/
commandSearch.ts
54 lines (50 loc) · 2.08 KB
/
commandSearch.ts
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/*
* Copyright © 2018 Atomist, Inc.
*
* 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.
*/
import {
Maker,
} from "@atomist/automation-client";
import { HandleCommand } from "@atomist/automation-client/lib/HandleCommand";
import { isCommandHandlerMetadata } from "@atomist/automation-client/lib/internal/metadata/metadata";
import { CommandHandlerMetadata } from "@atomist/automation-client/lib/metadata/automationMetadata";
import { toFactory } from "@atomist/automation-client/lib/util/constructionUtils";
import { FunctionalUnit } from "@atomist/sdm";
export interface HandlerInfo {
maker: Maker<HandleCommand<any>>;
instance: HandleCommand<any> & CommandHandlerMetadata;
}
/**
* Return command handlers with a given tag.
* Note this may not find all, but it will find those that know their
* own metadata, which is true of all those returned by generatorCommand
* and the underlying commandHandlerFrom
* @param {FunctionalUnit} unit
* @param {string} tag
*/
export function commandHandlersWithTag(unit: FunctionalUnit, tag: string): HandlerInfo[] {
return selfDescribingHandlers(unit)
.filter(hi => hi.instance.tags.some(t => t.name === tag));
}
/**
* Return command handlers along with their metadata
* Note this may not find all, but it will find those that know their
* own metadata
* @param {FunctionalUnit} unit
*/
export function selfDescribingHandlers(unit: FunctionalUnit): HandlerInfo[] {
return unit.commandHandlers
.map(maker => ({maker, instance: toFactory(maker)()}))
.filter(hi => isCommandHandlerMetadata(hi.instance)) as HandlerInfo[];
}