fixed

authentication-service/cmd/api/handlers.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
@@ -30,6 +32,15 @@ func (app *Config) Authenticate(w http.ResponseWriter, r *http.Request) {
 		app.errorJSON(w, errors.New("invalid credentials"), http.StatusBadRequest)
 		return
 	}
+
+	// log authentication
+
+	err = app.logRequest("authentication", fmt.Sprintf("%s is logged in", user.Email))
+	if err != nil {
+		app.errorJSON(w, err)
+		return
+	}
+
 	payload := jsonResponse{
 		Error:   false,
 		Message: fmt.Sprintf("%s %s is authorized to log in.", user.FirstName, user.LastName),
@@ -38,3 +49,30 @@ func (app *Config) Authenticate(w http.ResponseWriter, r *http.Request) {
 
 	app.writeJSON(w, http.StatusAccepted, payload)
 }
+
+func (app *Config) logRequest(name, data string) error {
+	var entry struct {
+		Name string `json:"name"`
+		Data string `json:"data"`
+	}
+
+	entry.Name = name
+	entry.Data = data
+
+	jsonData, _ := json.MarshalIndent(entry, "", "\t")
+
+	logServiceURL := "http://logger-service/log"
+
+	request, err := http.NewRequest("POST", logServiceURL, bytes.NewBuffer(jsonData))
+	if err != nil {
+		return err
+	}
+	request.Header.Add("Content-Type", "application/json")
+	client := &http.Client{}
+	_, err = client.Do(request)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

broker-service/cmd/api/handlers.go

@@ -57,8 +57,9 @@ func (app *Config) authenticate(w http.ResponseWriter, a AuthPayload) {
 		Input: a,
 		Addr:  "http://authentication-service/authenticate",
 		ErrCode: statusError{
-			Code: http.StatusUnauthorized,
-			Err:  errors.New("invalid credentials"),
+			ExpectedCode: http.StatusAccepted,
+			ErrCode:      http.StatusUnauthorized,
+			Err:          errors.New("invalid credentials"),
 		},
 		SuccessMsg: "Authenticated",
 	}
@@ -66,12 +67,14 @@ func (app *Config) authenticate(w http.ResponseWriter, a AuthPayload) {
 }
 
 func (app *Config) LogItem(w http.ResponseWriter, entry LogPayload) {
+	log.Println(entry)
 	loggerService := Microservice{
 		Input: entry,
 		Addr:  "http://logger-service/log",
 		ErrCode: statusError{
-			Code: http.StatusInternalServerError,
-			Err:  errors.New("internal error"),
+			ExpectedCode: http.StatusAccepted,
+			ErrCode:      http.StatusInternalServerError,
+			Err:          errors.New("internal error"),
 		},
 		SuccessMsg: "Logged!",
 	}
@@ -79,8 +82,9 @@ func (app *Config) LogItem(w http.ResponseWriter, entry LogPayload) {
 }
 
 type statusError struct {
-	Code int
-	Err  error
+	ExpectedCode int
+	ErrCode      int
+	Err          error
 }
 
 type Microservice struct {
@@ -97,6 +101,7 @@ func (app *Config) callService(w http.ResponseWriter, ms Microservice) {
 		app.errorJSON(w, err, http.StatusBadRequest)
 		return
 	}
+	log.Println(ms.Input)
 
 	// call the service
 	req, err := http.NewRequest(
@@ -120,8 +125,8 @@ func (app *Config) callService(w http.ResponseWriter, ms Microservice) {
 	log.Println(resp.Body)
 
 	// make sure we get back the correct status code
-	if resp.StatusCode != http.StatusAccepted {
-		app.errorJSON(w, ms.ErrCode.Err, ms.ErrCode.Code)
+	if resp.StatusCode != ms.ErrCode.ExpectedCode {
+		app.errorJSON(w, ms.ErrCode.Err, ms.ErrCode.ErrCode)
 		return
 	}
 

front-end/cmd/web/templates/test.page.gohtml

@@ -9,6 +9,7 @@
 
                 <a id="brokerBtn" class="btn btn-outline-secondary" href="javascript:void(0);">Test Broker</a>
                 <a id="authBrokerBtn" class="btn btn-outline-secondary" href="javascript:void(0);">Test Auth</a>
+                <a id="logBtn" class="btn btn-outline-secondary" href="javascript:void(0);">Test Log</a>
 
