/
client.go
77 lines (67 loc) · 2.41 KB
/
client.go
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package client
import (
"flag"
"io"
"time"
"github.com/cortexproject/cortex/pkg/distributor"
"github.com/cortexproject/cortex/pkg/util/grpcclient"
"github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc"
"github.com/opentracing/opentracing-go"
"github.com/weaveworks/common/middleware"
"google.golang.org/grpc"
"google.golang.org/grpc/health/grpc_health_v1"
"github.com/grafana/loki/pkg/logproto"
)
type HealthAndIngesterClient interface {
logproto.IngesterClient
grpc_health_v1.HealthClient
Close() error
}
type ClosableHealthAndIngesterClient struct {
logproto.PusherClient
logproto.QuerierClient
logproto.IngesterClient
grpc_health_v1.HealthClient
io.Closer
}
// Config for an ingester client.
type Config struct {
PoolConfig distributor.PoolConfig `yaml:"pool_config,omitempty"`
RemoteTimeout time.Duration `yaml:"remote_timeout,omitempty"`
GRPCClientConfig grpcclient.Config `yaml:"grpc_client_config"`
}
// RegisterFlags registers flags.
func (cfg *Config) RegisterFlags(f *flag.FlagSet) {
cfg.GRPCClientConfig.RegisterFlagsWithPrefix("ingester.client", f)
cfg.PoolConfig.RegisterFlags(f)
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) (HealthAndIngesterClient, error) {
opts := []grpc.DialOption{
grpc.WithInsecure(),
grpc.WithDefaultCallOptions(cfg.GRPCClientConfig.CallOptions()...),
}
opts = append(opts, cfg.GRPCClientConfig.DialOption(instrumentation())...)
conn, err := grpc.Dial(addr, opts...)
if err != nil {
return nil, err
}
return ClosableHealthAndIngesterClient{
PusherClient: logproto.NewPusherClient(conn),
QuerierClient: logproto.NewQuerierClient(conn),
IngesterClient: logproto.NewIngesterClient(conn),
HealthClient: grpc_health_v1.NewHealthClient(conn),
Closer: conn,
}, nil
}
func instrumentation() ([]grpc.UnaryClientInterceptor, []grpc.StreamClientInterceptor) {
return []grpc.UnaryClientInterceptor{
otgrpc.OpenTracingClientInterceptor(opentracing.GlobalTracer()),
middleware.ClientUserHeaderInterceptor,
}, []grpc.StreamClientInterceptor{
otgrpc.OpenTracingStreamClientInterceptor(opentracing.GlobalTracer()),
middleware.StreamClientUserHeaderInterceptor,
}
}