chore: get rid of hostname by providing unique auth header

README.MD

@@ -11,7 +11,6 @@ It will collect system stats and usage stats of all running swarm services and w
 - SUBMISSION_ENDPOINT: The endpoint to submit the stats to
 - AUTHORIZATION_HEADER_VAL (optional): The value of the authorization header
 - DOCKER_HOST: unix or tcp socket to connect to
-- HOSTNAME: The hostname of the server (not the container)
 
 **Volume Bind**
 - bind **<host docker socket path>** to -> **provided path in env DOCKER_HOST**

main.go

@@ -17,26 +17,20 @@ func main() {
 	* SUBMISSION_ENDPOINT: The endpoint to submit the stats to
 	* AUTHORIZATION_HEADER_VAL: The value of the authorization header
 	* DOCKER_HOST: unix or tcp socket to connect to
-	* HOSTNAME: The hostname of the host
 	* This will send the stats to the endpoint using the authorization header
 	*
 	* Configure Volume Mounts
 	* <docker socket of host>:/var/run/docker.sock
 	 */
 	submissionEndpoint := os.Getenv("SUBMISSION_ENDPOINT")
 	authorizationHeaderVal := os.Getenv("AUTHORIZATION_HEADER_VAL")
-	hostname := os.Getenv("HOSTNAME")
 	// reject if the submission endpoint is not set
 	if submissionEndpoint == "" {
 		panic("SUBMISSION_ENDPOINT is not set")
 	}
 	if os.Getenv("DOCKER_HOST") == "" {
 		panic("DOCKER_HOST is not set")
 	}
-	// if hostname is not set, fetch it from the system
-	if hostname == "" {
-		panic("HOSTNAME is not set")
-	}
 	_, _ = host.Stats() // intentionally called. just to initialize current network stats
 	// create a new docker client
 	dockerClient, err := client.NewClientWithOpts(client.FromEnv)
@@ -52,8 +46,6 @@ func main() {
 			log.Println("Error fetching stats: ", err)
 			continue
 		}
-		// set hostname
-		statsData.Hostname = hostname
 		// convert to json
 		jsonData, err := statsData.JSON()
 		if err != nil {

types.go

@@ -7,7 +7,6 @@ import (
 )
 
 type StatsData struct {
-	Hostname     string                            `json:"hostname"`
 	SystemStat   host.ResourceStats                `json:"system"`
 	ServiceStats map[string]*service.ResourceStats `json:"services"`
 	TimeStamp    uint64                            `json:"timestamp"`