!-- Must match the server's id -->
          <id>cnb-maven-repo</id>
          <!-- Replace with the Artifact Registry address -->
          <!-- Example 
          <url>https://maven.cnb.cool/cnb/maven-repo/-/packages/</url>
          -->
          <url><REPO_URL></url>
        </repository>
      </repositories>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
    </profile>
  </profiles>
</settings>

Gradle kotlin

1. Configure the token in gradle.properties in the project root directory, replace <YOUR_TOKEN> with your token.

cnbArtifactsGradlePassword=<YOUR_TOKEN>

2. Paste the following content into build.gradle.kts, replace <REPO_URL> with the Artifact Registry address.

publishing {
    repositories {
        maven {
            val cnbArtifactsGradlePassword = project.findProperty("cnbArtifactsGradlePassword")
            
            // Example
            // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
            url = uri("<REPO_URL>")
            credentials {
                username = "cnb"
                password = cnbArtifactsGradlePassword.toString()
            }
        }
    }
}

Gradle groovy

1. Configure the token in gradle.properties in the project root directory, replace <YOUR_TOKEN> with your token.

cnbArtifactsGradlePassword=<YOUR_TOKEN>

2. Paste the following content into build.gradle, replace <REPO_URL> with the Artifact Registry address.

publishing {
      repositories {
        maven {
            def cnbArtifactsGradlePassword = project.findProperty('cnbArtifactsGradlePassword')

            // Example 
            // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
            url = uri('<REPO_URL>')
            credentials {
                username = 'cnb'
                password = cnbArtifactsGradlePassword.toString()
            }
        }
    }
}

Pull Artifacts

Maven

1. Configure the package you need to pull in pom.xml.

<dependencies>
    <dependency>
        <groupId>[GROUP_ID]</groupId>
        <artifactId>[ARTIFACT_ID]</artifactId>
        <version>[VERSION]</version>
    </dependency>
</dependencies>

<!-- Example
<dependencies>
    <dependency>
        <groupId>org.cnb</groupId>
        <artifactId>maven_demo</artifactId>
        <version>9.0.0</version>
    </dependency>
</dependencies> -->

2. Pull artifacts.

mvn clean install
# If using a specific settings.xml, execute:
mvn clean install -s ./settings.xml

Gradle kotlin

1. Configure the dependencies you need in build.gradle.kts.

dependencies {
  implementation("[GROUP_ID]:[ARTIFACT_ID]:[VERSION]")
}

// Example
// dependencies {
//  implementation("com.google.guava:guava:32.1.3-jre")
// }

2. Pull artifacts.

./gradlew build --refresh-dependencies

Gradle groovy

1. Configure the dependencies you need in build.gradle.

dependencies {
    implementation '[GROUP_ID]:[ARTIFACT_ID]:[VERSION]'
}

// Example
// dependencies {
//   implementation 'com.google.guava:guava:32.1.3-jre'
// }

2. Pull artifacts.

./gradlew build --refresh-dependencies

Push Artifacts

Maven

1. Configure the publishing repository and artifact properties in pom.xml, replace <REPO_URL> with the Artifact Registry address.

<project>
  <modelVersion>4.0.0</modelVersion>
  <!-- Artifact properties -->
  <groupId>[GROUP_ID]</groupId>
  <artifactId>[ARTIFACT_ID]</artifactId>
  <version>[VERSION]</version>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <!-- Publishing repository -->
  <distributionManagement>
    <repository>
      <!-- Must match the server's id in settings.xml -->
      <id>cnb-maven-repo</id>
      <name>cnb-maven-repo</name>
      <!-- Example 
      <url>https://maven.cnb.cool/cnb/maven-repo/-/packages/</url>
      -->
      <url><REPO_URL></url>
    </repository>
  </distributionManagement>
</project>

2. Push artifacts.

mvn deploy
# If using a specific settings.xml, execute:
mvn deploy -s ./settings.xml

