polish #761 update pkg name & maven coordinate for Greenwich

spring-cloud-alibaba-seata/src/main/java/com/alibaba/cloud/seata/rest/SeataRestTemplateAutoConfiguration.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+/*
+ * Copyright (C) 2019 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 com.alibaba.cloud.seata.rest;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import javax.annotation.PostConstruct;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.ClientHttpRequestInterceptor;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * @author xiaojing
+ */
+
+@Configuration
+public class SeataRestTemplateAutoConfiguration {
+
+	@Bean
+	public SeataRestTemplateInterceptor seataRestTemplateInterceptor() {
+		return new SeataRestTemplateInterceptor();
+	}
+
+	@Autowired(required = false)
+	private Collection<RestTemplate> restTemplates;
+
+	@Autowired
+	private SeataRestTemplateInterceptor seataRestTemplateInterceptor;
+
+	@PostConstruct
+	public void init() {
+		if (this.restTemplates != null) {
+			for (RestTemplate restTemplate : restTemplates) {
+				List<ClientHttpRequestInterceptor> interceptors = new ArrayList<ClientHttpRequestInterceptor>(
+						restTemplate.getInterceptors());
+				interceptors.add(this.seataRestTemplateInterceptor);
+				restTemplate.setInterceptors(interceptors);
+			}
+		}
+	}
+
+}

spring-cloud-alibaba-seata/src/main/java/com/alibaba/cloud/seata/rest/SeataRestTemplateInterceptor.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 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 com.alibaba.cloud.seata.rest;
+
+import java.io.IOException;
+
+import org.springframework.http.HttpRequest;
+import org.springframework.http.client.ClientHttpRequestExecution;
+import org.springframework.http.client.ClientHttpRequestInterceptor;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.http.client.support.HttpRequestWrapper;
+import org.springframework.util.StringUtils;
+
+import io.seata.core.context.RootContext;
+
+/**
+ * @author xiaojing
+ */
+public class SeataRestTemplateInterceptor implements ClientHttpRequestInterceptor {
+	@Override
+	public ClientHttpResponse intercept(HttpRequest httpRequest, byte[] bytes,
+			ClientHttpRequestExecution clientHttpRequestExecution) throws IOException {
+		HttpRequestWrapper requestWrapper = new HttpRequestWrapper(httpRequest);
+
+		String xid = RootContext.getXID();
+
+		if (!StringUtils.isEmpty(xid)) {
+			requestWrapper.getHeaders().add(RootContext.KEY_XID, xid);
+		}
+		return clientHttpRequestExecution.execute(requestWrapper, bytes);
+	}
+}