forked from leverly/service
/
zservice_client.go
56 lines (45 loc) · 1.71 KB
/
zservice_client.go
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package zc
import (
"net/http"
"bytes"
"errors"
log"zc-common-go/glog"
)
type ZServiceClient struct {
serviceAddr string
serviceName string
}
func NewZServiceClient(serviceAddr string, serviceName string) (*ZServiceClient) {
return &ZServiceClient{serviceAddr : serviceAddr, serviceName : serviceName}
}
func (c *ZServiceClient) Send(req *ZMsg) (resp *ZMsg, err error) {
if req.hasObjectData() {
err = req.encodeObject()
if err != nil { return nil, err }
}
url := "http://" + c.serviceAddr + "/" + c.serviceName +"/" + req.GetName()
payload, payloadFormat := req.GetPayload()
log.Infof("client send req: serive=%s; name=%s; payload=%s",
c.serviceName, req.GetName(), string(payload))
httpReq, err := http.NewRequest("POST", url, bytes.NewBuffer(payload))
if err != nil { return nil, errors.New("failed to create http req") }
httpReq.Header.Set("Content-Type", payloadFormat)
httpResp, err := http.DefaultClient.Do(httpReq)
if err != nil { return nil, err }
resp = NewZMsg()
resp.SetName(httpResp.Header.Get(ZC_MSG_NAME_HEADER))
if httpResp.ContentLength <= 0 { return resp, nil }
if httpResp.Header.Get("Content-Type") != ZC_MSG_PAYLOAD_OBJECT {
return nil, errors.New("wrong resp format, only support text/json")
}
respPayload := make([]byte, httpResp.ContentLength)
l, err := httpResp.Body.Read(respPayload)
if err != nil { return nil, err }
if l != len(respPayload) { return nil, errors.New("failed to read http resp body") }
log.Infof("client get resp: serive=%s; name=%s; payload=%s",
c.serviceName, resp.GetName(), string(respPayload))
resp.SetPayload(respPayload, httpResp.Header.Get("Content-Type"))
err = resp.decodeObject()
if err != nil { return nil, err }
return resp, err
}