SCT-12 Creates the SCSt sink that can launch tasks.

resolves  spring-cloud/spring-cloud-task#12

spring-cloud-task-samples/taskprocessor/src/main/java/io/spring/TaskProcessor.java

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+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * 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.
+ */
+
+package io.spring;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+import org.springframework.cloud.stream.messaging.Processor;
+import org.springframework.cloud.task.launcher.TaskLaunchRequest;
+import org.springframework.integration.annotation.Transformer;
+import org.springframework.messaging.support.GenericMessage;
+import org.springframework.util.StringUtils;
+
+/**
+ * A processor that takes the maven repository coordinates and datasource configuration
+ * for a task and sends a {@link TaskLaunchRequest} message to a task sink.
+ *
+ * @author Glenn Renfro
+ */
+@EnableBinding(Processor.class)
+@EnableConfigurationProperties(TaskProcessorProperties.class)
+public class TaskProcessor {
+
+	@Autowired
+	private TaskProcessorProperties processorProperties;
+
+	@Transformer(inputChannel = Processor.INPUT, outputChannel = Processor.OUTPUT)
+	public Object setupRequest(String message) {
+		Map<String, String> properties = new HashMap<String,String>();
+		if(StringUtils.hasText(processorProperties.getDataSourceUrl())){
+			properties.put("spring_datasource_url",processorProperties.getDataSourceUrl());
+		}
+		if(StringUtils.hasText(processorProperties.getDataSourceDriverClassName())){
+			properties.put("spring_datasource_driverClassName",processorProperties.getDataSourceDriverClassName());
+		}
+		if(StringUtils.hasText(processorProperties.getDataSourceUserName())){
+			properties.put("spring_datasource_username",processorProperties.getDataSourceUserName());
+		}
+		if(StringUtils.hasText(processorProperties.getDataSourcePassword())){
+			properties.put("spring_datasource_password",processorProperties.getDataSourcePassword());
+		}
+		properties.put("payload", message);
+
+		TaskLaunchRequest request = new TaskLaunchRequest(processorProperties.getArtifact(),
+				processorProperties.getGroup(), processorProperties.getVersion(), processorProperties.getExtension(),
+				processorProperties.getClassifiers(), properties);
+
+		return new GenericMessage<TaskLaunchRequest>(request);
+	}
+
+}

spring-cloud-task-samples/taskprocessor/src/main/java/io/spring/TaskProcessorApplication.java

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+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * 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.
+ */
+
+package io.spring;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Glenn Renfro
+ */
+@SpringBootApplication
+public class TaskProcessorApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(TaskProcessorApplication.class, args);
+	}
+}

spring-cloud-task-samples/taskprocessor/src/main/java/io/spring/TaskProcessorProperties.java

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+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * 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.
+ */
+
+package io.spring;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * @author Glenn Renfro
+ */
+@ConfigurationProperties
+public class TaskProcessorProperties {
+
+	private static final String DEFAULT_GROUP = "io.spring";
+
+	private static final String DEFAULT_ARTIFACT = "timestamp-task";
+
+	private static final String DEFAULT_VERSION = "1.0.0.BUILD-SNAPSHOT";
+
+	private static final String DEFAULT_EXTENSION = "jar";
+
+
+	private String group = DEFAULT_GROUP;
+
+	private String artifact = DEFAULT_ARTIFACT;
+
+	private String version = DEFAULT_VERSION;
+
+	private String extension = DEFAULT_EXTENSION;
+
+	private String classifiers;
+
+	private String dataSourceUrl;
+
+	private String dataSourceDriverClassName;
+
+	private String dataSourceUserName;
+
+	private String dataSourcePassword;
+
+
+	public String getExtension() {
+		return extension;
+	}
+
+	public void setExtension(String extension) {
+		this.extension = extension;
+	}
+
+	public String getClassifiers() {
+		return classifiers;
+	}
+
+	public void setClassifiers(String classifiers) {
+		this.classifiers = classifiers;
+	}
+
+	public String getDataSourceUrl() {
+		return dataSourceUrl;
+	}
+
+	public void setDataSourceUrl(String dataSourceUrl) {
+		this.dataSourceUrl = dataSourceUrl;
+	}
+
+	public String getDataSourceDriverClassName() {
+		return dataSourceDriverClassName;
+	}
+
+	public void setDataSourceDriverClassName(String dataSourceDriverClassName) {
+		this.dataSourceDriverClassName = dataSourceDriverClassName;
+	}
+
+	public String getDataSourceUserName() {
+		return dataSourceUserName;
+	}
+
+	public void setDataSourceUserName(String dataSourceUserName) {
+		this.dataSourceUserName = dataSourceUserName;
+	}
+
+	public String getDataSourcePassword() {
+		return dataSourcePassword;
+	}
+
+	public void setDataSourcePassword(String dataSourcePassword) {
+		this.dataSourcePassword = dataSourcePassword;
+	}
+
+	public void setGroup(String group) {
+		this.group = group;
+	}
+
+	public String getGroup() {
+		return group;
+	}
+
+	public String getArtifact() {
+		return artifact;
+	}
+
+	public void setArtifact(String artifact) {
+		this.artifact = artifact;
+	}
+
+	public String getVersion() {
+		return version;
+	}
+
+	public void setVersion(String version) {
+		this.version = version;
+	}
+}