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hooks_api.go
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/
hooks_api.go
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package main
import (
"io/ioutil"
"net/http"
"github.com/30x/changeagent/hooks"
)
const (
hooksURI = "/hooks"
)
func (a *ChangeAgent) initHooksAPI(prefix string) {
a.router.HandleFunc(prefix+hooksURI, a.handleGetHooks).Methods("GET")
a.router.HandleFunc(prefix+hooksURI, a.handleSetHooks).Methods("POST")
a.router.HandleFunc(prefix+hooksURI, a.handleClearHooks).Methods("DELETE")
}
func (a *ChangeAgent) handleGetHooks(resp http.ResponseWriter, req *http.Request) {
h := a.raft.GetWebHooks()
resp.Header().Set("Content-Type", jsonContent)
if h == nil {
resp.Write([]byte("[]"))
} else {
resp.Write(hooks.EncodeHooksJSON(h))
}
}
func (a *ChangeAgent) handleSetHooks(resp http.ResponseWriter, req *http.Request) {
if !isJSON(resp, req) {
return
}
defer req.Body.Close()
bod, err := ioutil.ReadAll(req.Body)
if err != nil {
writeError(resp, http.StatusInternalServerError, err)
return
}
h, err := hooks.DecodeHooksJSON(bod)
if err != nil {
writeError(resp, http.StatusBadRequest, err)
return
}
a.updateWebHooks(resp, h)
}
func (a *ChangeAgent) handleClearHooks(resp http.ResponseWriter, req *http.Request) {
a.updateWebHooks(resp, []hooks.WebHook{})
}
func (a *ChangeAgent) updateWebHooks(resp http.ResponseWriter, h []hooks.WebHook) {
ix, err := a.raft.UpdateWebHooks(h)
if err != nil {
writeError(resp, http.StatusInternalServerError, err)
return
}
err = a.raft.WaitForCommit(ix)
if err == nil {
resp.Header().Set("Content-Type", jsonContent)
resp.Write(hooks.EncodeHooksJSON(h))
} else {
writeError(resp, http.StatusServiceUnavailable, err)
}
}