new: git watcher added

Cloudwatcher can now notify all the changes applied to a git repository

README.md

@@ -12,6 +12,7 @@ Currently it implements the watchers for the following services:
 - Amazon S3
 - Google Drive
 - Dropbox
+- Git
 - local filesystem (fsnotify/polling)
 
 It is possible specify the directory to monitor and the polling time (how much often the watcher should check that directory), 
@@ -124,4 +125,26 @@ It is not mandatory to call the `SetConfig()` function, and the polling time arg
 
 Setting `disable_fsnotify` parameter on config to "true" the watcher doesn't use fsnotify and use the listing approach instead.
 
-> :warning: not set `disable_fsnotify` to "true" if you plan to use it on a big directory!!! It could increase the I/O on disk
+> :warning: not set `disable_fsnotify` to "true" if you plan to use it on a big directory!!! It could increase the I/O on disk
+
+## Git
+
+Git watcher has the following configurations:
+
+| Name | Description 
+| --- | --- |
+| `debug` | if "true" the debug mode is enabled (default "false") |
+| `monitor_type` | it can be "file" or "repo" (default is "repo") |
+| `auth_type` | authentication type to use: "none", "ssh", "http_token", "http_user_pass" (default "none") |
+| `ssh_pkey` | path of the ssh private key (required if auth_type = "ssh") |
+| `ssh_pkey_password` | password of the private key if set |
+| `http_token` | token to use if auth_type = "http_token" |
+| `http_username` | username of github account (auth_type = "http_user_pass") |
+| `http_password` | password of github account (auth_type = "http_user_pass") |
+| `repo_url` | url of the repository |
+| `repo_branch` | branch to watch (if `monitor_type` is "repo" you can leave it empty to watch all the branches) |
+| `assemble_events` | if "true" the events could contain one or more commit events (only if `monitor_type` = "repo") |
+| `temp_dir` | temporary directory to use for clone the repo: if empty the tmp dir will be used |
+
+If `monitor_type` is set to "repo", the event channel will receive an event with the `Object` field filled with commits or tags.
+If `assemble_events` is "true" the `Object` field could contains one or more commits.

examples/git/git_file.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"github.com/Matrix86/cloudwatcher"
+	"time"
+)
+
+func main() {
+	s, err := cloudwatcher.New("git", "", 2*time.Second)
+	if err != nil {
+		fmt.Printf("ERROR: %s", err)
+		return
+	}
+
+	config := map[string]string{
+		"debug":        "true",
+		"monitor_type": "file",
+		"repo_url":     "git@github.com:Matrix86/cloudwatcher.git",
+		"repo_branch":  "main",
+	}
+
+	err = s.SetConfig(config)
+	if err != nil {
+		fmt.Printf("ERROR: %s", err)
+		return
+	}
+
+	err = s.Start()
+	defer s.Close()
+	for {
+		select {
+		case v := <-s.GetEvents():
+			fmt.Printf("EVENT: %s %s\n", v.Key, v.TypeString())
+
+		case e := <-s.GetErrors():
+			fmt.Printf("ERROR: %s\n", e)
+		}
+	}
+}

examples/git/git_repo.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+	"github.com/Matrix86/cloudwatcher"
+	"time"
+)
+
+func main() {
+	s, err := cloudwatcher.New("git", "", 2*time.Second)
+	if err != nil {
+		fmt.Printf("ERROR: %s", err)
+		return
+	}
+
+	config := map[string]string{
+		"debug":           "true",
+		"monitor_type":    "repo",
+		"repo_url":        "git@github.com:Matrix86/cloudwatcher.git",
+		"assemble_events": "true",
+	}
+
+	err = s.SetConfig(config)
+	if err != nil {
+		fmt.Printf("ERROR: %s", err)
+		return
+	}
+
+	err = s.Start()
+	defer s.Close()
+	for {
+		select {
+		case v := <-s.GetEvents():
+			if v.Key == "commit" {
+				fmt.Println("New commits:")
+				for _, c := range v.Object.(*cloudwatcher.GitObject).Commits {
+					fmt.Printf("- hash=%s branch=%s : %s\n", c.Hash, c.Branch, c.Message)
+				}
+			} else if v.Key == "tag" {
+				fmt.Println("New tags:")
+				for _, c := range v.Object.(*cloudwatcher.GitObject).Commits {
+					fmt.Printf("- %s\n", c.Message)
+				}
+			}
+
+		case e := <-s.GetErrors():
+			fmt.Printf("ERROR: %s\n", e)
+		}
+	}
+}