VictoriaMetrics/app/vmalert/datasource/init.go
Aliaksandr Valialkin d5dddb0953 all: use %w instead of %s for wrapping errors in fmt.Errorf
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
2020-06-30 23:05:11 +03:00

38 lines
1.8 KiB
Go

package datasource
import (
"flag"
"fmt"
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/utils"
)
var (
addr = flag.String("datasource.url", "", "Victoria Metrics or VMSelect url. Required parameter."+
" E.g. http://127.0.0.1:8428")
basicAuthUsername = flag.String("datasource.basicAuth.username", "", "Optional basic auth username for -datasource.url")
basicAuthPassword = flag.String("datasource.basicAuth.password", "", "Optional basic auth password for -datasource.url")
tlsInsecureSkipVerify = flag.Bool("datasource.tlsInsecureSkipVerify", false, "Whether to skip tls verification when connecting to -datasource.url")
tlsCertFile = flag.String("datasource.tlsCertFile", "", "Optional path to client-side TLS certificate file to use when connecting to -datasource.url")
tlsKeyFile = flag.String("datasource.tlsKeyFile", "", "Optional path to client-side TLS certificate key to use when connecting to -datasource.url")
tlsCAFile = flag.String("datasource.tlsCAFile", "", "Optional path to TLS CA file to use for verifying connections to -datasource.url. "+
"By default system CA is used")
tlsServerName = flag.String("datasource.tlsServerName", "", "Optional TLS server name to use for connections to -datasource.url. "+
"By default the server name from -datasource.url is used")
)
// Init creates a Querier from provided flag values.
func Init() (Querier, error) {
if *addr == "" {
flag.PrintDefaults()
return nil, fmt.Errorf("datasource.url is empty")
}
tr, err := utils.Transport(*addr, *tlsCertFile, *tlsKeyFile, *tlsCAFile, *tlsServerName, *tlsInsecureSkipVerify)
if err != nil {
return nil, fmt.Errorf("failed to create transport: %w", err)
}
c := &http.Client{Transport: tr}
return NewVMStorage(*addr, *basicAuthUsername, *basicAuthPassword, c), nil
}