Fix the issue of repeatedly passing one-time key 。

spring-cloud-starter-tencent-metadata-transfer/src/main/java/com/tencent/cloud/metadata/core/DecodeTransferMetadataServletFilter.java

@@ -36,6 +36,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import org.springframework.core.annotation.Order;
+import org.springframework.lang.NonNull;
 import org.springframework.util.StringUtils;
 import org.springframework.web.filter.OncePerRequestFilter;
 
@@ -53,8 +54,8 @@ public class DecodeTransferMetadataServletFilter extends OncePerRequestFilter {
 	private static final Logger LOG = LoggerFactory.getLogger(DecodeTransferMetadataServletFilter.class);
 
 	@Override
-	protected void doFilterInternal(HttpServletRequest httpServletRequest,
+	protected void doFilterInternal(@NonNull HttpServletRequest httpServletRequest,
-			HttpServletResponse httpServletResponse, FilterChain filterChain)
+			@NonNull HttpServletResponse httpServletResponse, FilterChain filterChain)
 			throws ServletException, IOException {
 		Map<String, String> internalTransitiveMetadata = getInternalTransitiveMetadata(httpServletRequest);
 		Map<String, String> customTransitiveMetadata = CustomTransitiveMetadataResolver.resolve(httpServletRequest);

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/constant/MetadataConstant.java

@@ -53,7 +53,7 @@ public final class MetadataConstant {
 	/**
 	 * internal metadata disposable status key.
 	 */
-	public static final String INTERNAL_METADATA_DISPOSABLE = "internal-disposable-status";
+	public static final String INTERNAL_METADATA_DISPOSABLE = "internal-metadata-disposable-status";
 
 	/**
 	 * Order of filter, interceptor, ...

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/MetadataContextHolder.java

@@ -22,6 +22,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
+import java.util.Set;
 
 import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
 import com.tencent.cloud.common.util.ApplicationContextAwareUtils;
@@ -31,12 +32,9 @@ import org.slf4j.LoggerFactory;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
 
-import static com.tencent.cloud.common.constant.ContextConstant.UTF_8;
 import static com.tencent.cloud.common.constant.MetadataConstant.INTERNAL_METADATA_DISPOSABLE;
 import static com.tencent.cloud.common.util.JacksonUtils.deserialize2Map;
 import static com.tencent.cloud.common.util.JacksonUtils.serialize2Json;
-import static java.net.URLDecoder.decode;
-import static java.net.URLEncoder.encode;
 
 /**
  * Metadata Context Holder.
@@ -103,17 +101,27 @@ public final class MetadataContextHolder {
 		// Save transitive metadata to ThreadLocal.
 		if (!CollectionUtils.isEmpty(dynamicTransitiveMetadata)) {
 
-			// processing disposable keys
+			// Check local static metadata .
-			if (dynamicTransitiveMetadata.containsKey(INTERNAL_METADATA_DISPOSABLE)) {
+			Map<String, String> localTransitives = metadataContext.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
+			String localDisposable = localTransitives.get(INTERNAL_METADATA_DISPOSABLE);
+			Map<String, Boolean> localValidDisposables = new HashMap<>();
+			if (StringUtils.hasText(localDisposable)) {
+				Set<String> disposables = deserialize2Map(localDisposable).keySet();
+				for (String disposable : disposables) {
+					localValidDisposables.put(disposable, localTransitives.containsKey(disposable));
+				}
+			}
+
+			// processing disposable keys .
 			String disposableKeyStatus = dynamicTransitiveMetadata.get(INTERNAL_METADATA_DISPOSABLE);
-				try {
 			if (StringUtils.hasText(disposableKeyStatus)) {
-						Map<String, String> keyStatus = deserialize2Map(decode(disposableKeyStatus, UTF_8));
+				Map<String, String> keyStatus = deserialize2Map(disposableKeyStatus);
 				Iterator<Map.Entry<String, String>> it = keyStatus.entrySet().iterator();
 				while (it.hasNext()) {
 					Map.Entry<String, String> entry = it.next();
 					String key = entry.getKey();
 					boolean status = Boolean.parseBoolean(entry.getValue());
+					if (!localValidDisposables.containsKey(key)) {
 						if (!status) {
 							keyStatus.put(key, "true");
 						}
@@ -123,24 +131,22 @@ public final class MetadataContextHolder {
 							it.remove();
 						}
 					}
-						// reset
+					else {
-						dynamicTransitiveMetadata.put(INTERNAL_METADATA_DISPOSABLE, encode(serialize2Json(keyStatus), UTF_8));
+						// removed disposable key
-					}
+						dynamicTransitiveMetadata.remove(key);
+						keyStatus.put(key, "false");
 					}
-				catch (Exception e) {
-					LOGGER.error("Runtime system does not support utf-8 coding.", e);
 				}
-
+				// reset
+				dynamicTransitiveMetadata.put(INTERNAL_METADATA_DISPOSABLE, serialize2Json(keyStatus));
 			}
 
-			Map<String, String> staticTransitiveMetadata =
+			Map<String, String> staticTransitiveMetadata = metadataContext.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
-					metadataContext.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
 			Map<String, String> mergedTransitiveMetadata = new HashMap<>();
 			mergedTransitiveMetadata.putAll(staticTransitiveMetadata);
 			mergedTransitiveMetadata.putAll(dynamicTransitiveMetadata);
 
