Support external credentials

Add base node with credentials

storage/ddb/69-ddbout.html

@@ -16,12 +16,8 @@
 
 <script type="text/x-red" data-template-name="ddb out">
     <div class="form-row">
-        <label for="node-input-accessKey"><i class="icon-briefcase"></i> Access Key</label>
+        <label for="node-input-credentials"><i class="icon-tag"></i> Credentials</label>
-        <input type="text" id="node-input-accessKey" placeholder="Access Key">
+        <input type="text" id="node-input-credentials">
-    </div>
-    <div class="form-row">
-        <label for="node-input-secretAccessKey"><i class="icon-briefcase"></i> Secret Access Key</label>
-        <input type="text" id="node-input-secretAccessKey" placeholder="Secret Access Key">
     </div>
     <div class="form-row">
         <label for="node-input-region"><i class="icon-th"></i> Region</label>
@@ -55,8 +51,7 @@
         category: "storage-output",
         color: "#ffaaaa",
         defaults: {
-            accessKey: { value: "", required: true },
+            credentials: { type: "awscredentials", required: true },
-            secretAccessKey: { value: "", required: true },
             region: { value: "us-east-1" },
             table: { value: "", required: true },
             name: { value: "" }
@@ -70,3 +65,57 @@
         }
     });
 </script>
+
+<script type="text/x-red" data-template-name="awscredentials">
+    <div class="form-row">
+        <label for="node-config-input-accessKey"><i class="icon-briefcase"></i> Access Key</label>
+        <input type="text" id="node-config-input-accessKey" placeholder="Access Key">
+    </div>
+    <div class="form-row">
+        <label for="node-config-input-secretAccessKey"><i class="icon-briefcase"></i> Secret Access Key</label>
+        <input type="text" id="node-config-input-secretAccessKey" placeholder="Secret Access Key">
+    </div>
+</script>
+
+<script type="text/javascript">
+    RED.nodes.registerType("awscredentials", {
+        category: "config",
+        defaults: {
+            accessKey: { value: "", required: true },
+            secretAccessKey: { value: "", required: true }
+        },
+        label: function() {
+            return this.accessKey;
+        },
+        oneditprepare: function() {
+            $.getJSON("awscredentials/" + this.id, function(data) {
+                if (data.accessKey) {
+                    $("#node-config-input-accessKey").val(data.accessKey);
+                }
+                if (data.secretAccessKey) {
+                    $("#node-config-input-secretAccessKey").val(data.secretAccessKey);
+                }
+            });
+        },
+        oneditsave: function() {
+            var newAccessKey = $("#node-config-input-accessKey").val();
+            var newSecretAccessKey = $("#node-config-input-secretAccessKey").val();
+            var credentials = {};
+            credentials.accessKey = newAccessKey;
+            credentials.secretAccessKey = newSecretAccessKey;
+            $.ajax({
+                url: "awscredentials/" + this.id,
+                type: "POST",
+                data: credentials,
+                success: function(result) {}
+            });
+        },
+        ondelete: function() {
+            $.ajax({
+                url: "awscredentials/" + this.id,
+                type: "DELETE",
+                success: function(result) {}
+            });
+        }
+    });
+</script>

storage/ddb/69-ddbout.js

@@ -16,18 +16,65 @@
 
 var RED = require(process.env.NODE_RED_HOME+"/red/red");
 var util = require("util");
+var querystring = require('querystring');
 var aws = require("aws-sdk");
 var attrWrapper = require("dynamodb-data-types").AttributeValue;
 
+function DDBNode(n) {
+    RED.nodes.createNode(this, n);
+    var credentials = RED.nodes.getCredentials(n.id);
+    if (credentials) {
+        this.accessKey = credentials.accessKey;
+        this.secretAccessKey = credentials.secretAccessKey;
+    }
+}
+RED.nodes.registerType("awscredentials", DDBNode);
+
+RED.app.get('/awscredentials/:id', function(req, res) {
+    var credentials = RED.nodes.getCredentials(req.params.id);
+    if (credentials) {
+        res.send(JSON.stringify({ accessKey: credentials.accessKey, secretAccessKey: credentials.secretAccessKey }));
+    } else {
+        res.send(JSON.stringify({}));
+    }
+});
+
+RED.app.delete('/awscredentials/:id', function(req, res) {
+    RED.nodes.deleteCredentials(req.params.id);
+    res.send(200);
+});
+
+RED.app.post('/awscredentials/:id', function(req, res) {
+    var body = "";
+    req.on("data", function(chunk) {
+        body += chunk;
+    });
+    req.on("end", function() {
+        var newCreds = querystring.parse(body);
+        var credentials = RED.nodes.getCredentials(req.params.id) || {};
+        if (newCreds.accessKey == null || newCreds.accessKey == "") {
+            delete credentials.accessKey;
+        } else {
+            credentials.accessKey = newCreds.accessKey || credentials.accessKey;
+        }
+        if (newCreds.secretAccessKey == null || newCreds.secretAccessKey == "") {
+            delete credentials.secretAccessKey;
+        } else {
+            credentials.secretAccessKey = newCreds.secretAccessKey || credentials.secretAccessKey;
+        }
+        RED.nodes.addCredentials(req.params.id, credentials);
+        res.send(200);
+    });
+});
+
 function DDBOutNode(n) {
     RED.nodes.createNode(this, n);
-    this.accessKey = n.accessKey;
+    this.credentials = RED.nodes.getNode(n.credentials);
-    this.secretAccessKey = n.secretAccessKey;
     this.region = n.region || "us-east-1";
     this.table = n.table;
 
-    aws.config.update({ accessKeyId: this.accessKey,
+    aws.config.update({ accessKeyId: this.credentials.accessKey,
-                        secretAccessKey: this.secretAccessKey,
+                        secretAccessKey: this.credentials.secretAccessKey,
                         region: this.region });
 
     var ddb = new aws.DynamoDB();