我已为APIM启用了诊断日志，该日志已发送到日志分析。
场景
服务器的所有传入请求都具有RequestTracking_Id标头。
所有后端服务在日志中使用请求中的RequestTracking_Id标头来跟踪请求。
但是从APIM日志中，我无法提取此标头进行查询。
是否有可能在APIM诊断日志中包含传入请求的标头信息？
查询：
AzureDiagnostics
| where Type contains "Azure" and Resource contains "APIM-DEV" and backendUrl_s contains "/relativePath" and DurationMs > 2000
可用于查询的列是：
TenantId SourceSystem MG ManagementGroupName TimeGenerated计算机activityId_g requestResourceType_s requestResourceId_s collectionRid_s statusCode_s duration_s clientIpAddress_s requestCharge_s requestLength_s responseLength_s resourceTokenUserRid_s region_s partitionId_g error_number_d严重性user_defined_b state_d exec_type_d wait_category_s total_query_wait_time_ms_d max_query_wait_time_ms_d is_parameterizable_s statement_type_s statement_key_hash_s query_param_type_d interval_start_time_d interval_end_time_d logical_io_writes_d max_logical_io_writes_d physical_io_reads_d max_physical_io_reads_d logical_io_reads_d max_logical_io_reads_d execution_type_d count_executions_d cpu_time_d max_cpu_time_d dop_d max_dop_d rowcount_d max_rowcount_d query_max_used_memory_d max_query_max_used_memory_d duration_d max_duration_d num_physical_io_reads_d max_num_physical_io_reads_d log_bytes_used_d max_log_bytes_used_d query_id_d query_hash_s plan_id_d query_plan_hash_s statement_sql_handle_s LogicalServerName_s ElasticPoolName_s DatabaseName_s start_utc_date_t end_utc_date_t wait_type_s delta_max_wait_time_ms_d delta_signal_wait_time_ms_d delta_wait_time_ms_d delta_waiting_tasks_count_d keyProperties_curve_s keyProperties_operations_s keyProperties_attributes_enabled_b algorithm_s identity_claim_xms_mirid_s lastError_transportErrorCode_d subnetId_s backendMethod_s backendUrl_s backendResponseCode_d backendTime_d requestSize_d productId_s userId_s apimSubscriptionId_s backendProtocol_s secretProperties_attributes_enabled_b clientIp_s clientPort_s ruleSetType_s ruleSetVersion_s ruleId_s消息action_s site_s details_message_s details_data_s details_file_s details_line_s hostname_s apiId_s operationId_s apiRevision_s clientIP_s clientPort_d httpMethod_s requestQuery_s userAgent_s httpStatus_d httpVersion_s接收dBytes_d sentBytes_d timeTaken_d sslEnabled_s host_s Level_d isRequestSuccess_b location_s lastError_source_s lastError_reason_s lastError_message_s lastError_section_s method_s url_s responseCode_d responseSize_d cache_s clientProtocol_s lastError_elapsed_d clientTime_d matchedConnections_d systemId_g vnetResourceGuid_g subnetPrefix_s macAddress_s primaryIPv4Address_s ruleName_s direction_s type_s instanceId_s healthyHostCount_d unHealthyHostCount_d requestCount_d latency_d failedRequestCount_d throughput_d priority_d conditions_protocols_s conditions_sourcePortRange_s conditions_destinationPortRange_s conditions_destinationIP_s conditions_sourceIP_s conditions_None_s trustedService_s的correlationID identity_claim_http_schemas_microsoft_com_identity_claims_scope_s isAccessPolicyMatch_b certificateProperties_attributes_enabled_b certificatePolicyProperties_certificateProperties_subject_s certificatePolicyProperties _certificateProperties_validityInMonths_d certificatePolicyProperties_keyProperties_type_s certificatePolicyProperties_keyProperties_size_d certificatePolicyProperties_keyProperties_reuse_b certificatePolicyProperties_keyProperties_export_b certificatePolicyProperties_certificateIssuerProperties_name_s certificateEnrollmentProperties_id_s certificateEnrollmentProperties_certificateProperties_subject_s certificateEnrollmentProperties_certificateProperties_sha1_s certificateEnrollmentProperties_certificateProperties_sha256_s certificateEnrollmentProperties_certificateProperties_nbf_t certificateEnrollmentProperties_certificateProperties_exp_t certificateEnrollmentProperties_keyProperties_size_d certificateEnrollmentProperties_keyProperties_type_s certificateEnrollmentProperties_secretProperties_type_s certificateEnrollmentProperties_attributes_created_d certificateEnrollmentProperties_attributes_enabled_b certificateEnrollmentProperties_attributes_updated_ d ResultDescription keyProperties_type_s keyProperties_size_d secretProperties_type_s certificateProperties_subject_s certificateProperties_sha1_s certificateProperties_sha256_s certificateProperties_nbf_t certificateProperties_exp_t类别OperationName与resultType CallerIPAddress identity_claim_http_schemas_microsoft_com_identity_claims_objectidentifier_g identity_claim_http_schemas_xmlsoap_org_ws_2005_05_identity_claims_upn_s identity_claim_appid_g id_s clientInfo_s requestUri_s httpStatusCode_d vaultProperties_s RESOURCEID OperationVersion ResultSignature DURATION毫秒SubscriptionId资源组ResourceProvider资源的ResourceType类型_ResourceId
答案 0 :(得分：1)
根据您的应用程序想要特定的日志。您可以在端点级别/ api级别/产品级别的apim策略中使用<log-to-eventhub/>。
请查看以下链接，以了解有关此政策的更多信息。 https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/api-management/api-management-log-to-eventhub-sample.md
在策略中，您将从context对象获得所有请求和响应对象。
请查看链接以了解有关上下文变量的更多信息。
https://docs.microsoft.com/en-us/azure/api-management/api-management-policy-expressions#ContextVariables
对于标题，您可以查找字典对象context.Request.Header