Gradle kotlin

1. Paste the following content into build.gradle.kts.

plugins {
    `java-library`
    `maven-publish`
}

group = "[GROUP_ID]"
version = "[VERSION]"
val artifactName = "[ARTIFACT_ID]"

publishing {
    publications {
        create<MavenPublication>("myLibrary") {
            groupId = group.toString()
            version = version.toString()
            artifactId = artifactName
            from(components["java"])
        }
    }
}

2. Execute the upload command.

./gradlew publish

Gradle groovy

1. Paste the following content into build.gradle.

plugins {
    id 'java-library'
    id 'maven-publish'
}

group = '[GROUP_ID]'
version = '[VERSION]'
def artifactName = '[ARTIFACT_ID]'

publishing {
    publications {
        myLibrary(MavenPublication) {
            groupId = group
            version = version
            artifactId = artifactName
            from components.java
        }
    }
}

2. Execute the upload command.

./gradlew publish

Cloud Native Build

Configure Credentials

Cloud Native Build supports three ways to use tokens. Refer to Using Tokens in Cloud Native Build and Development. Below are the specific client usage methods:

Maven

Replace <REPO_URL> with the Artifact Registry address.

<settings>
  <servers>
    <server>
      <id>cnb-maven-repo</id>
      <username>cnb</username>
      <!-- Method 1: Use built-in environment variable CNB_TOKEN -->
      <password>${env.CNB_TOKEN}</password>
      <!-- Method 2: Directly use, replace <YOUR_TOKEN> with your token -->
      <!--<password><YOUR_TOKEN></password>-->
      <!-- Method 3: Secret store, replace <ENV_NAME> with your secret store variable -->
      <!--<password>${env.<ENV_NAME>}</password>-->
    </server>
  </servers>
  <profiles>
    <profile>
      <id>cnb-maven-repo-profile</id>
      <repositories>
        <repository>
          <!-- Must match the server's id -->
          <id>cnb-maven-repo</id>
          <!-- Example
          <url>https://maven.cnb.cool/cnb/maven-repo/-/packages/</url>
          -->
          <url><REPO_URL></url>
        </repository>
      </repositories>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
    </profile>
  </profiles>
</settings>

Gradle kotlin

Replace <REPO_URL> with the Artifact Registry address.

publishing {
    repositories {
        maven {
            // Method 1: Use built-in environment variable CNB_TOKEN
            val cnbArtifactsGradlePassword = System.getenv("CNB_TOKEN")
            // Method 2: Directly use, replace <YOUR_TOKEN> with your token
            // val cnbArtifactsGradlePassword = "<YOUR_TOKEN>"
            // Method 3: Secret store, replace <ENV_NAME> with your secret store variable
            // val cnbArtifactsGradlePassword = System.getenv("ENV_NAME")

            // Example 
            // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
            url = uri("<REPO_URL>")
            credentials {
                username = "cnb"
                password = cnbArtifactsGradlePassword.toString()
            }
        }
    }
}

Gradle groovy

Replace <REPO_URL> with the Artifact Registry address.

publishing {
      repositories {
        maven {
            // Method 1: Use built-in environment variable CNB_TOKEN
            def cnbArtifactsGradlePassword = System.getenv("CNB_TOKEN")
            // Method 2: Directly use, replace <YOUR_TOKEN> with your token
            // def cnbArtifactsGradlePassword = '<YOUR_TOKEN>'
            // Method 3: Secret store, replace <ENV_NAME> with your secret store variable
            // def cnbArtifactsGradlePassword = System.getenv("ENV_NAME")

            // Example 
            // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
            url = uri('<REPO_URL>')
            credentials {
                username = 'cnb'
                password = cnbArtifactsGradlePassword.toString()
            }
        }
    }
}

Pull Artifacts

Paste the following content into .cnb.yml:

Maven

.cnb.yml

main:
  push:
    - docker:
        image: maven:3.8.5-openjdk-17
      stages:
        - name: mvn package
          script:
            mvn clean install -s ./settings.xml

