Added gradle build configuration for endpoints-framework-v2/backend

appengine/endpoints-frameworks-v2/backend/README.md

@@ -3,7 +3,9 @@
 This sample demonstrates how to use Google Cloud Endpoints Frameworks using
 Java on App Engine Standard.
 
-## Adding the project ID to the sample API code
+## Build with Maven
+
+### Adding the project ID to the sample API code
 
 You must add the project ID obtained when you created your project to the
 sample's `pom.xml` before you can deploy the code.
@@ -21,19 +23,19 @@ your project ID.
 
 0. Save your changes.
 
-## Building the sample project
+### Building the sample project
 
 To build the project:
 
     mvn clean package
 
-## Generating the openapi.json file
+### Generating the openapi.json file
 
 To generate the required configuration file `openapi.json`:
 
     mvn exec:java -DGetSwaggerDoc
 
-## Deploying the sample API to App Engine
+### Deploying the sample API to App Engine
 
 To deploy the sample API:
 
@@ -51,7 +53,92 @@ To deploy the sample API:
 
 0. Wait for the upload to finish.
 
-## Sending a request to the sample API
+### Sending a request to the sample API
+
+After you deploy the API and its configuration file, you can send requests
+to the API.
+
+To send a request to the API, from a command line, invoke the following `cURL`
+command:
+
+     curl \
+         -H "Content-Type: application/json" \
+         -X POST \
+         -d '{"message":"echo"}' \
+         https://$PROJECT_ID.appspot.com/_ah/api/echo/v1/echo
+
+You will get a 200 response with the following data:
+
+    {
+     "message": "echo"
+    }
+
+## Build with gradle
+
+### Adding the project ID to the sample API code
+
+0. Edit the file `build.gradle`.
+
+0. For `def projectId = 'YOUR_PROJECT_ID'`, replace the value `YOUR_PROJECT_ID` with
+your project ID.
+
+0. Edit the file `src/main/java/com/example/echo/Echo.java
+
+0. Replace the value `YOUR-PROJECT-ID` with your project ID.
+
+0. Save your changes.
+
+### Building the sample project
+
+To build the project on unix-based systems:
+
+    ./gradlew build
+
+Note for windows user: Use `gradlew.bat` instead of `./gradlew`
+
+<details>
+ <summary>more details</summary>
+ The project contains the standard java and war plugins and in addition to that it contains the following plugins:
+ [endpoints-framework-gradle-plugin](https://github.com/GoogleCloudPlatform/endpoints-framework-gradle-plugin "endpoints-framework-gradle-plugin") for the endpoint related tasks and
+ [appengine-gradle-plugin](https://github.com/GoogleCloudPlatform/app-gradle-plugin "appengine-gradle-plugin") for the appengine standard related tasks.
+</details>
+
+### Generating the openapi.json file
+
+To generate the required configuration file `openapi.json`:
+
+    ./gradlew endpointsOpenApiDocs
+
+This results in a file in build/endpointsOpenApiDocs/openapi.json
+
+### Deploying the sample API to App Engine
+
+To deploy the sample API:
+
+0. Invoke the `gcloud` command to deploy the API configuration file:
+
+         gcloud service-management deploy build/endpointsOpenApiDocs/openapi.json
+
+0. Deploy the API implementation code by invoking:
+
+         ./gradlew appengineDeploy
+
+    The first time you upload a sample app, you may be prompted to authorize the
+    deployment. Follow the prompts: when you are presented with a browser window
+    containing a code, copy it to the terminal window.
+
+    <details>
+    <summary>ERROR: (gcloud.app.deploy) The current Google Cloud project [...] does not contain an App Engine application.</summary>
+    If you create a fresh cloud project that doesn't contain a appengine application you may receive this Error:
+
+    ERROR: (gcloud.app.deploy) The current Google Cloud project [...] does not contain an App Engine application. Use `gcloud app create` to initialize an App Engine application within the project.
+
+    In that case just execute `gcloud app create`, you will be asked to select a region and the app will be created. Then run gradle appengineDeploy again.
+    </details>
+
+0. Wait for the upload to finish.
+
+### Sending a request to the sample API
 
 After you deploy the API and its configuration file, you can send requests
 to the API.

appengine/endpoints-frameworks-v2/backend/build.gradle

@@ -0,0 +1,55 @@
+import org.apache.tools.ant.filters.ReplaceTokens
+
+buildscript {
+  repositories {
+    mavenCentral()
+  }
+
+  dependencies {
+    classpath 'com.google.cloud.tools:endpoints-framework-gradle-plugin:1.0.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:1.3.2'
+  }
+}
+
+repositories {
+    maven {
+        url 'https://maven-central.storage.googleapis.com'
+    }
+    jcenter()
+    mavenCentral()
+}
+
+task wrapper(type: Wrapper) {
+    gradleVersion = '3.5'
+}
+
+def projectId = 'YOUR_PROJECT_ID'
+
+apply plugin: 'java'
+apply plugin: 'war'
+apply plugin: 'com.google.cloud.tools.endpoints-framework-server'
+apply plugin: 'com.google.cloud.tools.appengine'
+
+dependencies {
+    compile 'com.google.endpoints:endpoints-framework:2.0.7'
+    compile 'com.google.endpoints:endpoints-management-control-appengine:1.0.3'
+    compile 'com.google.endpoints:endpoints-framework-auth:1.0.3'
+}
+
+endpointsServer {
+  // Endpoints Framework Plugin server-side configuration
+  hostname = "echo-api.endpoints.${projectId}.cloud.goog"
+}
+
+sourceCompatibility = 1.7  // App Engine Standard uses Java 7
+targetCompatibility = 1.7  // App Engine Standard uses Java 7
+
+// this replaces the ${endpoints.project.id} in appengine-web.xml and web.xml
+task replaceProjectId(type: Copy) {
+    from 'src/main/webapp/WEB-INF/'
+    include '*.xml'
+    into 'build/exploded-backend/WEB-INF'
+    expand(endpoints:[project:[id:projectId]])
+    filteringCharset = 'UTF-8'
+}
+assemble.dependsOn replaceProjectId

appengine/endpoints-frameworks-v2/backend/gradlew

@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"