Add protobuf definitions for min/max aggregation

[yiyuabc]

Description

• Modified common.proto
• Support Min and Max aggregation in Proto/gRPC server
• gRPC server PR: Add gRPC support for Min and Max metric aggregations OpenSearch#20794

 % git diff
diff --git a/protos/schemas/common.proto b/protos/schemas/common.proto
index 0746d3a..67c5112 100755
--- a/protos/schemas/common.proto
+++ b/protos/schemas/common.proto
@@ -134,7 +134,7 @@ message SearchRequestBody {
   optional TrackHits track_total_hits = 7;
 
   // [optional] Values used to boost the score of specified indexes. Specify in the format of <index> : <boost-multiplier>
-  map<string, float> indices_boost = 8;
+  map<string, float> indices_boost = 8 [deprecated = true];
 
   // [optional] The fields that OpenSearch should return using their docvalue forms. Specify a format to return results in a certain format, such as date and time.
   repeated FieldAndFormat docvalue_fields = 9;
@@ -210,6 +210,12 @@ message SearchRequestBody {
 
   // [optional]
   map<string, DerivedField> derived = 35;
+
+  // Defines the aggregations that are run as part of the search request.
+  map<string, AggregationContainer> aggregations = 36;
+
+  // [optional] Values used to boost the score of specified indexes. Specify in the format of <index> : <boost-multiplier>
+  repeated FloatMap indices_boost_2 = 37;
 }
 
 message DerivedField {
@@ -286,6 +292,8 @@ message SearchResponse {
 
   // [optional] If the query was terminated early, the terminated_early flag will be set to true in the response
   optional bool terminated_early = 13;
+
+  map<string, Aggregate> aggregations = 14;
 }
 
 message ProcessorExecutionDetail {
@@ -2908,6 +2916,70 @@ message ShardSearchFailure {
   ErrorCause reason = 4;
 }
 
+message Aggregate {
+
+  // The custom metadata attached to a resource.
+  optional ObjectMap meta = 1;
+
+  SingleMetricAggregateBaseValue value = 2;
+
+  optional string value_as_string = 3;
+}
+
+message AggregationContainer {
+
+  // Custom metadata to associate with the aggregation (optional)
+  optional ObjectMap meta = 1;
+  oneof aggregation_container {
+    MaxAggregation max = 2;
+
+    MinAggregation min = 3;
+
+  }
+}
+
+message FloatMap {
+
+  map<string, float> float_map = 1;
+}
+
+message MaxAggregation {
+
+  optional FieldValue missing = 1;
+
+  // The path to a field or an array of paths. Some APIs support wildcards in the path, which allows you to select multiple fields.
+  optional string field = 2;
+
+  optional Script script = 3;
+
+  optional string format = 4;
+
+  optional ValueType value_type = 5;
+}
+
+message MinAggregation {
+
+  optional FieldValue missing = 1;
+
+  // The path to a field or an array of paths. Some APIs support wildcards in the path, which allows you to select multiple fields.
+  optional string field = 2;
+
+  optional Script script = 3;
+
+  optional string format = 4;
+
+  optional ValueType value_type = 5;
+}
+
+message SingleMetricAggregateBaseValue {
+  oneof single_metric_aggregate_base_value {
+    double double = 1;
+
+    NullValue null_value = 2;
+
+  }
+}
+
 enum FieldValueFactorModifier {
   FIELD_VALUE_FACTOR_MODIFIER_UNSPECIFIED = 0;
   FIELD_VALUE_FACTOR_MODIFIER_LN = 1;
@@ -3243,6 +3315,23 @@ enum SimpleQueryStringFlag {
   SIMPLE_QUERY_STRING_FLAG_WHITESPACE = 13;
 }
 
+enum ValueType {
+  VALUE_TYPE_UNSPECIFIED = 0;
+  VALUE_TYPE_BOOLEAN = 1;
+  VALUE_TYPE_BYTE = 2;
+  VALUE_TYPE_DATE = 3;
+  VALUE_TYPE_DOUBLE = 4;
+  VALUE_TYPE_FLOAT = 5;
+  VALUE_TYPE_INTEGER = 6;
+  VALUE_TYPE_IP = 7;
+  VALUE_TYPE_LONG = 8;
+  VALUE_TYPE_NUMBER = 9;
+  VALUE_TYPE_NUMERIC = 10;
+  VALUE_TYPE_SHORT = 11;
+  VALUE_TYPE_STRING = 12;
+  VALUE_TYPE_UNSIGNED_LONG = 13;
+}
+
 message ObjectMap {
   map<string, Value> fields = 1;
 
(END)

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

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