Initial Ballerina GraphQL implementation

.github/workflows/build-master.yml

@@ -0,0 +1,42 @@
+name: Build
+
+on:
+    repository_dispatch:
+        types: [ stdlib-publish-snapshot ]
+    push:
+        branches:
+            - master
+    workflow_dispatch:
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        if: github.repository_owner == 'ballerina-platform'
+        steps:
+            -   uses: actions/checkout@v2
+            -   name: Set up JDK 11
+                uses: actions/setup-java@v1
+                with:
+                    java-version: 11
+            -   name: Grant execute permission for gradlew
+                run: chmod +x gradlew
+            -   name: Build with Gradle
+                env:
+                    packageUser: ${{ secrets.BALLERINA_BOT_USERNAME }}
+                    packagePAT: ${{ secrets.BALLERINA_BOT_TOKEN }}
+                run: |
+                    ./gradlew publish
+            -   name: Dispatch Dependent Module Builds
+                if: github.event.action != 'stdlib-publish-snapshot'
+                run: |
+                    echo "Triggering dependent module builds..." && \
+                    curl -u ${{ secrets.BALLERINA_BOT_USERNAME }} -X POST \
+                    https://api.github.com/repos/ballerina-platform/ballerina-standard-library/dispatches \
+                    -H 'Accept: application/vnd.github.v3+json' \
+                    -H 'Authorization: token ${{ secrets.BALLERINA_BOT_TOKEN }}' \
+                    --data '{
+                        "event_type": "stdlib-module-push",
+                        "client_payload": {
+                            "module": "${{ github.repository }}"
+                        }
+                    }'

.github/workflows/publish-release.yml

@@ -0,0 +1,58 @@
+name: Publish release
+
+on:
+    workflow_dispatch:
+    repository_dispatch:
+        types: [ stdlib-release-pipeline ]
+
+jobs:
+    publish-release:
+        runs-on: ubuntu-latest
+        if: github.repository_owner == 'ballerina-platform'
+        steps:
+            -   uses: actions/checkout@v2
+            -   name: Set up JDK 11
+                uses: actions/setup-java@v1
+                with:
+                    java-version: 11
+            -   name: Set version env variable
+                run: echo "VERSION=$((grep -w 'version' | cut -d= -f2) < gradle.properties | cut -d- -f1)" >> $GITHUB_ENV
+            -   name: Pre release depenency version update
+                env:
+                    GITHUB_TOKEN: ${{ secrets.BALLERINA_BOT_TOKEN }}
+                run: |
+                    echo "Version: ${VERSION}"
+                    git config user.name ${{ secrets.BALLERINA_BOT_USERNAME }}
+                    git config user.email ${{ secrets.BALLERINA_BOT_EMAIL }}
+                    git checkout -b release-${VERSION}
+                    sed -i 's/ballerinaLangVersion=\(.*\)-SNAPSHOT/ballerinaLangVersion=\1/g' gradle.properties
+                    sed -i 's/stdlib\(.*\)=\(.*\)-SNAPSHOT/stdlib\1=\2/g' gradle.properties
+                    git add gradle.properties
+                    git commit -m "Move dependencies to stable version" || echo "No changes to commit"
+            -   name: Grant execute permission for gradlew
+                run: chmod +x gradlew
+            -   name: Publish artifact
+                env:
+                    GITHUB_TOKEN: ${{ secrets.BALLERINA_BOT_TOKEN }}
+                    BALLERINA_CENTRAL_ACCESS_TOKEN: ${{ secrets.BALLERINA_CENTRAL_ACCESS_TOKEN }}
+                    packageUser: ${{ secrets.BALLERINA_BOT_USERNAME }}
+                    packagePAT: ${{ secrets.BALLERINA_BOT_TOKEN }}
+                run: |
+                    ./gradlew release -Prelease.useAutomaticVersion=true
+                    ./gradlew -Pversion=${VERSION} publish -x test
+            -   name: Create Github release from the release tag
+                run: |
+                    curl --request POST 'https://api.github.com/repos/ballerina-platform/module-ballerina-graphql/releases' \
+                    --header 'Accept: application/vnd.github.v3+json' \
+                    --header 'Authorization: Bearer ${{ secrets.BALLERINA_BOT_TOKEN }}' \
+                    --header 'Content-Type: application/json' \
+                    --data-raw '{
+                        "tag_name": "v'"$VERSION"'",
+                        "name": "module-ballerina-graphql-v'"$VERSION"'"
+                    }'
+            -   name: Post release PR
+                env:
+                    GITHUB_TOKEN: ${{ secrets.BALLERINA_BOT_TOKEN }}
+                run: |
+                    curl -fsSL https://github.com/github/hub/raw/master/script/get | bash -s 2.14.1
+                    bin/hub pull-request -m "[Automated] Sync master after "$VERSION" release"

