Add GHA workflow for generating WebAPI client library for Java

.github/workflows/4-release.yaml

@@ -9,8 +9,17 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
+  detect-current-api-version:
+    uses: ./.github/workflows/detect-webapi-version.yaml
+    with:
+      # We cannot use environment variables here due to workflow limitation.
+      # https://docs.github.com/en/enterprise-cloud@latest/actions/using-workflows/reusing-workflows#limitations
+      registry: ghcr.io
+      image-repo: ${{ github.repository }}
+
   publish-container-image:
     runs-on: ubuntu-latest
+    needs: detect-current-api-version
     permissions:
       packages: write
     steps:
@@ -39,3 +48,27 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           provenance: false
+
+  detect-newer-api-version:
+    needs: publish-container-image
+    uses: ./.github/workflows/detect-webapi-version.yaml
+    with:
+      # We cannot use environment variables here due to workflow limitation.
+      # https://docs.github.com/en/enterprise-cloud@latest/actions/using-workflows/reusing-workflows#limitations
+      registry: ghcr.io
+      image-repo: ${{ github.repository }}
+
+  generate-webapi-clients:
+    needs:
+      - detect-current-api-version
+      - detect-newer-api-version
+    if: ${{ needs.detect-current-api-version.outputs.apiver != needs.detect-newer-api-version.outputs.apiver }}
+    uses: ./.github/workflows/4.a-generate-webapi-clients.yaml
+    permissions:
+      contents: write
+      packages: write
+    with:
+      # We cannot use environment variables here due to workflow limitation.
+      # https://docs.github.com/en/enterprise-cloud@latest/actions/using-workflows/reusing-workflows#limitations
+      registry: ghcr.io
+      image-repo: ${{ github.repository }}

.github/workflows/4.a-generate-webapi-clients.yaml

@@ -0,0 +1,48 @@
+name: 4.a-Generate WebAPI client libraries
+
+on:
+  workflow_call:
+    inputs:
+      registry:
+        type: string
+        required: true
+      image-repo:
+        type: string
+        required: true
+      tag:
+        type: string
+        required: false
+        default: latest
+  workflow_dispatch:
+    inputs:
+      registry:
+        type: string
+        required: false
+        default: ghcr.io
+      image-repo:
+        type: string
+        required: false
+        default: "green-software-foundation/carbon-aware-sdk"
+      tag:
+        type: string
+        required: false
+        default: latest
+
+permissions:
+  contents: write
+  packages: write
+
+jobs:
+  detect-api-version:
+    uses: ./.github/workflows/detect-webapi-version.yaml
+    with:
+      registry: ${{ inputs.registry }}
+      image-repo: ${{ inputs.image-repo }}
+      tag: ${{ inputs.tag }}
+
+  generate-java-client:
+    needs: detect-api-version
+    uses: ./.github/workflows/4.a.1-generate-webapi-client-java.yaml
+    with:
+      image: ${{ needs.detect-api-version.outputs.image }}
+      apiver: ${{ needs.detect-api-version.outputs.apiver }}

