89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
package trace
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"os"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
|
|
"go-common/library/conf/dsn"
|
|
xtime "go-common/library/time"
|
|
)
|
|
|
|
var _traceDSN = "unixgram:///var/run/dapper-collect/dapper-collect.sock"
|
|
|
|
func init() {
|
|
if v := os.Getenv("TRACE"); v != "" {
|
|
_traceDSN = v
|
|
}
|
|
flag.StringVar(&_traceDSN, "trace", _traceDSN, "trace report dsn, or use TRACE env.")
|
|
}
|
|
|
|
// Config config.
|
|
type Config struct {
|
|
// Report network e.g. unixgram, tcp, udp
|
|
Network string `dsn:"network"`
|
|
// For TCP and UDP networks, the addr has the form "host:port".
|
|
// For Unix networks, the address must be a file system path.
|
|
Addr string `dsn:"address"`
|
|
// DEPRECATED
|
|
Proto string `dsn:"network"`
|
|
// DEPRECATED
|
|
Chan int `dsn:"query.chan,"`
|
|
// Report timeout
|
|
Timeout xtime.Duration `dsn:"query.timeout,200ms"`
|
|
// DisableSample
|
|
DisableSample bool `dsn:"query.disable_sample"`
|
|
// probabilitySampling
|
|
Probability float32 `dsn:"-"`
|
|
// ProtocolVersion
|
|
ProtocolVersion int32 `dsn:"query.protocol_version,2"`
|
|
}
|
|
|
|
func parseDSN(rawdsn string) (*Config, error) {
|
|
d, err := dsn.Parse(rawdsn)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "trace: invalid dsn: %s", rawdsn)
|
|
}
|
|
cfg := new(Config)
|
|
if _, err = d.Bind(cfg); err != nil {
|
|
return nil, errors.Wrapf(err, "trace: invalid dsn: %s", rawdsn)
|
|
}
|
|
return cfg, nil
|
|
}
|
|
|
|
// TracerFromEnvFlag new tracer from env and flag
|
|
func TracerFromEnvFlag() (Tracer, error) {
|
|
cfg, err := parseDSN(_traceDSN)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
report := newReport(cfg.Network, cfg.Addr, time.Duration(cfg.Timeout), cfg.ProtocolVersion)
|
|
serviceName := serviceNameFromEnv()
|
|
return newTracer(serviceName, report, cfg), nil
|
|
}
|
|
|
|
// Init 兼容以前的 Init 写法
|
|
func Init(cfg *Config) {
|
|
serviceName := serviceNameFromEnv()
|
|
if cfg != nil {
|
|
// NOTE compatible proto field
|
|
cfg.Network = cfg.Proto
|
|
fmt.Fprintf(os.Stderr, "[deprecated] trace.Init() with conf is Deprecated, argument will be ignored. please use flag -trace or env TRACE to configure trace.\n")
|
|
report := newReport(cfg.Network, cfg.Addr, time.Duration(cfg.Timeout), cfg.ProtocolVersion)
|
|
SetGlobalTracer(newTracer(serviceName, report, cfg))
|
|
return
|
|
}
|
|
// paser config from env
|
|
cfg, err := parseDSN(_traceDSN)
|
|
if err != nil {
|
|
panic(fmt.Errorf("parse trace dsn error: %s", err))
|
|
}
|
|
report := newReport(cfg.Network, cfg.Addr, time.Duration(cfg.Timeout), cfg.ProtocolVersion)
|
|
// disable sample if uat env
|
|
cfg.DisableSample = isUATEnv()
|
|
SetGlobalTracer(newTracer(serviceName, report, cfg))
|
|
}
|