Upgrade to Gradle 8.3

Examples are updated to use the new version as well, which wasn't done
last time in f3f4ed4ef. That noticed some things that were missed
before.

examples/build.gradle

@@ -78,11 +78,13 @@ def createStartScripts(String mainClassName) {
         outputDir = new File(project.buildDir, 'tmp/scripts/' + name)
         classpath = startScripts.classpath
     }
+    application {
         applicationDistribution.into('bin') {
             from(newTask)
             fileMode = 0755
         }
     }
+}
 
 createStartScripts('io.grpc.examples.advanced.HelloJsonClient')
 createStartScripts('io.grpc.examples.advanced.HelloJsonServer')

examples/example-alts/build.gradle

@@ -1,8 +1,7 @@
 plugins {
     // Provide convenience executables for trying out the examples.
     id 'application'
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
 }
@@ -71,8 +70,10 @@ task helloWorldAltsClient(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(helloWorldAltsServer)
         from(helloWorldAltsClient)
         fileMode = 0755
     }
+}

examples/example-debug/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'application' // Provide convenience executables for trying out the examples.
     id 'java'
 
-    id "com.google.protobuf" version "0.8.17"
+    id "com.google.protobuf" version "0.9.4"
 
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
@@ -71,8 +71,10 @@ task HostnameDebuggableServer(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(HelloWorldDebuggableClient)
         from(HostnameDebuggableServer)
         fileMode = 0755
     }
+}

examples/example-gauth/build.gradle

@@ -1,8 +1,7 @@
 plugins {
     // Provide convenience executables for trying out the examples.
     id 'application'
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
 }
@@ -69,7 +68,9 @@ task googleAuthClient(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(googleAuthClient)
         fileMode = 0755
     }
+}

examples/example-gcp-observability/build.gradle

@@ -1,8 +1,7 @@
 plugins {
     // Provide convenience executables for trying out the examples.
     id 'application'
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
     id 'java'
@@ -63,8 +62,10 @@ task ObservabilityHelloWorldClient(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(ObservabilityHelloWorldServer)
         from(ObservabilityHelloWorldClient)
         fileMode = 0755
     }
+}

examples/example-hostname/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'application' // Provide convenience executables for trying out the examples.
     id 'java'
 
-    id "com.google.protobuf" version "0.8.17"
+    id "com.google.protobuf" version "0.9.4"
     id 'com.google.cloud.tools.jib' version '3.1.4' // For releasing to Docker Hub
 }
 

examples/example-jwt-auth/build.gradle

@@ -1,8 +1,7 @@
 plugins {
     // Provide convenience executables for trying out the examples.
     id 'application'
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
 }
@@ -79,8 +78,10 @@ task hellowWorldJwtAuthClient(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(hellowWorldJwtAuthServer)
         from(hellowWorldJwtAuthClient)
         fileMode = 0755
     }
+}

examples/example-orca/build.gradle

@@ -1,7 +1,6 @@
 plugins {
     id 'application' // Provide convenience executables for trying out the examples.
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
     id 'java'
@@ -57,8 +56,10 @@ task CustomBackendMetricsServer(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(CustomBackendMetricsClient)
         from(CustomBackendMetricsServer)
         fileMode = 0755
     }
+}

examples/example-reflection/build.gradle

@@ -1,7 +1,6 @@
 plugins {
     id 'application' // Provide convenience executables for trying out the examples.
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
     id 'java'
@@ -50,7 +49,9 @@ task ReflectionServer(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(ReflectionServer)
         fileMode = 0755
     }
+}

examples/example-servlet/build.gradle

@@ -1,6 +1,5 @@
 plugins {
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
     id 'war'

examples/example-tls/build.gradle

@@ -1,8 +1,7 @@
 plugins {
     // Provide convenience executables for trying out the examples.
     id 'application'
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
 }
@@ -71,8 +70,10 @@ task helloWorldTlsClient(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(helloWorldTlsServer)
         from(helloWorldTlsClient)
         fileMode = 0755
     }
+}

examples/example-xds/build.gradle

@@ -1,7 +1,6 @@
 plugins {
     id 'application' // Provide convenience executables for trying out the examples.
-    // ASSUMES GRADLE 5.6 OR HIGHER. Use plugin version 0.8.10 with earlier gradle versions
-    id 'com.google.protobuf' version '0.8.17'
+    id 'com.google.protobuf' version '0.9.4'
     // Generate IntelliJ IDEA's .idea & .iml project files
     id 'idea'
     id 'java'
@@ -63,8 +62,10 @@ task xdsHelloWorldServer(type: CreateStartScripts) {
     classpath = startScripts.classpath
 }
 
+application {
     applicationDistribution.into('bin') {
         from(xdsHelloWorldClient)
         from(xdsHelloWorldServer)
         fileMode = 0755
     }
+}

examples/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists