feat:add zero protection.

spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/ConfigurationModifier.java

@@ -63,7 +63,9 @@ public class ConfigurationModifier implements PolarisConfigurationConfigModifier
 
 	@Override
 	public void modify(ConfigurationImpl configuration) {
-		if (!polarisConfigProperties.isEnabled()) {
+		configuration.getGlobal().getAPI().setReportEnable(false);
+
+		if (!polarisContextProperties.getEnabled() || !polarisConfigProperties.isEnabled()) {
 			return;
 		}
 		if (StringUtils.equalsIgnoreCase(polarisConfigProperties.getDataSource(), DATA_SOURCE_POLARIS)) {

spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/configdata/PolarisConfigDataLocationResolver.java

@@ -89,9 +89,16 @@ public class PolarisConfigDataLocationResolver implements
 		if (!location.hasPrefix(PREFIX)) {
 			return false;
 		}
-		return context.getBinder()
+
+		boolean contextEnabled = context.getBinder()
+				.bind("spring.cloud.polaris.enabled", Boolean.class)
+				.orElse(true);
+
+		boolean configEnabled = context.getBinder()
 				.bind("spring.cloud.polaris.config.enabled", Boolean.class)
 				.orElse(true);
+
+		return contextEnabled && configEnabled;
 	}
 
 	@Override
@@ -138,6 +145,10 @@ public class PolarisConfigDataLocationResolver implements
 			polarisContextProperties = new PolarisContextProperties();
 		}
 
+		if (!polarisContextProperties.getEnabled() || !polarisConfigProperties.isEnabled()) {
+			return Collections.emptyList();
+		}
+
 		// prepare and init earlier Polaris SDKContext to pull config files from remote.
 		try {
 			prepareAndInitEarlierPolarisSdkContext(resolverContext, polarisConfigProperties, polarisCryptoConfigProperties, polarisContextProperties);

spring-cloud-starter-tencent-polaris-contract/src/main/java/com/tencent/cloud/polaris/contract/PolarisContractReporter.java

@@ -22,6 +22,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import com.tencent.cloud.common.util.GzipUtil;
 import com.tencent.cloud.common.util.JacksonUtils;
 import com.tencent.cloud.polaris.PolarisDiscoveryProperties;
 import com.tencent.cloud.polaris.contract.config.PolarisContractProperties;
@@ -97,13 +98,16 @@ public class PolarisContractReporter implements ApplicationListener<ApplicationR
 					request.setVersion(polarisDiscoveryProperties.getVersion());
 					List<InterfaceDescriptor> interfaceDescriptorList = getInterfaceDescriptorFromSwagger(openAPI);
 					request.setInterfaceDescriptors(interfaceDescriptorList);
+					String jsonValue = JacksonUtils.serialize2Json(openAPI);
+					String serviceApiMeta = GzipUtil.compressBase64Encode(jsonValue, "utf-8");
+					request.setContent(serviceApiMeta);
 					ReportServiceContractResponse response = providerAPI.reportServiceContract(request);
 					LOG.info("Service contract [Namespace: {}. Name: {}. Service: {}. Protocol:{}. Version: {}. API counter: {}] is reported.",
 							request.getNamespace(), request.getName(), request.getService(), request.getProtocol(),
 							request.getVersion(), request.getInterfaceDescriptors().size());
 					if (LOG.isDebugEnabled()) {
-						String jsonValue = JacksonUtils.serialize2Json(openAPI);
 						LOG.debug("OpenApi json data: {}", jsonValue);
+						LOG.debug("OpenApi json base64 data: {}", serviceApiMeta);
 					}
 				}
 				else {

spring-cloud-starter-tencent-polaris-contract/src/main/java/com/tencent/cloud/polaris/contract/config/PolarisSwaggerAutoConfiguration.java

@@ -85,8 +85,8 @@ public class PolarisSwaggerAutoConfiguration {
 	public OpenAPI polarisOpenAPI() {
 		return new OpenAPI()
 				.info(new Info()
-						.title("Polaris Swagger API")
-						.description("This is to show polaris api description.")
+						.title("Polaris Contract")
+						.description("This is to show polaris contract description.")
 						.license(new License().name("BSD-3-Clause").url("https://opensource.org/licenses/BSD-3-Clause"))
 						.version("1.0.0"));
 	}

spring-cloud-starter-tencent-polaris-contract/src/main/resources/META-INF/spring.factories

@@ -1,4 +1,4 @@
 org.springframework.cloud.bootstrap.BootstrapConfiguration=\
-  com.tencent.cloud.polaris.contract.config.PolarisContractPropertiesAutoConfiguration
+  com.tencent.cloud.polaris.contract.config.PolarisContractPropertiesBootstrapConfiguration
 org.springframework.context.ApplicationListener=\
   com.tencent.cloud.polaris.contract.PolarisSwaggerApplicationListener

spring-cloud-starter-tencent-polaris-contract/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -1,2 +1,2 @@
 com.tencent.cloud.polaris.contract.config.PolarisSwaggerAutoConfiguration
-com.tencent.cloud.polaris.contract.config.PolarisContractProperties
+com.tencent.cloud.polaris.contract.config.PolarisContractPropertiesAutoConfiguration

