skeleton for comps

src/plugins/comps/CompsTelemetryProvider.js

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+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2024, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is 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.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+export default class ConditionSetTelemetryProvider {
+  constructor(openmct) {
+    this.openmct = openmct;
+  }
+
+  isTelemetryObject(domainObject) {
+    return domainObject.type === 'comps';
+  }
+
+  supportsRequest(domainObject) {
+    return domainObject.type === 'comps';
+  }
+
+  supportsSubscribe(domainObject) {
+    return domainObject.type === 'comps';
+  }
+
+  async request(domainObject, options) {
+    // TODO: do some math in a worker
+    return { value: 0};
+  }
+
+  subscribe(domainObject, callback) {
+    // TODO: add to listener list and return a function to remove it
+    return () => {};
+  }
+}

src/plugins/comps/plugin.js

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+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2024, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is 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.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+import CompsTelemetryProvider from './CompsTelemetryProvider.js';
+
+export default function CompsPlugin() {
+  return function install(openmct) {
+    openmct.types.addType('comps', {
+      name: 'Comps',
+      key: 'comps',
+      description:
+        'Add one or more telemetry objects, apply a mathematical operation to them, and republish the result as a new telemetry object.',
+      creatable: true,
+      cssClass: 'icon-telemetry',
+      initialize: function (domainObject) {
+        domainObject.configuration = {
+        };
+        domainObject.composition = [];
+        domainObject.telemetry = {};
+      }
+    });
+    openmct.composition.addPolicy((parent, child) => {
+        return openmct.telemetry.isTelemetryObject(child);
+    });
+    openmct.telemetry.addProvider(new CompsTelemetryProvider(openmct));
+  };
+}