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-rw-r--r--kube2msb/src/msb_client.go119
1 files changed, 119 insertions, 0 deletions
diff --git a/kube2msb/src/msb_client.go b/kube2msb/src/msb_client.go
new file mode 100644
index 0000000..da0557a
--- /dev/null
+++ b/kube2msb/src/msb_client.go
@@ -0,0 +1,119 @@
+/*
+Copyright 2017 ZTE, Inc. and others.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package main
+
+import (
+ "bytes"
+ "encoding/json"
+ "fmt"
+ "log"
+ "net/http"
+)
+
+const (
+ urlPrefix = "/api/microservices/v1/services"
+)
+
+type Client interface {
+ Register(string)
+ DeRegister(string)
+}
+
+type MSBAgent struct {
+ Client
+ url string
+}
+
+func newMSBAgent(s string) (*MSBAgent, error) {
+ healthCheckURL := s + urlPrefix + "/health"
+ resp, err := http.Get(healthCheckURL)
+ if err != nil {
+ return nil, err
+ }
+
+ if resp.StatusCode != http.StatusOK {
+ return nil, fmt.Errorf("MSB agent:%s is not available", s)
+ }
+
+ return &MSBAgent{url: s}, nil
+}
+
+func (client *MSBAgent) Register(serviceInfo string) {
+ var (
+ sa = &ServiceAnnotation{}
+ )
+ err := json.Unmarshal([]byte(serviceInfo), sa)
+ if err != nil {
+ log.Printf("Failed to Unmarshal serviceInfo to ServiceAnnotation:%v", err)
+ return
+ }
+
+ su := ServiceAnnotation2ServiceUnit(sa)
+ body, _ := json.Marshal(su)
+ postURL := client.url + urlPrefix
+
+ resp, err := http.Post(postURL, "application/json", bytes.NewReader(body))
+ if err != nil {
+ log.Printf("Failed to do a request:%v", err)
+ return
+ }
+
+ log.Printf("Http request to register service:%s returned code:%d", su.Name, resp.StatusCode)
+}
+
+func (client *MSBAgent) DeRegister(serviceInfo string) {
+ var (
+ sa = &ServiceAnnotation{}
+ )
+
+ err := json.Unmarshal([]byte(serviceInfo), sa)
+ if err != nil {
+ log.Printf("Failed to Unmarshal serviceInfo to ServiceAnnotation:%v", err)
+ return
+ }
+
+ deleteURL := client.url + urlPrefix + "/" + sa.ServiceName + "/version/" + sa.Version + "/nodes/" + sa.IP + "/" + sa.Port
+
+ req, err := http.NewRequest("DELETE", deleteURL, nil)
+ if err != nil {
+ log.Printf("(deleteURL:%s) failed to NewRequest:%v", deleteURL, err)
+ return
+ }
+
+ c := &http.Client{}
+ resp, err := c.Do(req)
+ if err != nil {
+ log.Printf("(deleteURL:%s) failed to do a request:%v", deleteURL, err)
+ return
+ }
+ log.Printf("Http request to deregister service:%s returned code:%d", sa.ServiceName, resp.StatusCode)
+}
+
+func ServiceAnnotation2ServiceUnit(sa *ServiceAnnotation) *ServiceUnit {
+ if sa == nil {
+ return nil
+ }
+
+ return &ServiceUnit{
+ Name: sa.ServiceName,
+ Version: sa.Version,
+ URL: sa.URL,
+ Protocol: sa.Protocol,
+ LBPolicy: sa.LBPolicy,
+ VisualRange: sa.VisualRange,
+ Instances: []InstanceUnit{{ServiceIP: sa.IP, ServicePort: sa.Port}},
+ }
+}