Gradle

.cnb.yml

main:
  push:
    - docker:
        image: gradle:7.6.6-jdk17
      stages:
        - name: gradle build and run
          script:
            - ./gradlew build --refresh-dependencies

Push Artifacts

Paste the following content into .cnb.yml:

Maven

.cnb.yml

main:
  push:
    - docker:
        image: maven:3.8.5-openjdk-17
      stages:
        - name: mvn package
          script:
            mvn clean deploy -s ./settings.xml

Gradle

.cnb.yml

main:
  push:
    - docker:
        image: gradle:7.6.6-jdk17
      stages:
        - name: gradle publish
          script:
            - ./gradlew publish

Workspaces

Configure Credentials

Same as Cloud Native Build Configure Credentials

Configure Development Image

.cnb.yml

$:
  vscode:
    - docker:
        image: maven:3.8.5-openjdk-17

Pull Artifacts

Same as Local Development Pull Artifacts

Push Artifacts

Same as Local Development Push Artifacts

Examples

Gradle Local Push APK Package

1. Configure the android-application plugin in gradle/libs.versions.toml.

[versions]
agp = "8.11.1"
[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }

2. Configure the maven-publish plugin and apk packaging plugin in build.gradle or build.gradle.kts.

Gradle kotlin

// build.gradle.kts
plugins {
    id("com.android.application") // APK packaging plugin
    id("maven-publish") 
}

Gradle groovy

// build.gradle
plugins {
    id 'com.android.application'  // APK packaging plugin
    id 'maven-publish'
}

3. Configure the build task and push address in build.gradle or build.gradle.kts.

Gradle kotlin

// build.gradle.kts
afterEvaluate {
    publishing {
        publications {
            create<MavenPublication>("releaseApk") {
                groupId = "cnb"
                artifactId = "artifact"
                version = "1.0.0"

                // For signed apps, use outputs/apk/release/${project.name}-release.apk
                val apkFile = layout.buildDirectory.file(
                    "outputs/apk/release/${project.name}-release-unsigned.apk"
                ).get().asFile

                artifact(apkFile) {
                    builtBy(tasks.named("assembleRelease"))
                    classifier = "release"
                    extension = "apk"
                }
            }
        }
        repositories {
            maven {
                // Declare cnbArtifactsGradlePassword in gradle.properties or export CNB_TOKEN=${YOUR_TOKEN}
                val cnbArtifactsGradlePassword = System.getenv("CNB_TOKEN") ?: project.findProperty("cnbArtifactsGradlePassword")

                // Example 
                // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
                url = uri("<REPO_URL>")
                credentials {
                    username = "cnb"
                    password = cnbArtifactsGradlePassword.toString()
                }
            }
        }
    }
}

Gradle groovy

// build.gradle
afterEvaluate {
    publishing {
        publications {
            releaseApk(MavenPublication) {
                groupId = 'cnb'
                artifactId = "artifact"
                version = '1.0.0'

                // For signed apps, use outputs/apk/release/${project.name}-release.apk
                def apkFile = layout.buildDirectory.file(
                    'outputs/apk/release/${project.name}-release-unsigned.apk'
                ).get().asFile

                artifact(apkFile) {
                    builtBy tasks.assembleRelease
                    classifier = 'release'
                    extension = 'apk'
                }
            }
        }
        repositories {
            maven {
                // Declare cnbArtifactsGradlePassword in gradle.properties or export CNB_TOKEN=${YOUR_TOKEN}
                def cnbArtifactsGradlePassword = System.getenv('CNB_TOKEN') ?: project.findProperty('cnbArtifactsGradlePassword')

                // Example 
                // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
                url = '<REPO_URL>'
                credentials {
                    username = 'cnb'
                    password = cnbArtifactsGradlePassword.toString()
                }
            }
        }
    }
}