                 <div id="output" class="mt-5" style="outline: 1px solid silver; padding: 2em;">
                     <span class="text-muted">Output shows here...</span>
@@ -36,6 +37,7 @@
     <script>
         let brokerBtn = document.getElementById("brokerBtn");
         let authBrokerBtn = document.getElementById("authBrokerBtn");
+        let logBtn = document.getElementById("logBtn");
         let output = document.getElementById("output");
         let sent = document.getElementById("payload");
         let received = document.getElementById("received");
@@ -91,5 +93,38 @@
                     output.innerHTML += "<br><br>Error: " + error;
                 });
         });
+
+        logBtn.addEventListener("click", () => {
+            const payload = {
+                action: "log",
+                log: {
+                    name: "event",
+                    data: "some kind of data",
+                }
+            };
+            const headers = new Headers();
+            headers.append("Content-Type", "application/json");
+            const body = {
+                method: 'POST',
+                body: JSON.stringify(payload),
+                headers: headers,
+            }
+            fetch("http:\/\/localhost:8080/handle", body)
+            .then((response) => response.json())
+                .then((data) => {
+                    sent.innerHTML = JSON.stringify(payload, undefined, 4);
+                    received.innerHTML = JSON.stringify(data, undefined, 4);
+                    if (data.error) {
+                        console.log(data.message);
+                        output.innerHTML += `<br><strong>Error:</strong>: ${data.message}`;
+                    } else {
+                        output.innerHTML += `<br><strong>Response from broker service</strong>: ${data.message}`;
+                    }
+                })
+                .catch((error) => {
+                    output.innerHTML += "<br><br>Error: " + error;
+                });
+        });
+
     </script>
 {{end}}

logger-service/cmd/api/handlers.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"log"
 	"logger/data"
 	"net/http"
 )
@@ -18,6 +19,7 @@ func (app *Config) WriteLog(w http.ResponseWriter, r *http.Request) {
 		app.errorJSON(w, err)
 		return
 	}
+	log.Println("requestpayload", requestPayload)
 
 	// insert data
 	event := data.LogEntry{
@@ -25,6 +27,8 @@ func (app *Config) WriteLog(w http.ResponseWriter, r *http.Request) {
 		Data: requestPayload.Data,
 	}
 
+	log.Println("event", event)
+
 	err = app.Models.LogEntry.Insert(event)
 	if err != nil {
 		app.errorJSON(w, err)

logger-service/cmd/api/main.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"time"
 
+	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
@@ -42,6 +43,8 @@ func main() {
 		}
 	}()
 
+	client = mongoClient
+
 	app := Config{
 		Models: data.New(client),
 	}
@@ -75,6 +78,12 @@ func connectToMongo() (*mongo.Client, error) {
 		return nil, err
 	}
 
+	var result bson.M
+	if err = client.Database("admin").RunCommand(context.TODO(), bson.D{{Key: "ping", Value: 1}}).Decode(&result); err != nil {
+		log.Println("Error ping:", err)
+		return nil, err
+	}
+
 	log.Println("Connected to Mongo")
 
 	return client, nil

logger-service/data/models.go

@@ -35,13 +35,15 @@ type LogEntry struct {
 func (l *LogEntry) Insert(entry LogEntry) error {
 	collection := client.Database("logs").Collection("logs")
 
-	_, err := collection.InsertOne(context.TODO(), LogEntry{
+	newLog := LogEntry{
 		Name:      entry.Name,
 		Data:      entry.Data,
 		CreatedAt: time.Now(),
 		UpdatedAt: time.Now(),
-	})
+	}
+	_, err := collection.InsertOne(context.TODO(), newLog)
 	if err != nil {
+		log.Println("Insert error:", err)
 		return err
 	}
 	return nil

project/docker-compose.yml

@@ -51,9 +51,8 @@ services:
     ports:
       - "27017:27017"
     environment:
-      MONGO_INITDB_DATABASE: logs
-      MONGO_INITDB_USERNAME: admin
-      MONGO_INITDB_PASSWORD: password
+      MONGO_INITDB_ROOT_USERNAME: admin
+      MONGO_INITDB_ROOT_PASSWORD: password
     volumes:
       - ./db-data/mongo:/data/db
 
@@ -62,3 +61,14 @@ services:
     restart: always
     ports:
       - 8090:8080
+
+  mongo-express:
+    image: mongo-express
+    restart: always
+    ports:
+      - 8091:8081
+    environment:
+      ME_CONFIG_MONGODB_ADMINUSERNAME: admin
+      ME_CONFIG_MONGODB_ADMINPASSWORD: password
+      ME_CONFIG_MONGODB_URL: mongodb://admin:password@mongo:27017/
+      ME_CONFIG_BASICAUTH: false