initial commit

spring-cloud-function-stream/src/main/java/org/springframework/cloud/function/stream/StreamApplication.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 org.springframework.cloud.function.stream;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Mark Fisher
+ */
+@SpringBootApplication
+public class StreamApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(StreamApplication.class, args);
+	}
+}

spring-cloud-function-stream/src/main/java/org/springframework/cloud/function/stream/StreamConfiguration.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 org.springframework.cloud.function.stream;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.function.invoker.AbstractFunctionInvoker;
+import org.springframework.cloud.function.registry.FunctionRegistry;
+import org.springframework.cloud.function.registry.InMemoryFunctionRegistry;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+import org.springframework.cloud.stream.messaging.Processor;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * @author Mark Fisher
+ */
+@EnableBinding(Processor.class)
+@EnableConfigurationProperties(StreamConfigurationProperties.class)
+public class StreamConfiguration {
+
+	@Autowired
+	private StreamConfigurationProperties properties;
+
+	@Bean
+	public FunctionRegistry registry() {
+		FunctionRegistry registry = new InMemoryFunctionRegistry();
+		registry.register(properties.getName(), properties.getCode());
+		return registry;
+	}
+
+	@Bean
+	public AbstractFunctionInvoker<?,?> invoker() {
+		return new StreamListeningFunctionInvoker(registry().lookup(properties.getName()));
+	}
+}

spring-cloud-function-stream/src/main/java/org/springframework/cloud/function/stream/StreamConfigurationProperties.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 org.springframework.cloud.function.stream;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * @author Mark Fisher
+ */
+@ConfigurationProperties(prefix = "function")
+public class StreamConfigurationProperties {
+
+	private String name;
+
+	private String code;
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getCode() {
+		return code;
+	}
+
+	public void setCode(String code) {
+		this.code = code;
+	}
+}

spring-cloud-function-stream/src/main/java/org/springframework/cloud/function/stream/StreamListeningFunctionInvoker.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 org.springframework.cloud.function.stream;
+
+import java.util.function.Function;
+
+import org.springframework.cloud.function.invoker.AbstractFunctionInvoker;
+import org.springframework.cloud.stream.annotation.Input;
+import org.springframework.cloud.stream.annotation.Output;
+import org.springframework.cloud.stream.annotation.StreamListener;
+import org.springframework.cloud.stream.messaging.Processor;
+
+import reactor.core.publisher.Flux;
+
+/**
+ * @author Mark Fisher
+ */
+public class StreamListeningFunctionInvoker extends AbstractFunctionInvoker<Flux<Object>, Flux<Object>> {
+
+	public StreamListeningFunctionInvoker(Function<Flux<Object>, Flux<Object>> function) {
+		super(function);
+	}
+
+	@StreamListener
+	@Output(Processor.OUTPUT)
+	public Flux<Object> handle(@Input(Processor.INPUT) Flux<Object> input) {
+		return this.doInvoke(input);
+	}
+}