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# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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
#
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# See the License for the specific language governing permissions and
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# Top N record query is different with aggregation Query.
# Both of query results are top N, but aggregation topN query needs to do aggregation at query stage,
# the top N record query is just do order and get the list.

# Legacy metrics query protocol
# Replaced by the metrics-v2 in the future

# Top N query is based on latency order by given service and metric name.
input TopNRecordsCondition {
    serviceId: ID!
    metricName: String!
    topN: Int!
    # Top N order, ASC or DES.
    order: Order!
    duration: Duration!
}

type TopNRecord {
    statement: String
    latency: Long!
    # Have value, Only if the record has the trace id.
    # Slow record
    traceId: String
}

extend type Query {
    getTopNRecords(condition: TopNRecordsCondition!): [TopNRecord!]!
}