-			metadataContext.putFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE,
+			metadataContext.putFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE, Collections.unmodifiableMap(mergedTransitiveMetadata));
-					Collections.unmodifiableMap(mergedTransitiveMetadata));
 		}
 		MetadataContextHolder.set(metadataContext);
 	}

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/StaticMetadataManager.java

@@ -18,7 +18,6 @@
 
 package com.tencent.cloud.common.metadata;
 
-import java.io.UnsupportedEncodingException;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -33,10 +32,8 @@ import org.slf4j.LoggerFactory;
 
 import org.springframework.util.CollectionUtils;
 
-import static com.tencent.cloud.common.constant.ContextConstant.UTF_8;
 import static com.tencent.cloud.common.constant.MetadataConstant.INTERNAL_METADATA_DISPOSABLE;
 import static com.tencent.cloud.common.util.JacksonUtils.serialize2Json;
-import static java.net.URLEncoder.encode;
 
 /**
  * manage metadata from env/config file/custom spi.
@@ -203,12 +200,7 @@ public class StaticMetadataManager {
 		mergedTransitiveMetadataResult.putAll(customSPITransitiveMetadata);
 
 		// append disposable status
-		try {
+		mergedTransitiveMetadataResult.put(INTERNAL_METADATA_DISPOSABLE, serialize2Json(disposableStatusMetadata));
-			mergedTransitiveMetadataResult.put(INTERNAL_METADATA_DISPOSABLE, encode(serialize2Json(disposableStatusMetadata), UTF_8));
-		}
-		catch (UnsupportedEncodingException e) {
-			LOGGER.error("Runtime system does not support utf-8 coding.", e);
-		}
 
 		this.mergedStaticTransitiveMetadata = Collections.unmodifiableMap(mergedTransitiveMetadataResult);
 	}

spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeController.java

@@ -44,12 +44,12 @@ public class MetadataCalleeController {
 	@Value("${server.port:0}")
 	private int port;
 
-	private final MetadataCallee2Service metadataCallee2Service;
+	private final MetadataCalleeService2 metadataCalleeService2;
 
 	private final RestTemplate restTemplate;
 
-	public MetadataCalleeController(MetadataCallee2Service metadataCallee2Service, RestTemplate restTemplate) {
+	public MetadataCalleeController(MetadataCalleeService2 metadataCalleeService2, RestTemplate restTemplate) {
-		this.metadataCallee2Service = metadataCallee2Service;
+		this.metadataCalleeService2 = metadataCalleeService2;
 		this.restTemplate = restTemplate;
 	}
 
@@ -66,7 +66,13 @@ public class MetadataCalleeController {
 				"http://MetadataCalleeService2/metadata/service/callee2/info",
 				Map.class);
 		calleeMetadata.forEach((key, value) -> {
-			LOG.info("Callee2 Metadata (Key-Value): {} : {}", key, value);
+			LOG.info("RestTemplate Callee2 Metadata (Key-Value): {} : {}", key, value);
+		});
+
+		// Call remote service with Feign
+		Map<String, String> calleeMetadata2 = metadataCalleeService2.info();
+		calleeMetadata2.forEach((key, value) -> {
+			LOG.info("Feign Callee2 Metadata (Key-Value): {} : {}", key, value);
 		});
 
 		// Get Custom Metadata From Context

spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeService2.java

@@ -28,8 +28,8 @@ import org.springframework.web.bind.annotation.GetMapping;
  * @author Palmer Xu
  */
 @FeignClient(value = "MetadataCalleeService2",
-		fallback = MetadataCallee2ServiceFallback.class)
+		fallback = MetadataCalleeService2Fallback.class)
-public interface MetadataCallee2Service {
+public interface MetadataCalleeService2 {
 
 	/**
 	 * Get information of callee.

spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/java/com/tencent/cloud/metadata/service/callee/MetadataCalleeService2Fallback.java

@@ -29,7 +29,7 @@ import org.springframework.stereotype.Component;
  * @author Palmer Xu
  */
 @Component
-public class MetadataCallee2ServiceFallback implements MetadataCallee2Service {
+public class MetadataCalleeService2Fallback implements MetadataCalleeService2 {
 
 	@Override
 	public Map<String, String> info() {

spring-cloud-tencent-examples/metadata-transfer-example/metadata-callee-service/src/main/resources/bootstrap.yml

@@ -19,9 +19,14 @@ spring:
           CUSTOM-METADATA-KEY-LOCAL-2: CUSTOM-VALUE-LOCAL-2
           # Example: transitive
           CUSTOM-METADATA-KEY-TRANSITIVE-2: CUSTOM-VALUE-TRANSITIVE-2
+          # Example: disposable
+#          CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE-CALLEE
         # Assigned which metadata key-value will be passed along the link
         transitive:
           - CUSTOM-METADATA-KEY-TRANSITIVE-2
+#          - CUSTOM-METADATA-KEY-DISPOSABLE
+        disposable:
+          - CUSTOM-METADATA-KEY-DISPOSABLE
 
 management:
   endpoints:

spring-cloud-tencent-examples/metadata-transfer-example/metadata-caller-service/src/main/resources/bootstrap.yml

@@ -19,7 +19,7 @@ spring:
         content:
           # Example: intransitive
           CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
-          #
+          # Example: disposable
           CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE
           # Example: transitive
           CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE