#594 Added mlDeployToReplica

Author: rjrudin

build.gradle

@@ -4,7 +4,7 @@ plugins {
 	id "signing"
 
   id "com.github.jk1.dependency-license-report" version "1.3"
-  id "com.gradle.plugin-publish" version "0.11.0"
+  id "com.gradle.plugin-publish" version "0.15.0"
 	id "java-gradle-plugin"
 
 	id "net.saliman.properties" version "1.5.1"
@@ -29,7 +29,7 @@ repositories {
 dependencies {
   implementation gradleApi()
 	implementation localGroovy()
-	api "com.marklogic:ml-app-deployer:4.2.1"
+	api "com.marklogic:ml-app-deployer:4.3.0-SNAPSHOT"
 	implementation "com.marklogic:mlcp-util:1.0"
 	implementation "com.marklogic:marklogic-data-movement-components:2.3.0"
 	implementation "commons-io:commons-io:2.8.0"

src/main/groovy/com/marklogic/gradle/MarkLogicPlugin.groovy

@@ -113,6 +113,10 @@ class MarkLogicPlugin implements Plugin<Project> {
 		project.task("mlRedeploy", group: deployGroup, dependsOn: ["mlClearModulesDatabase", "mlDeploy", "mlDeleteResourceTimestampsFile"], description: "Clears the modules database and then deploys the application")
 		project.task("mlDeleteResourceTimestampsFile", type: DeleteResourceTimestampsFileTask, group: deployGroup, description: "Delete the properties file in the build directory (stored there by default) that keeps track of when each resource was last deployed; the file path can be overridden by setting the filePath property of this class")
 		project.task("mlPreviewDeploy", type: PreviewDeployTask, group: deployGroup, description: "Preview a deployment without making any changes")
+		project.task("mlDeployToReplica", type: DeployToReplicaTask, group: deployGroup,
+			description: "Deploys application resources in the same manner as mlDeploy, but will not deploy anything that " +
+				"involves writing data to a database - such as modules, schemas, and triggers - thus making it safe for use " +
+				"when deploying an application to a replica cluster")
 
 		String adminGroup = "ml-gradle Admin"
 		project.task("mlInit", type: InitTask, group: adminGroup, description: "Perform a one-time initialization of a MarkLogic server; uses the properties 'mlLicenseKey' and 'mlLicensee'")

src/main/groovy/com/marklogic/gradle/task/DeployToReplicaTask.groovy

@@ -0,0 +1,29 @@
+package com.marklogic.gradle.task
+
+import com.marklogic.appdeployer.command.Command
+import com.marklogic.appdeployer.command.CommandMapBuilder
+import com.marklogic.appdeployer.impl.SimpleAppDeployer
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.Optional
+import org.gradle.api.tasks.TaskAction
+
+import java.util.function.Supplier
+
+class DeployToReplicaTask extends MarkLogicTask {
+
+	@Input
+	@Optional
+	// Intended to allow for DHF, or even a user, to provide a custom list of commands.
+	// A user may wish to do this so that e.g. security commands are not included, in case the Security database is
+	// being replicated.
+	Supplier<List<Command>> commandListSupplier
+
+	@TaskAction
+	void deployToReplica() {
+		List<Command> commands = commandListSupplier != null ?
+			commandListSupplier.get() :
+			new CommandMapBuilder().getCommandsForReplicaCluster()
+
+		new SimpleAppDeployer(commands).deploy(getAppConfig())
+	}
+}