forked from grafana/loki
/
client.go
65 lines (59 loc) · 2.16 KB
/
client.go
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package client
import (
"flag"
"io"
"time"
cortex_client "github.com/cortexproject/cortex/pkg/ingester/client"
"github.com/grafana/loki/pkg/logproto"
"github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc"
grpc_middleware "github.com/mwitkow/go-grpc-middleware"
opentracing "github.com/opentracing/opentracing-go"
"github.com/weaveworks/common/middleware"
"google.golang.org/grpc"
"google.golang.org/grpc/health/grpc_health_v1"
)
// Config for an ingester client.
type Config struct {
PoolConfig cortex_client.PoolConfig `yaml:"pool_config,omitempty"`
MaxRecvMsgSize int `yaml:"max_recv_msg_size,omitempty"`
RemoteTimeout time.Duration `yaml:"remote_timeout,omitempty"`
}
// RegisterFlags registers flags.
func (cfg *Config) RegisterFlags(f *flag.FlagSet) {
cfg.PoolConfig.RegisterFlags(f)
f.IntVar(&cfg.MaxRecvMsgSize, "ingester.client.max-recv-message-size", 64*1024*1024, "Maximum message size, in bytes, this client will receive.")
f.DurationVar(&cfg.PoolConfig.RemoteTimeout, "ingester.client.healthcheck-timeout", 1*time.Second, "Timeout for healthcheck rpcs.")
f.DurationVar(&cfg.RemoteTimeout, "ingester.client.timeout", 5*time.Second, "Timeout for ingester client RPCs.")
}
// New returns a new ingester client.
func New(cfg Config, addr string) (grpc_health_v1.HealthClient, error) {
opts := []grpc.DialOption{
grpc.WithInsecure(),
grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(
otgrpc.OpenTracingClientInterceptor(opentracing.GlobalTracer()),
middleware.ClientUserHeaderInterceptor,
)),
grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(
otgrpc.OpenTracingStreamClientInterceptor(opentracing.GlobalTracer()),
middleware.StreamClientUserHeaderInterceptor,
)),
grpc.WithDefaultCallOptions(
grpc.MaxCallRecvMsgSize(cfg.MaxRecvMsgSize),
grpc.UseCompressor("gzip"),
),
}
conn, err := grpc.Dial(addr, opts...)
if err != nil {
return nil, err
}
return struct {
logproto.PusherClient
logproto.QuerierClient
grpc_health_v1.HealthClient
io.Closer
}{
PusherClient: logproto.NewPusherClient(conn),
QuerierClient: logproto.NewQuerierClient(conn),
Closer: conn,
}, nil
}