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http.go
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http.go
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package handler
import (
"bytes"
"encoding/json"
"io/ioutil"
"net/http"
url "net/url"
"github.com/fsnotify/fsnotify"
log "github.com/sirupsen/logrus"
"microfile/config"
)
type HTTP struct {
Path string
DefaultURL string
SendContents bool
}
type payload struct {
Filename string `json:"filename"`
Event string `json:"event"`
Contents []byte `json:"contents,omitempty"`
}
func (h HTTP) Handle(event fsnotify.Event) {
postPayload := payload{
Filename: event.Name,
Event: event.Op.String(),
}
if h.SendContents == true {
contents, _ := ioutil.ReadFile(event.Name)
postPayload.Contents = contents
}
json, _ := json.Marshal(postPayload)
destinationURL := PathCompletion(h.Path, h.DefaultURL)
// at this point, the request has not been fired, so err here would be URL parsing errors
req, _ := http.NewRequest("POST", destinationURL, bytes.NewBuffer(json))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
response, err := client.Do(req)
if err != nil {
log.WithFields(
log.Fields{
"handler": "http",
"url": destinationURL,
}).Warn("Problem while doing an http POST")
return
}
if response != nil {
defer response.Body.Close()
} else {
log.WithFields(
log.Fields{
"handler": "http",
"url": destinationURL,
}).Warn("Empty HTTP response")
}
}
func (h *HTTP) Init(action config.Action) error {
if action.Options["path"] != "" {
h.Path = action.Options["path"]
}
return nil
}
// pathCompletion completes a URL is needed
// if url is a partial path like /api then the path should
// use the DefaultURL string from config
func PathCompletion(s string, defaultURL string) string {
u, err := url.Parse(s)
// TODO: this needs to go into the config validation
if err != nil {
log.WithFields(
log.Fields{
"handler": "http",
"url": u,
}).Warn("URL doesn't appear to be a URL.")
}
du, err := url.Parse(defaultURL)
if err != nil {
log.WithFields(
log.Fields{
"handler": "http",
"url": u,
}).Warn("What is configured as DefaultURL doesn't appear to be a URL.")
}
if u.Host == "" {
u.Host = du.Host
u.Scheme = du.Scheme
}
return u.String()
}