.github/workflows/pull-request.yml

@@ -0,0 +1,33 @@
+name: Pull Request Build
+
+on: [ pull_request ]
+
+jobs:
+    ubuntu-build:
+        runs-on: ubuntu-latest
+        steps:
+            -   uses: actions/checkout@v1
+            -   name: Set up JDK 11
+                uses: actions/setup-java@v1
+                with:
+                    java-version: 11
+            -   name: Build with Gradle
+                env:
+                    packageUser: ${{ github.actor }}
+                    packagePAT: ${{ secrets.GITHUB_TOKEN }}
+                run: ./gradlew build
+
+    windows-build:
+        runs-on: windows-latest
+
+        steps:
+            -   uses: actions/checkout@v1
+            -   name: Set up JDK 11
+                uses: actions/setup-java@v1
+                with:
+                    java-version: 11
+            -   name: Build with Gradle
+                env:
+                    packageUser: ${{ github.actor }}
+                    packagePAT: ${{ secrets.GITHUB_TOKEN }}
+                run: ./gradlew.bat build -x test

.github/workflows/stdlib-workflow-trigger.yml

@@ -0,0 +1,24 @@
+name: Stdlib Dependency Update
+
+on:
+    push:
+        branches:
+            - master
+        paths:
+            - 'build.gradle'
+            - 'gradle.properties'
+
+jobs:
+    trigger-workflow:
+        runs-on: ubuntu-latest
+        if: github.repository_owner == 'ballerina-platform'
+        steps:
+            -   name: Initiating repository event
+                run: |
+                    curl -u ${{ secrets.BALLERINA_BOT_USERNAME }} -X POST \
+                    https://api.github.com/repos/ballerina-platform/ballerina-standard-library/dispatches \
+                    -H 'Accept: application/vnd.github.v3+json' \
+                    -H 'Authorization: token ${{ secrets.BALLERINA_BOT_TOKEN }}' \
+                    --data '{
+                        "event_type": "dependency-update"
+                    }'

.gitignore

@@ -11,6 +11,7 @@
 .mtj.tmp/
 
 # Package Files #
+!gradle/wrapper/gradle-wrapper.jar
 *.jar
 *.war
 *.nar
@@ -19,5 +20,21 @@
 *.tar.gz
 *.rar
 
+# System files
+.DS_Store
+
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+# IDE-related files
+.idea
+.code
+
+# Build Files
+.gradle
+target
+build
+
+# Ballerina
+velocity.log*
+*Ballerina.lock

README.md

@@ -1,2 +1,71 @@
-# module-ballerina-graphql
-This is the Ballerina GraphQL module, which is a part of Ballerina Language Standard Library
+Ballerina GraphQL Library
+===================
+
+The GraphQL library is one of the standard library modules of the <a target="_blank" href="https://ballerina.io/">Ballerina</a> language.
+
+## Building from the Source
+
+### Setting Up the Prerequisites
+
+1. Download and install Java SE Development Kit (JDK) version 11 (from one of the following locations).
+
+   * [Oracle](https://www.oracle.com/java/technologies/javase-jdk11-downloads.html)
+   * [OpenJDK](https://adoptopenjdk.net/)
+
+        > **Note:** Set the JAVA_HOME environment variable to the path name of the directory into which you installed JDK.
+
+2. Generate a Github access token with read package permissions, then set the following `env` variables:
+    ```
+   export packageUser=<Your GitHub Username>
+   export packagePAT=<GitHub Personal Access Token>
+    ```
+
+### Building the Source
+
+Execute the commands below to build from the source.
+
+1. To build the library:
+   ```    
+   ./gradlew clean build
+   ```
+
+2. To run the tests:
+   ```
+   ./gradlew clean test
+   ```
+
+3. To run a group of tests
+   ```
+   ./gradlew clean test -Pgroups=<test_group_names>
+   ```
+
+4. To build the module without the tests:
+   ```
+   ./gradlew clean build -x test
+   ```
+
+5. To debug module implementation:
+   ```
+   ./gradlew clean build -Pdebug=<port>
+   ```
+
+6. To debug the module with Ballerina language:
+   ```
+   ./gradlew clean build -PbalJavaDebug=<port>
+   ```
+
+## Contributing to Ballerina
+
+As an open source project, Ballerina welcomes contributions from the community.
+
+For more information, go to the [contribution guidelines](https://github.com/ballerina-platform/ballerina-lang/blob/master/CONTRIBUTING.md).
+
+## Code of Conduct
+
+All the contributors are encouraged to read the [Ballerina Code of Conduct](https://ballerina.io/code-of-conduct).
+
+## Useful Links
+
+* Discuss the code changes of the Ballerina project in [ballerina-dev@googlegroups.com](mailto:ballerina-dev@googlegroups.com).
+* Chat live with us via our [Slack channel](https://ballerina.io/community/slack/).
+* Post all technical questions on Stack Overflow with the [#ballerina](https://stackoverflow.com/questions/tagged/ballerina) tag.

build-config/checkstyle/build.gradle

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2020, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+plugins {
+    id "de.undercouch.download"
+}
+
+task downloadMultipleFiles(type: Download) {
+    src([
+            'https://raw.githubusercontent.com/wso2/code-quality-tools/v1.3/checkstyle/checkstyle.xml',
+            'https://raw.githubusercontent.com/wso2/code-quality-tools/v1.3/checkstyle/suppressions.xml'
+    ])
+    overwrite false
+    onlyIfNewer true
+    dest buildDir
+}
+
+jar {
+    enabled = false
+}
+
+clean {
+    enabled = false
+}
+
+artifacts.add('default', file("$project.buildDir/checkstyle.xml")) {
+    builtBy('downloadMultipleFiles')
+}
+
+artifacts.add('default', file("$project.buildDir/suppressions.xml")) {
+    builtBy('downloadMultipleFiles')
+}