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logging.go
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logging.go
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"context"
"database/sql"
"log"
"time"
"go.uber.org/zap"
secret "github.com/uber/athenadriver/examples/constants"
drv "github.com/uber/athenadriver/go"
)
func main() {
// 1. Set AWS Credential in Driver Config.
conf, err := drv.NewDefaultConfig(secret.OutputBucket, secret.Region,
secret.AccessID, secret.SecretAccessKey)
conf.SetLogging(true)
if err != nil {
log.Fatal(err)
return
}
// 2. Open Connection.
dsn := conf.Stringify()
db, _ := sql.Open(drv.DriverName, dsn)
logger, _ := zap.NewProduction()
defer logger.Sync()
// 3. Query cancellation after 2 seconds
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
ctx = context.WithValue(ctx, drv.LoggerKey, logger)
rows, err := db.QueryContext(ctx, "select count(*) from sampledb.elb_logs")
if err != nil {
log.Fatal(err)
return
}
defer rows.Close()
}
/*
Sample Output:
{"level":"warn","ts":1579990455.5467792,"caller":"go/observability.go:73","msg":"query canceled","resp.QueryExecutionId":"34e08219-ca2e-4e10-94b3-0ebf6c4c22f6"}
2020/01/25 14:14:15 context deadline exceeded
*/