cadence-web/server/router/routes/workflow-export-handler.js

Cadence Web UI

// Copyright (c) 2021-2024 Uber Technologies Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

const losslessJSON = require('lossless-json');

const workflowExportHandler = async ctx => {
  let nextPageToken;

  do {
    const page = await ctx.cadence.exportHistory({ nextPageToken });

    if (!nextPageToken) {
      ctx.status = 200;
    }

    ctx.res.write(
      (nextPageToken ? ',' : '[') +
        page.history.events.map(losslessJSON.stringify).join(',')
    );
    nextPageToken = page.nextPageToken;
  } while (nextPageToken);

  ctx.res.write(']');
  ctx.body = '';
};

module.exports = workflowExportHandler;