Add support for application_name (#24)

#fix  #23
https://node-postgres.com/api/client

Author: Alkarex

locales/en-US/postgresql.json

@@ -8,6 +8,7 @@
 			"ssl": "SSL",
 			"user": "User",
 			"password": "Password",
+			"applicationName": "Application name",
 			"max": "Maximum size",
 			"idle": "Idle Timeout",
 			"connectionTimeout": "Connection Timeout",
@@ -23,6 +24,7 @@
 			"database": "dbExample",
 			"user": "dbUser",
 			"password": "dbPassword",
+			"applicationName": "",
 			"max": "10",
 			"idle": "1000 (Milliseconds)",
 			"connectionTimeout": "10000 (Milliseconds)"
@@ -33,6 +35,7 @@
 			"pool": "Pool"
 		},
 		"title": {
+			"applicationName": "The name of the application that created this Client instance.",
 			"max": "Maximum number of physical database connections that this connection pool can contain."
 		}
 	}

postgresql.html

@@ -61,6 +61,14 @@
 			</div>
 		</div>
 		<div id="postgresql-config-tab-pool" style="display: none;">
+			<div class="form-row">
+				<label data-i18n="[title]postgresql.title.applicationName" for="node-config-input-applicationName">
+					<i class="fa fa-tag"></i>
+					<span data-i18n="postgresql.label.applicationName"></span>
+				</label>
+				<input type="text" id="node-config-input-applicationName" data-i18n="[placeholder]postgresql.placeholder.applicationName" style="width: 80%;" />
+				<input type="hidden" id="node-config-input-applicationNameType" />
+			</div>
 			<div class="form-row">
 				<label data-i18n="[title]postgresql.title.max" for="node-config-input-max" style="width: 150px;">
 					<i class="fa fa-thermometer-full"></i>
@@ -121,6 +129,12 @@
 			sslFieldType: {
 				value: 'bool',
 			},
+			applicationName: {
+				value: '',
+			},
+			applicationNameType: {
+				value: 'str',
+			},
 			max: {
 				value: 10,
 			},
@@ -210,6 +224,11 @@
 					types: ['str', 'global', 'env'],
 					typeField: $('#node-config-input-passwordFieldType'),
 				});
+			$('#node-config-input-applicationName').typedInput({
+				default: 'str',
+				types: ['str', 'global', 'env'],
+				typeField: $('#node-config-input-applicationNameType'),
+			});
 			$('#node-config-input-max').typedInput({
 				default: 'num',
 				types: ['num', 'global'],

postgresql.js

@@ -63,6 +63,8 @@ module.exports = function (RED) {
 		node.databaseFieldType = n.databaseFieldType;
 		node.ssl = n.ssl;
 		node.sslFieldType = n.sslFieldType;
+		node.applicationName = n.applicationName;
+		node.applicationNameType = n.applicationNameType;
 		node.max = n.max;
 		node.maxFieldType = n.maxFieldType;
 		node.idle = n.idle;
@@ -81,6 +83,7 @@ module.exports = function (RED) {
 			port: getField(node, n.portFieldType, n.port),
 			database: getField(node, n.databaseFieldType, n.database),
 			ssl: getField(node, n.sslFieldType, n.ssl),
+			application_name: getField(node, n.applicationNameType, n.applicationName),
 			max: getField(node, n.maxFieldType, n.max),
 			idleTimeoutMillis: getField(node, n.idleFieldType, n.idle),
 			connectionTimeoutMillis: getField(node, n.connectionTimeoutFieldType, n.connectionTimeout),