node-red/nodes/core/20-inject.html

<!--
  Copyright 2013 IBM Corp.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

<script type="text/x-red" data-template-name="inject">
    <div class="form-row">
        <label for="node-input-topic"><i class="icon-tasks"></i> Topic</label>
        <input type="text" id="node-input-topic" placeholder="Topic">
    </div>
    <div class="form-row node-input-payload">
        <label for="node-input-payload"><i class="icon-envelope"></i> Payload</label>
        <input type="text" id="node-input-payload" placeholder="Payload">
    </div>
    <div class="form-row node-input-repeat">
        <label for="node-input-repeat"><i class="icon-repeat"></i> Repeat (S)</label>
        <input type="text" id="node-input-repeat" placeholder="0">
    </div>
    <div class="form-row">
        <label>&nbsp;</label>
        <input type="checkbox" id="node-input-once" placeholder="once" style="display: inline-block; width: auto; vertical-align: top;">
        <label for="node-input-once" style="width: 70%;">Fire once at start ?</label>
    </div>
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-tips">Tip: Injects Date.now() if no payload set.<br/>Repeat interval blank or 0 means no repeat.</div>
</script>

<script type="text/x-red" data-help-name="inject">
	<p>Pressing the button on the left side of the node allows a message on a topic to be injected into the flow. This is mainly for test purposes.</p>
	<p>If no payload is specified the payload is set to the current time in millisecs since 1970. This allows subsequent functions to perform time based actions.</p>
	<p>The repeat function does what it says on the tin and continuously sends the payload every x seconds.</p>
	<p>The Fire once at start option actually waits 50mS before firing to give other nodes a chance to instantiate properly.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('inject',{
        category: 'input',
        color:"#a6bbcf",
        defaults: {
            name: {value:""},
            topic: {value:""},
            payload: {value:""},
            repeat: {value:""},
            once: {value:false}
        },
        inputs:0,
        outputs:1,
        icon: "inject.png",
        label: function() {
            return this.name||this.topic||this.payload;
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        },
        button: {
            onclick: function() {
                var label = this.name||this.payload;
                d3.xhr("inject/"+this.id).post(function(err,resp) {
                        if (err) {
                            if (err.status == 404) {
                                RED.notify("<strong>Error</strong>: inject node not deployed","error");
                            } else {
                                RED.notify("<strong>Error</strong>: no response from server","error");
                            }
                        } else if (resp.status == 200) {
                            RED.notify("Successfully injected: "+label,"success");
                        } else {
                            if (resp) {
                                RED.notify("<strong>Error</strong>: unexpected response:"+resp,"error");
                            } else {
                                RED.notify("<strong>Error</strong>: no response from server","error");
                            }
                            console.log(err,resp);
                        }
                });
            }
        }
    });

</script>