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db.go
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db.go
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// Copyright 2019 Anapaya Systems
//
// 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 metrics
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/scionproto/scion/go/lib/prom"
)
type operation string
// Database operations.
const (
GetIssCert = "get_iss_cert"
GetIssCertMax = "get_iss_cert_max"
GetAllIssCerts = "get_all_iss_certs"
GetChain = "get_chain"
GetChainMax = "get_chain_max"
GetAllChains = "get_all_chains"
GetTRC = "get_trc"
GetTRCMax = "get_trc_max"
GetAllTRCs = "get_all_trcs"
GetCustKey = "get_cust_key"
GetAllCustKeys = "get_all_cust_keys"
InsertIssCert = "insert_iss_cert"
InsertChain = "insert_chain"
InsertTRC = "insert_trc"
InsertCustKey = "insert_cust_key"
BeginTx = "tx_begin"
CommitTx = "tx_commit"
RollbackTx = "tx_rollback"
)
// QueryLabels defines the database query labels.
type QueryLabels struct {
Driver string
Operation string
Result string
}
// Labels returns the list of labels.
func (l QueryLabels) Labels() []string {
return []string{"driver", "operation", prom.LabelResult}
}
// Values returns the label values in the order defined by Labels.
func (l QueryLabels) Values() []string {
return []string{l.Driver, l.Operation, l.Result}
}
type db struct {
queries *prometheus.CounterVec
}
func newDB() db {
return db{
queries: prom.NewCounterVecWithLabels(Namespace, "", "db_queries_total",
"Total queries to the database", QueryLabels{}),
}
}
func (d *db) Queries(l QueryLabels) prometheus.Counter {
return d.queries.WithLabelValues(l.Values()...)
}