| // |
| // Copyright 2018 gRPC 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. |
| // |
| |
| #ifndef GRPC_SRC_CORE_EXT_XDS_XDS_CLUSTER_H |
| #define GRPC_SRC_CORE_EXT_XDS_XDS_CLUSTER_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <stdint.h> |
| |
| #include <algorithm> |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "absl/strings/string_view.h" |
| #include "absl/types/optional.h" |
| #include "absl/types/variant.h" |
| #include "envoy/config/cluster/v3/cluster.upbdefs.h" |
| #include "envoy/extensions/clusters/aggregate/v3/cluster.upbdefs.h" |
| #include "envoy/extensions/transport_sockets/tls/v3/tls.upbdefs.h" |
| #include "upb/def.h" |
| |
| #include "src/core/ext/filters/client_channel/lb_policy/outlier_detection/outlier_detection.h" |
| #include "src/core/ext/xds/xds_bootstrap.h" |
| #include "src/core/ext/xds/xds_bootstrap_grpc.h" |
| #include "src/core/ext/xds/xds_client.h" |
| #include "src/core/ext/xds/xds_common_types.h" |
| #include "src/core/ext/xds/xds_health_status.h" |
| #include "src/core/ext/xds/xds_resource_type.h" |
| #include "src/core/ext/xds/xds_resource_type_impl.h" |
| #include "src/core/lib/json/json.h" |
| |
| namespace grpc_core { |
| |
| bool XdsCustomLbPolicyEnabled(); |
| bool XdsOverrideHostEnabled(); |
| |
| struct XdsClusterResource : public XdsResourceType::ResourceData { |
| struct Eds { |
| // If empty, defaults to the cluster name. |
| std::string eds_service_name; |
| |
| bool operator==(const Eds& other) const { |
| return eds_service_name == other.eds_service_name; |
| } |
| }; |
| |
| struct LogicalDns { |
| // The hostname to lookup in DNS. |
| std::string hostname; |
| |
| bool operator==(const LogicalDns& other) const { |
| return hostname == other.hostname; |
| } |
| }; |
| |
| struct Aggregate { |
| // Prioritized list of cluster names. |
| std::vector<std::string> prioritized_cluster_names; |
| |
| bool operator==(const Aggregate& other) const { |
| return prioritized_cluster_names == other.prioritized_cluster_names; |
| } |
| }; |
| |
| absl::variant<Eds, LogicalDns, Aggregate> type; |
| |
| // The LB policy to use for locality and endpoint picking. |
| Json::Array lb_policy_config; |
| |
| // Note: Remaining fields are not used for aggregate clusters. |
| |
| // The LRS server to use for load reporting. |
| // If not set, load reporting will be disabled. |
| absl::optional<GrpcXdsBootstrap::GrpcXdsServer> lrs_load_reporting_server; |
| |
| // Tls Context used by clients |
| CommonTlsContext common_tls_context; |
| |
| // Maximum number of outstanding requests can be made to the upstream |
| // cluster. |
| uint32_t max_concurrent_requests = 1024; |
| |
| absl::optional<OutlierDetectionConfig> outlier_detection; |
| |
| std::set<XdsHealthStatus> override_host_statuses; |
| |
| bool operator==(const XdsClusterResource& other) const { |
| return type == other.type && lb_policy_config == other.lb_policy_config && |
| lrs_load_reporting_server == other.lrs_load_reporting_server && |
| common_tls_context == other.common_tls_context && |
| max_concurrent_requests == other.max_concurrent_requests && |
| outlier_detection == other.outlier_detection && |
| override_host_statuses == other.override_host_statuses; |
| } |
| |
| std::string ToString() const; |
| }; |
| |
| class XdsClusterResourceType |
| : public XdsResourceTypeImpl<XdsClusterResourceType, XdsClusterResource> { |
| public: |
| absl::string_view type_url() const override { |
| return "envoy.config.cluster.v3.Cluster"; |
| } |
| |
| DecodeResult Decode(const XdsResourceType::DecodeContext& context, |
| absl::string_view serialized_resource) const override; |
| |
| bool AllResourcesRequiredInSotW() const override { return true; } |
| |
| void InitUpbSymtab(XdsClient*, upb_DefPool* symtab) const override { |
| envoy_config_cluster_v3_Cluster_getmsgdef(symtab); |
| envoy_extensions_clusters_aggregate_v3_ClusterConfig_getmsgdef(symtab); |
| envoy_extensions_transport_sockets_tls_v3_UpstreamTlsContext_getmsgdef( |
| symtab); |
| } |
| }; |
| |
| } // namespace grpc_core |
| |
| #endif // GRPC_SRC_CORE_EXT_XDS_XDS_CLUSTER_H |