mirror of https://github.com/node-red/node-red.git
67 lines
3.5 KiB
HTML
67 lines
3.5 KiB
HTML
<!--
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Copyright JS Foundation and other contributors, http://js.foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/html" data-help-name="link in">
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<p>Create virtual wires between flows.</p>
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<h3>Details</h3>
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<p>The node can be connected to any <code>link out</code> node that exists on any tab.
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Once connected, they behave as if they were wired together.</p>
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<p>The wires between link nodes are only displayed when a link node is selected.
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If there are any wires to other tabs, a virtual node is shown that can be clicked
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on to jump to the appropriate tab.</p>
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<p><b>Note: </b>Links cannot be created going into, or out of, a subflow.</p>
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</script>
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<script type="text/html" data-help-name="link out">
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<p>Create virtual wires between flows.</p>
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<h3>Details</h3>
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<p>This node can be configured to either send messages to all <code>link in</code>
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nodes it is connected to, or to send a response back to the <code>link call</code>
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node that triggered the flow.</p>
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<p>When in 'send to all' mode, the wires between link nodes are only displayed when
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the node is selected. If there are any wires to other tabs, a virtual node
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is shown that can be clicked on to jump to the appropriate tab.</p>
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<p><b>Note: </b>Links cannot be created going into, or out of, a subflow.</p>
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</script>
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<script type="text/html" data-help-name="link call">
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<p>Calls a flow that starts with a <code>link in</code> node and passes on the response.</p>
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<h3>Inputs</h3>
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<dl class="message-properties">
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<dt class="optional">target<span class="property-type">string</span></dt>
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<dd>When the option <b>Link Type</b> is set to "Dynamic target", set <code>msg.target</code> to the name of the
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<code>link in</code> node you wish to call.</dd>
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</dl>
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<h3>Details</h3>
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<p>This node can be connected to a <code>link in</code> node that exists on any tab.
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The flow connected to that node must end with a <code>link out</code> node configured
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in 'return' mode.</p>
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<p>When this node receives a message, it is passed to the connected <code>link in</code> node.
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It then waits for a response which it then sends on.</p>
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<p>If no response is received within the configured timeout, default 30 seconds, the node
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will log an error that can be caught using the <code>catch</code> node.</p>
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<p>When the option <b>Link Type</b> is set to "Dynamic target" <code>msg.target</code> can be used to call a
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<code>link in</code> by name or id.
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<ul>
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<li>If there is a <code>link in</code> nodes with the same id, it will be called</li>
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<li>If there are two or more <code>link in</code> nodes with the same name, an error will be raised</li>
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<li>A <code>link call</code> cannot call a <code>link in</code> node inside a subflow</li>
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</ul>
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</p>
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The flow connected to that node must end with a <code>link out</code> node configured
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in 'return' mode.</p>
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</script>
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