.github/workflows/4.a.1-generate-webapi-client-java.yaml

@@ -0,0 +1,84 @@
+name: 4.a.1-Generate WebAPI client library for Java
+
+on:
+  workflow_call:
+    inputs:
+      image:
+        required: true
+        type: string
+      apiver:
+        required: true
+        type: string
+
+jobs:
+  generate-java-client:
+    runs-on: ubuntu-latest
+    services:
+      webapi:
+        image: ${{ inputs.image }}
+        ports:
+          - 8080:8080
+        options: >-
+          --health-cmd "curl -sS http://localhost:8080/health"
+          --health-interval 3s
+          --health-timeout 5s
+          --health-retries 5
+    permissions:
+      packages: write
+    env:
+      API: http://localhost:8080/api/v1/swagger.yaml
+    steps:
+      - name: Prepare
+        run: |
+          mkdir work pages
+          npm install -g @openapitools/[email protected]
+      - name: Generate client library
+        run: |
+          echo '{"apiPackage": "foundation.greensoftware.carbonaware.webapi.client", "artifactDescription": "Carbon Aware SDK client library for Java", "artifactId": "casdk-client", "artifactVersion": "${{ inputs.apiver }}", "developerOrganization": "Green Software Foundation", "developerOrganizationUrl": "https://greensoftware.foundation/", "groupId": "foundation.greensoftware", "licenseName": "MIT License", "scmUrl": "${{ env.REPO }}", "artifactUrl": "${{ env.REPO }}/packages/", "scmConnection": "${{ github.repositoryUrl }}", "scmDeveloperConnection": "${{ github.repositoryUrl }}", "licenseUrl": "https://opensource.org/license/mit/", "developerName": "Green Software Foundation", "developerEmail": "[email protected]"}' > config.json
+          openapi-generator-cli generate -i ${{ env.API }} -g java -o work -c config.json
+          sed -i "s|</project>|<distributionManagement><repository><id>github</id><name>GitHub Packages</name><url>https://maven.pkg.github.com/${{ github.repository }}</url></repository></distributionManagement></project>|" work/pom.xml
+        shell: bash
+      - name: Setup Java 8
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: maven
+      - name: Run Maven
+        run: mvn -B deploy javadoc:javadoc
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        working-directory: work
+      - name: Upload Javadoc
+        uses: actions/upload-artifact@v4
+        with:
+          name: javadoc
+          path: work/target/apidocs
+
+  push-javadoc:
+    needs: generate-java-client
+    concurrency: push-to-doc-website
+    runs-on: ubuntu-latest
+    env:
+      DOCPATH: casdk-docs/static/client-apidocs/${{ inputs.apiver }}/java
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Prepare
+        run: mkdir -p ${{ env.DOCPATH }}
+      - name: Download Javadoc
+        uses: actions/download-artifact@v4
+        with:
+          name: javadoc
+          path: ${{ env.DOCPATH }}
+      - name: Push Javadoc
+        run: |
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add ${{ env.DOCPATH }}
+          git commit -m "Add Javadoc for WebAPI ${{ inputs.apiver }}"
+          git push origin ${{ github.ref_name }}
+        env:
+          GITHUB_TOKEN: ${{ github.token }}

.github/workflows/detect-webapi-version.yaml

@@ -0,0 +1,55 @@
+name: Detect API version from OpenAPI document in WebAPI container image
+
+on:
+  workflow_call:
+    inputs:
+      registry:
+        type: string
+        required: true
+      image-repo:
+        type: string
+        required: true
+      tag:
+        type: string
+        required: false
+        default: latest
+    outputs:
+      image:
+        value: ${{ jobs.make-image-name-for-pull.outputs.image }}
+      apiver:
+        value: ${{ jobs.detect-api-version.outputs.apiver }}
+
+jobs:
+  make-image-name-for-pull:
+    runs-on: ubuntu-latest
+    outputs:
+      image: ${{ steps.make-image-name.outputs.IMAGE_NAME }}
+    steps:
+      - name: Make string for pulling container image
+        id: make-image-name
+        run: |
+          REPO=${{ inputs.registry }}/${{ inputs.image-repo }}
+          REPO_LOWER=${REPO,,}
+          echo "IMAGE_NAME=$REPO_LOWER:${{ inputs.tag }}" >> "$GITHUB_OUTPUT"
+
+  detect-api-version:
+    needs: make-image-name-for-pull
+    runs-on: ubuntu-latest
+    services:
+      webapi:
+        image: ${{ needs.make-image-name-for-pull.outputs.image }}
+        ports:
+          - 8080:8080
+        options: >-
+          --health-cmd "curl -sS http://localhost:8080/health"
+          --health-interval 3s
+          --health-timeout 5s
+          --health-retries 5
+    outputs:
+      apiver: ${{ steps.detect-api-version.outputs.CURRENT_API_VERSION }}
+    steps:
+      - name: Detect API version
+        id: detect-api-version
+        run: |
+          API_VERSION=`curl -sS http://localhost:8080/api/v1/swagger.yaml | yq -r .info.version`
+          echo "CURRENT_API_VERSION=$API_VERSION" >> "$GITHUB_OUTPUT"

samples/java-client/README.md

@@ -1,33 +1,19 @@
 # Java Client Example
 
-This folder contains an example for WebAPI client in Java. Client library would
-be generated dynamically via
-[openapi-generator-maven-plugin](https://github.com/OpenAPITools/openapi-generator/tree/master/modules/openapi-generator-maven-plugin),
-and call WebAPI endpoints without HTTP code.
+This folder contains an example for WebAPI client in Java. Client library would be pulled from [GitHub Packages](https://github.com/orgs/Green-Software-Foundation/packages?repo_name=carbon-aware-sdk).
 
-Javadoc is [here](apidocs).
-
-openapi-generator-maven-plugin generates Maven/Gradle project when it kicks,
-however this example uses generated codes directly. So you don't need to
-run/modify project files in it.
+Javadoc is [here](https://carbon-aware-sdk.greensoftware.foundation/client-apidocs/1.0.0/java).
 
