Added STATS_USER_ENV and STATS_PASS_ENV [fixes #186]

Author: vfarcic

Dockerfile

@@ -18,7 +18,7 @@ ENV CONNECTION_MODE="http-server-close" \
     MODE="default" \
     PROXY_INSTANCE_NAME="docker-flow" \
     SERVICE_NAME="proxy" \
-    STATS_USER="admin" STATS_PASS="admin" \
+    STATS_USER="admin" STATS_USER_ENV="STATS_USER" STATS_PASS="admin" STATS_PASS_ENV="STATS_PASS" \
     TIMEOUT_HTTP_REQUEST="5" TIMEOUT_HTTP_KEEP_ALIVE="15" TIMEOUT_CLIENT="20" TIMEOUT_CONNECT="5" TIMEOUT_QUEUE="30" TIMEOUT_SERVER="20" TIMEOUT_TUNNEL="3600" \
     USERS="" \
     EXTRA_FRONTEND="" \

docs/config.md

@@ -27,7 +27,9 @@ The following environment variables can be used to configure the *Docker Flow Pr
 |SERVICE_NAME       |The name of the service. It must be the same as the value of the `--name` argument used to create the proxy service. Used only in the *swarm* mode.|No|proxy|my-proxy|
 |SKIP_ADDRESS_VALIDATION|Whether to skip validating service address before reconfiguring the proxy.|No|false|true|
 |STATS_USER         |Username for the statistics page                          |No      |admin  |my-user|
+|STATS_USER_ENV     |The name of the environment variable that holds the username for the statistics page|No|STATS_USER|MY_USER|
 |STATS_PASS         |Password for the statistics page                          |No      |admin  |my-pass|
+|STATS_PASS_ENV     |The name of the environment variable that holds the password for the statistics page|No|STATS_PASS|MY_PASS|
 |TIMEOUT_CLIENT     |The client timeout in seconds                             |No      |20     |5      |
 |TIMEOUT_CONNECT    |The connect timeout in seconds                            |No      |5      |3      |
 |TIMEOUT_QUEUE      |The queue timeout in seconds                              |No      |30     |10     |

proxy/ha_proxy.go

@@ -198,8 +198,8 @@ func (m HaProxy) getConfigData() ConfigData {
 	d.TimeoutTunnel = GetSecretOrEnvVar("TIMEOUT_TUNNEL", "3600")
 	d.TimeoutHttpRequest = GetSecretOrEnvVar("TIMEOUT_HTTP_REQUEST", "5")
 	d.TimeoutHttpKeepAlive = GetSecretOrEnvVar("TIMEOUT_HTTP_KEEP_ALIVE", "15")
-	d.StatsUser = GetSecretOrEnvVar("STATS_USER", "admin")
-	d.StatsPass = GetSecretOrEnvVar("STATS_PASS", "admin")
+	d.StatsUser = GetSecretOrEnvVar(os.Getenv("STATS_USER_ENV"), "admin")
+	d.StatsPass = GetSecretOrEnvVar(os.Getenv("STATS_PASS_ENV"), "admin")
 	usersString := GetSecretOrEnvVar("USERS", "")
 	encryptedString := GetSecretOrEnvVar("USERS_PASS_ENCRYPTED", "")
 	if len(usersString) > 0 {

proxy/ha_proxy_test.go

@@ -88,6 +88,8 @@ config2 fe content
 config1 be content
 
 config2 be content`
+	os.Setenv("STATS_USER_ENV", "STATS_USER")
+	os.Setenv("STATS_PASS_ENV", "STATS_PASS")
 	suite.Run(t, s)
 }
 
@@ -1107,7 +1109,7 @@ func (s HaProxyTestSuite) Test_CreateConfigFromTemplates_ReplacesValuesWithEnvVa
 		{"STATS_PASS", "stats auth admin:admin", "stats auth admin:my-pass", "my-pass"},
 	}
 	for _, t := range tests {
-		timeoutOrig := os.Getenv(t.envKey)
+		envOrig := os.Getenv(t.envKey)
 		os.Setenv(t.envKey, t.value)
 		var actualData string
 		expectedData := fmt.Sprintf(
@@ -1124,7 +1126,43 @@ func (s HaProxyTestSuite) Test_CreateConfigFromTemplates_ReplacesValuesWithEnvVa
 
 		s.Equal(expectedData, actualData)
 
-		os.Setenv(t.envKey, timeoutOrig)
+		os.Setenv(t.envKey, envOrig)
+	}
+}
+
+func (s HaProxyTestSuite) Test_CreateConfigFromTemplates_UsersStatsUserEnvAndStatsPassEnv() {
+	tests := []struct {
+		envKey string
+		before string
+		after  string
+		value  string
+		envKeyName string
+	}{
+		{"MY_USER", "stats auth admin:admin", "stats auth my-user:admin", "my-user", "STATS_USER_ENV"},
+		{"MY_PASS", "stats auth admin:admin", "stats auth admin:my-pass", "my-pass", "STATS_PASS_ENV"},
+	}
+	for _, t := range tests {
+		os.Setenv(t.envKeyName, t.envKey)
+		envOrig := os.Getenv(t.envKey)
+		envKeyOrig := os.Getenv(t.envKeyName)
+		os.Setenv(t.envKey, t.value)
+		var actualData string
+		expectedData := fmt.Sprintf(
+			"%s%s",
+			strings.Replace(s.TemplateContent, t.before, t.after, -1),
+			s.ServicesContent,
+		)
+		writeFile = func(filename string, data []byte, perm os.FileMode) error {
+			actualData = string(data)
+			return nil
+		}
+
+		NewHaProxy(s.TemplatesPath, s.ConfigsPath).CreateConfigFromTemplates()
+
+		s.Equal(expectedData, actualData)
+
+		os.Setenv(t.envKey, envOrig)
+		os.Setenv(t.envKeyName, envKeyOrig)
 	}
 }