// Copyright 2021 PingCAP, Inc.
//
// 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.

package reporter

import (
	"github.com/pingcap/tidb/pkg/metrics"
	"github.com/prometheus/client_golang/prometheus"
)

// reporter metrics vars
var (
	IgnoreExceedSQLCounter                prometheus.Counter
	IgnoreExceedPlanCounter               prometheus.Counter
	IgnoreExceedRUKeysCounter             prometheus.Counter
	IgnoreExceedRUTotalCounter            prometheus.Counter
	IgnoreLateCompactedRUKeysCounter      prometheus.Counter
	IgnoreLateCompactedRUTotalCounter     prometheus.Counter
	IgnoreCollectChannelFullCounter       prometheus.Counter
	IgnoreCollectStmtChannelFullCounter   prometheus.Counter
	IgnoreCollectRUChannelFullCounter     prometheus.Counter
	IgnoreReportChannelFullCounter        prometheus.Counter
	ReportAllDurationSuccHistogram        prometheus.Observer
	ReportAllDurationFailedHistogram      prometheus.Observer
	ReportRecordDurationSuccHistogram     prometheus.Observer
	ReportRecordDurationFailedHistogram   prometheus.Observer
	ReportSQLDurationSuccHistogram        prometheus.Observer
	ReportSQLDurationFailedHistogram      prometheus.Observer
	ReportPlanDurationSuccHistogram       prometheus.Observer
	ReportPlanDurationFailedHistogram     prometheus.Observer
	TopSQLReportRecordCounterHistogram    prometheus.Observer
	TopSQLReportRURecordCounterHistogram  prometheus.Observer
	TopSQLReportSQLCountHistogram         prometheus.Observer
	TopSQLReportPlanCountHistogram        prometheus.Observer
	ReportRURecordDurationSuccHistogram   prometheus.Observer
	ReportRURecordDurationFailedHistogram prometheus.Observer
)

func init() {
	InitMetricsVars()
}

// InitMetricsVars init topsql reporter metrics vars.
func InitMetricsVars() {
	IgnoreExceedSQLCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_exceed_sql")
	IgnoreExceedPlanCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_exceed_plan")
	IgnoreExceedRUKeysCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_exceed_ru_keys")
	IgnoreExceedRUTotalCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_exceed_ru_total")
	IgnoreLateCompactedRUKeysCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_late_compacted_ru_keys")
	IgnoreLateCompactedRUTotalCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_late_compacted_ru_total")
	IgnoreCollectChannelFullCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_collect_channel_full")
	IgnoreCollectStmtChannelFullCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_collect_stmt_channel_full")
	IgnoreCollectRUChannelFullCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_collect_ru_channel_full")
	IgnoreReportChannelFullCounter = metrics.TopSQLIgnoredCounter.WithLabelValues("ignore_report_channel_full")
	ReportAllDurationSuccHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("all", metrics.LblOK)
	ReportAllDurationFailedHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("all", metrics.LblError)
	ReportRecordDurationSuccHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("record", metrics.LblOK)
	ReportRecordDurationFailedHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("record", metrics.LblError)
	ReportSQLDurationSuccHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("sql", metrics.LblOK)
	ReportSQLDurationFailedHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("sql", metrics.LblError)
	ReportPlanDurationSuccHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("plan", metrics.LblOK)
	ReportPlanDurationFailedHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("plan", metrics.LblError)
	TopSQLReportRecordCounterHistogram = metrics.TopSQLReportDataHistogram.WithLabelValues("record")
	TopSQLReportRURecordCounterHistogram = metrics.TopSQLReportDataHistogram.WithLabelValues("ru_record")
	TopSQLReportSQLCountHistogram = metrics.TopSQLReportDataHistogram.WithLabelValues("sql")
	TopSQLReportPlanCountHistogram = metrics.TopSQLReportDataHistogram.WithLabelValues("plan")
	ReportRURecordDurationSuccHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("ru_record", metrics.LblOK)
	ReportRURecordDurationFailedHistogram = metrics.TopSQLReportDurationHistogram.WithLabelValues("ru_record", metrics.LblError)
}