4. Execute the following command.

./gradlew publish

Gradle Local Push AAR Package

1. Configure the android-library plugin in gradle/libs.versions.toml.

[versions]
agp = "8.11.1"
[plugins]
android-library = { id = "com.android.library", version.ref = "agp" }

2. Configure the aar packaging plugin and maven-publish plugin in build.gradle or build.gradle.kts.

Gradle kotlin

// build.gradle.kts
plugins {
    id("com.android.library") // AAR packaging plugin
    id("maven-publish") 
}

Gradle groovy

// build.gradle
plugins {
    id 'com.android.library'  // AAR packaging plugin
    id 'maven-publish'
}

3. Configure the build task and push address in build.gradle or build.gradle.kts.

Gradle kotlin

// build.gradle.kts
afterEvaluate {
    publishing {
        publications {
            create<MavenPublication>("releaseAar") {
                groupId = "cnb"
                artifactId = "artifact"
                version = "1.0.0"

                from(components["release"])
            }
        }
        repositories {
            maven {
                // Declare cnbArtifactsGradlePassword in gradle.properties or export CNB_TOKEN=${YOUR_TOKEN}
                val cnbArtifactsGradlePassword = System.getenv("CNB_TOKEN") ?: project.findProperty("cnbArtifactsGradlePassword")

                // Example 
                // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
                url = uri("<REPO_URL>")
                credentials {
                    username = "cnb"
                    password = cnbArtifactsGradlePassword.toString()
                }
            }
        }
    }
}

Gradle groovy

// build.gradle
afterEvaluate {
    publishing {
        publications {
            releaseAar(MavenPublication) {
                groupId = 'cnb'
                artifactId = "artifact"
                version = '1.0.0'

                from components.release
            }
        }
        repositories {
            maven {
                // Declare cnbArtifactsGradlePassword in gradle.properties or export CNB_TOKEN=${YOUR_TOKEN}
                def cnbArtifactsGradlePassword = System.getenv('CNB_TOKEN') ?: project.findProperty('cnbArtifactsGradlePassword')

                // Example 
                // url = uri("https://maven.cnb.cool/cnb/maven-repo/-/packages/")
                url = uri("<REPO_URL>")
                credentials {
                    username = 'cnb'
                    password = cnbArtifactsGradlePassword.toString()
                }
            }
        }
    }
}

4. Execute the following command.

./gradlew publish

FAQ

After overwriting an existing version, the dependency build still uses the pre-overwritten version?

This is a Maven mechanism. If the local cache exists, it won't pull from the remote repository. There are three solutions:

1. Use the --update-snapshots command to force Maven to check for updates of snapshot dependencies in the remote repository. This strategy only works for SNAPSHOT versions.

mvn clean package -U

2. Remove the cached package by deleting the local Maven cache.

# macOS and Linux default location: ~/.m2
# Windows default location: C:\Users\{username}\.m2\repository
# Or query with the following command:
mvn help:evaluate -Dexpression=settings.localRepository

3. Set the updatePolicy to always in settings.xml for the dependency repository. This strategy only works for SNAPSHOT versions.

<settings>
  <profiles>
    <profile>
      <id>cnb-maven-repo-profile</id>
      <repositories>
        <repository>
          <id>cnb-maven-repo</id>
          <url><REPO_URL></url>
          <!-- Configure snapshot pull policy -->
          <snapshots>
            <enabled>true</enabled>
            <updatePolicy>always</updatePolicy>
          </snapshots>
        </repository>
      </repositories>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
    </profile>
  </profiles>
</settings>

Encountered 409 Forbidden?

You have already uploaded this package, and overwriting is prohibited. To overwrite the package, go to the corresponding Artifact Registry -> Registry Settings -> Strategy:

• To overwrite only SNAPSHOT versions, select Maven Snapshot Strategy.
• To overwrite both SNAPSHOT and RELEASE versions, select Allow overwriting of all existing versions.

More Usage

For more Maven usage, refer to the official Maven documentation.