Add sample for Redis metric exporter

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/ExportProperties.java

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+/*
+ * Copyright 2012-2015 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 sample.metrics.redis;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+@ConfigurationProperties("metrics.export")
+class ExportProperties {
+
+	private String prefix = "spring.metrics";
+	private String key = "keys.spring.metrics";
+
+	public String getPrefix() {
+		return this.prefix;
+	}
+
+	public void setPrefix(String prefix) {
+		this.prefix = prefix;
+	}
+
+	public String getKey() {
+		return this.key;
+	}
+
+	public void setKey(String key) {
+		this.key = key;
+	}
+
+}

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/HelloWorldService.java

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+/*
+ * Copyright 2012-2015 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 sample.metrics.redis;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+@Component
+@ConfigurationProperties(prefix = "service", ignoreUnknownFields = false)
+public class HelloWorldService {
+
+	private String name = "World";
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getHelloMessage() {
+		return "Hello " + this.name;
+	}
+
+}

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/SampleController.java

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+/*
+ * Copyright 2012-2015 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 sample.metrics.redis;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.hibernate.validator.constraints.NotBlank;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Description;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+@Description("A controller for handling requests for hello messages")
+public class SampleController {
+
+	@Autowired
+	private HelloWorldService helloWorldService;
+
+	@RequestMapping(value = "/", method = RequestMethod.GET)
+	@ResponseBody
+	public Map<String, String> hello() {
+		return Collections.singletonMap("message",
+				this.helloWorldService.getHelloMessage());
+	}
+
+	protected static class Message {
+
+		@NotBlank(message = "Message value cannot be empty")
+		private String value;
+
+		public String getValue() {
+			return this.value;
+		}
+
+		public void setValue(String value) {
+			this.value = value;
+		}
+	}
+
+}

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/SampleRedisExportApplication.java

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+/*
+ * Copyright 2012-2015 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 sample.metrics.redis;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.actuate.metrics.repository.redis.RedisMetricRepository;
+import org.springframework.boot.actuate.metrics.writer.MetricWriter;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+
+@SpringBootApplication
+@EnableConfigurationProperties(ExportProperties.class)
+public class SampleRedisExportApplication {
+
+	@Autowired
+	private ExportProperties export;
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleRedisExportApplication.class, args);
+	}
+
+	@Bean
+	public MetricWriter redisMetricWriter(RedisConnectionFactory connectionFactory) {
+		return new RedisMetricRepository(connectionFactory, this.export.getPrefix(),
+				this.export.getKey());
+	}
+
+}

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/resources/application.properties

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+service.name: Phil
+metrics.export.prefix: ${spring.application.name:application}:${random.value:0000}

spring-boot-samples/spring-boot-sample-metrics-redis/src/test/java/sample/metrics/redis/SampleRedisExportApplicationTests.java

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+/*
+ * Copyright 2012-2015 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 sample.metrics.redis;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.IntegrationTest;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+/**
+ * Basic integration tests for {@link SampleRedisExportApplication}.
+ *
+ * @author Dave Syer
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = SampleRedisExportApplication.class)
+@WebAppConfiguration
+@IntegrationTest("server.port=0")
+@DirtiesContext
+public class SampleRedisExportApplicationTests {
+
+	@Test
+	public void contextLoads() {
+
+	}
+
+}