ENG-48445: Added generic filter and optional upsert condition (for op…

…timistic updates) (#226)

* remove lock changes

* fix type

* refactor and review comments

config-service-api/src/main/proto/org/hypertrace/config/service/v1/config_service.proto

@@ -38,6 +38,10 @@ message UpsertConfigRequest {
   // optional - only required if config applies to a specific context.
   // If empty, specified config is associated with a default context.
   string context = 4;
+
+  // optional - required when we want to update the target record when condition passes
+  // if no condition present creates or replaces the existing document
+  Filter upsert_condition = 5;
 }
 
 message UpsertConfigResponse {
@@ -161,3 +165,39 @@ message UpsertAllConfigsResponse {
     optional google.protobuf.Value prev_config = 5;
   }
 }
+
+message Filter {
+  oneof type {
+    RelationalFilter relational_filter = 1;
+    LogicalFilter logical_filter = 2;
+  }
+}
+
+message RelationalFilter {
+  string config_json_path = 1;
+  RelationalOperator operator = 2;
+  google.protobuf.Value value = 3;
+}
+
+message LogicalFilter {
+  LogicalOperator operator = 1;
+  repeated Filter operands = 2;
+}
+
+enum RelationalOperator {
+  RELATIONAL_OPERATOR_UNSPECIFIED = 0;
+  RELATIONAL_OPERATOR_EQ = 1;
+  RELATIONAL_OPERATOR_NEQ = 2;
+  RELATIONAL_OPERATOR_IN = 3;
+  RELATIONAL_OPERATOR_NOT_IN = 4;
+  RELATIONAL_OPERATOR_GT = 5;
+  RELATIONAL_OPERATOR_LT = 6;
+  RELATIONAL_OPERATOR_GTE = 7;
+  RELATIONAL_OPERATOR_LTE = 8;
+}
+
+enum LogicalOperator {
+  LOGICAL_OPERATOR_UNSPECIFIED = 0;
+  LOGICAL_OPERATOR_AND = 1;
+  LOGICAL_OPERATOR_OR = 2;
+}