/
helthcheckclient.go
58 lines (50 loc) · 1.39 KB
/
helthcheckclient.go
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package grpc
import (
"context"
"github.com/andrescosta/goico/pkg/service"
"google.golang.org/grpc"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
)
type HealthCheckClient struct {
serverAddr string
conn *grpc.ClientConn
name string
client healthpb.HealthClient
}
func NewHelthCheckClient(ctx context.Context, addr string, name string, d service.GrpcDialer) (*HealthCheckClient, error) {
conn, err := d.Dial(ctx, addr)
if err != nil {
return nil, err
}
return NewHelthCheckClientWithConn(conn, name)
}
func NewHelthCheckClientWithConn(conn *grpc.ClientConn, name string) (*HealthCheckClient, error) {
conn.Target()
client := healthpb.NewHealthClient(conn)
return &HealthCheckClient{
serverAddr: conn.Target(),
conn: conn,
client: client,
name: name,
}, nil
}
func (c *HealthCheckClient) Close() error {
return c.conn.Close()
}
func (c *HealthCheckClient) Check(ctx context.Context) (healthpb.HealthCheckResponse_ServingStatus, error) {
r, err := c.client.Check(ctx, &healthpb.HealthCheckRequest{Service: c.name})
if err != nil {
return healthpb.HealthCheckResponse_UNKNOWN, err
}
return r.Status, nil
}
func (c *HealthCheckClient) CheckOk(ctx context.Context) error {
r, err := c.Check(ctx)
if err != nil {
return err
}
if r != healthpb.HealthCheckResponse_SERVING {
return service.ErrNotHealthy{Addr: c.serverAddr}
}
return nil
}