 ## Requirements
 
-- OpenAPI spec file
-  - Both online and offline file are available.
-  - See [WebAPI document](../../docs/carbon-aware-webapi.md#autogenerate-webapi)
-    for details.
 - WebAPI instance
-  - See the [Overview](../../docs/overview.md#publish-webapi-with-container)
-    if you'd like to start it on container.
+  - See the [Overview](../../docs/overview.md#publish-webapi-with-container) if you'd like to start it on container.
 - Java 8 or later
 - Maven
 
 ## Client code
 
-[WebApiClient.java](src/main/java/foundation/greensoftware/carbonawaresdk/samples/java/WebApiClient.java)
-is an example program to call WebAPI endpoint. It calls all of endpoints, and
-shows the result.
+[WebApiClient.java](src/main/java/example/foundation/greensoftware/carbonawaresdk/WebApiClient.java) is an example program to call WebAPI endpoint. It calls all of endpoints, and shows the result.
 
 Following methods are available:
 
@@ -53,19 +39,14 @@ Following methods are available:
   - Call /emissions/average-carbon-intensity/batch
   - Shows average data for westus yesterday.
 
-[OffsetDateTime](https://docs.oracle.com/javase/8/docs/api/java/time/OffsetDateTime.html)
-is used for parameters in each APIs. However the error occurs if nano sec is set
-to it in case of WattTime. So it is highly recommended that clears nanosec field
-like `withNano(0)`.
+[OffsetDateTime](https://docs.oracle.com/javase/8/docs/api/java/time/OffsetDateTime.html) is used for parameters in each APIs. However the error occurs if nano sec is set to it in case of WattTime. So it is highly recommended that clears nanosec field like `withNano(0)`.
 
 ## How it works
 
 ### 1. Set up for [POM](pom.xml)
 
 You need to change following properties:
 
-- `openapi.spec`
-  - OpenAPI spec file
 - `webapi.endpoint`
   - WebAPI base URL
 
@@ -83,27 +64,23 @@ $ mvn exec:java
 
 ### Running in container
 
-This example also can run in container. You can use
-[Maven official image](https://hub.docker.com/_/maven).
+This example also can run in container. You can use [Maven official image](https://hub.docker.com/_/maven).
 
-If you want to run both WebAPI and build process in container, you need to join
-2 containers to same network.
+If you want to run both WebAPI and build process in container, you need to join 2 containers to same network.
 
 Following instructions are for Podman.
 
 #### 1. Create pod
 
-This pod publishes port 80 in the pod to 8080 on the host, then you can access
-WebAPI in the pod. The pod is named to `carbon-aware-sdk`.
+This pod publishes port 80 in the pod to 8080 on the host, then you can access WebAPI in the pod. The pod is named to `carbon-aware-sdk`.
 
 ```sh
 podman pod create -p 8080:80 --name carbon-aware-sdk
 ```
 
 #### 2. Start WebAPI container
 
-Start WebAPI container in `carbon-aware-sdk` pod. It is specified at `--pod`
-option.
+Start WebAPI container in `carbon-aware-sdk` pod. It is specified at `--pod` option.
 
 See [Overview](../../docs/overview.md) document to build container image.
 
@@ -117,13 +94,9 @@ $ podman run -it --rm --pod carbon-aware-sdk \
 
 #### 3. Run Maven in the container
 
-Run `mvn` command in Maven container in `catbon-aware-sdk` pod. You need to
-mount Carbon Aware SDK source directory to the container. It mounts to `/src` in
-the container in following case.
+Run `mvn` command in Maven container in `catbon-aware-sdk` pod. You need to mount Carbon Aware SDK source directory to the container. It mounts to `/src` in the container in following case.
 
-In following command, you can rebuild java-client, and can run the artifact. You
-can get artifacts from `samples/java-client/target` on the container host of
-course.
+In following command, you can rebuild java-client, and can run the artifact. You can get artifacts from `samples/java-client/target` on the container host of course.
 
 ```sh
 $ podman run -it --rm --pod carbon-aware-sdk \
@@ -132,6 +105,4 @@ $ podman run -it --rm --pod carbon-aware-sdk \
     mvn -f /src/samples/java-client/pom.xml clean package exec:java
 ```
 
-Maven will download many dependencies in each `mvn` call. You can avoid it when
-you mount `.m2` like `-v $HOME/.m2:/root/.m2` because it shares Maven cache
-between the host and the container.
+Maven will download many dependencies in each `mvn` call. You can avoid it when you mount `.m2` like `-v $HOME/.m2:/root/.m2` because it shares Maven cache between the host and the container.