[Dev] enable opensearch snapshot for Darwin

Enable the downloading of Darwin for running the command
`yarn opensearch snapshot`.

Darwin is not officially supported but snapshots are being
built here:
https://build.ci.opensearch.org/job/distribution-build-opensearch/

Issue resolved:
opensearch-project#2944

Signed-off-by: Kawika Avilla <kavilla414@gmail.com>

CHANGELOG.md

@@ -64,6 +64,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Multiple DataSource] Add support for SigV4 authentication ([#3058](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/3058))
 - Make build scripts find and use the latest version of Node.js that satisfies `engines.node` ([#3467](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/3467))
 - [Multiple DataSource] Refactor test connection to support SigV4 auth type ([#3456](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/3456))
+- [Darwin] Add support for Darwin for running OpenSearch snapshots with `yarn opensearch snapshot` ([#3537](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3537))
 
 ### 🐛 Bug Fixes
 

DEVELOPER_GUIDE.md

@@ -110,7 +110,7 @@ $ yarn osd clean
 
 OpenSearch Dashboards requires a running version of OpenSearch to connect to. In a separate terminal you can run the latest snapshot built using:
 
-_(Linux and Windows only - for MacOS, you'll need to [run OpenSearch from a tarball](#alternative---run-opensearch-from-tarball) instead)_
+_(Linux, Windows, Darwin only - for others, you'll need to [run OpenSearch from a tarball](#alternative---run-opensearch-from-tarball) instead)_
 ```bash
 $ yarn opensearch snapshot
 ```

packages/osd-opensearch/src/artifact.js

@@ -188,8 +188,8 @@ async function getArtifactSpecForSnapshotFromUrl(urlVersion, log) {
  const arch = process.arch === 'arm64' ? 'arm64' : 'x64';
  const extension = process.platform === 'win32' ? 'zip' : 'tar.gz';
 
- if (platform !== 'linux' && platform !== 'windows') {
- throw createCliError(`Snapshots are only available for Linux and Windows`);
+ if (platform !== 'linux' && platform !== 'windows' && platform !== 'darwin') {
+ throw createCliError(`Snapshots are only available for Linux, Windows, and Darwin`);
  }
 
  const latestUrl = `${DAILY_SNAPSHOTS_BASE_URL}/${desiredVersion}-SNAPSHOT`;

packages/osd-opensearch/src/artifact.test.js

@@ -163,10 +163,10 @@ describe('Artifact', () => {
  });
  });
 
- it('should throw when on a non-Linux or non-Windows platform', async () => {
+ it('should throw when on a non-Linux, non-Windows, non-Darwin platform', async () => {
  Object.defineProperties(process, {
  platform: {
- value: 'darwin',
+ value: 'android',
  },
  arch: {
  value: ORIGINAL_ARCHITECTURE,