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go-micro/wrapper.go
2016-11-02 17:21:53 +00:00

48 lines
1.1 KiB
Go

package micro
import (
"github.com/micro/go-micro/client"
"github.com/micro/go-micro/metadata"
"golang.org/x/net/context"
)
type clientWrapper struct {
client.Client
headers metadata.Metadata
}
func (c *clientWrapper) setHeaders(ctx context.Context) context.Context {
md := make(metadata.Metadata)
if mda, ok := metadata.FromContext(ctx); ok {
// make copy of metadata
for k, v := range mda {
md[k] = v
}
}
for k, v := range c.headers {
if _, ok := md[k]; !ok {
md[k] = v
}
}
return metadata.NewContext(ctx, md)
}
func (c *clientWrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
ctx = c.setHeaders(ctx)
return c.Client.Call(ctx, req, rsp, opts...)
}
func (c *clientWrapper) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Streamer, error) {
ctx = c.setHeaders(ctx)
return c.Client.Stream(ctx, req, opts...)
}
func (c *clientWrapper) Publish(ctx context.Context, p client.Publication, opts ...client.PublishOption) error {
ctx = c.setHeaders(ctx)
return c.Client.Publish(ctx, p, opts...)
}