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisRegistration.java

@@ -67,6 +67,7 @@ public class PolarisRegistration implements Registration {
 	private final List<PolarisRegistrationCustomizer> customizers;
 	private boolean registerEnabled = false;
 	private Map<String, String> metadata;
+	private Map<String, Map<String, String>> extendedMetadata;
 	private int port;
 	private String instanceId;
 
@@ -132,6 +133,8 @@ public class PolarisRegistration implements Registration {
 			this.metadata = instanceMetadata;
 		}
 
+		this.extendedMetadata = new HashMap<>();
+
 		// generate registerEnabled
 		if (null != polarisDiscoveryProperties) {
 			registerEnabled = polarisDiscoveryProperties.isRegisterEnabled();
@@ -217,6 +220,13 @@ public class PolarisRegistration implements Registration {
 		return metadata;
 	}
 
+	public Map<String, Map<String, String>> getExtendedMetadata() {
+		if (extendedMetadata == null) {
+			extendedMetadata = new HashMap<>();
+		}
+		return extendedMetadata;
+	}
+
 	@Override
 	public String getInstanceId() {
 		return instanceId;

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java

@@ -117,6 +117,7 @@ public class PolarisServiceRegistry implements ServiceRegistry<PolarisRegistrati
 		instanceRegisterRequest.setCampus(staticMetadataManager.getCampus());
 		instanceRegisterRequest.setTtl(polarisDiscoveryProperties.getHeartbeatInterval());
 		instanceRegisterRequest.setMetadata(registration.getMetadata());
+		instanceRegisterRequest.setExtendedMetadata(registration.getExtendedMetadata());
 		instanceRegisterRequest.setProtocol(polarisDiscoveryProperties.getProtocol());
 		instanceRegisterRequest.setVersion(polarisDiscoveryProperties.getVersion());
 		instanceRegisterRequest.setInstanceId(polarisDiscoveryProperties.getInstanceId());

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/GzipUtil.java

@@ -0,0 +1,84 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * 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.tencent.cloud.common.util;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Base64;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
+
+/**
+ * @author kysonli
+ * @date 2018/9/7 15:35
+ */
+public final class GzipUtil {
+
+	private GzipUtil() {
+	}
+
+	public static byte[] compress(String data, String charsetName) throws IOException {
+		ByteArrayOutputStream bos = new ByteArrayOutputStream();
+		GZIPOutputStream gzip = new GZIPOutputStream(bos);
+		gzip.write(data.getBytes(charsetName));
+		gzip.finish();
+		gzip.close();
+		byte[] ret = bos.toByteArray();
+		bos.close();
+		return ret;
+	}
+
+	public static String compressBase64Encode(String data, String charsetName) throws IOException {
+		byte[] compressData = compress(data, charsetName);
+		return new String(Base64.getEncoder().encode(compressData), charsetName);
+	}
+
+	public static String compressBase64Encode(byte[] byteData, String charsetName) throws IOException {
+		byte[] compressData = compress(new String(byteData, charsetName), charsetName);
+		return Base64.getEncoder().encodeToString(compressData);
+	}
+
+
+	public static byte[] decompress(byte[] zipData) throws IOException {
+		ByteArrayInputStream bis = new ByteArrayInputStream(zipData);
+		GZIPInputStream gzip = new GZIPInputStream(bis);
+		byte[] buf = new byte[256];
+		int num = -1;
+		ByteArrayOutputStream bos = new ByteArrayOutputStream();
+		while ((num = gzip.read(buf, 0, buf.length)) != -1) {
+			bos.write(buf, 0, num);
+		}
+		gzip.close();
+		bis.close();
+		byte[] ret = bos.toByteArray();
+		bos.flush();
+		bos.close();
+		return ret;
+	}
+
+	public static String base64DecodeDecompress(String data, String charsetName) throws IOException {
+		byte[] base64DecodeData = Base64.getDecoder().decode(data);
+		return new String(decompress(base64DecodeData), charsetName);
+	}
+
+	public static String base64DecodeDecompress(String data) throws IOException {
+		return base64DecodeDecompress(data, "utf-8");
+	}
+
+}

spring-cloud-tencent-polaris-context/src/main/java/com/tencent/cloud/polaris/context/config/PolarisContextProperties.java

@@ -65,7 +65,7 @@ public class PolarisContextProperties {
 	 * If polaris enabled.
 	 */
 	@Value("${spring.cloud.polaris.enabled:#{'true'}}")
-	private Boolean enabled;
+	private Boolean enabled = true;
 
 	/**
 	 * polaris namespace.