Migrate WordPress sites to HonestHosting via streamed, chunked, resumable exports.

Kyle Mott

<p>This plugin is installed on an external source WordPress site and handles:</p>
<ul>
<li>Configuration and destination site selection</li>
<li>Source-side validation and preflight checks</li>
<li>Scanning source files and database</li>
<li>Exporting data in streamed, memory-bounded chunks</li>
<li>Uploading chunks directly to S3 via presigned URLs</li>
<li>Notifying the HonestHosting backend when the import is ready</li>
<li>Resuming interrupted migrations</li>
<li>Optional scheduled incremental sync via WP-Cron</li>
</ul>
<h3>External services</h3>
<p>This plugin relies on two third-party services to perform site migrations to HonestHosting. Both are only contacted after the site administrator explicitly configures an import key and initiates a migration action from the plugin admin UI.</p>
<h4>HonestHosting API (api.honesthosting.io)</h4>
<p>The plugin communicates with the HonestHosting backend API at <code>https://api.honesthosting.io</code> to authenticate the site administrator’s import key, enumerate eligible destination sites, obtain presigned S3 upload URLs, submit preflight estimates, and signal that the destination is ready to import.</p>
<p>What data is sent and when:</p>
<ul>
<li>When the administrator validates an import key or loads the migration UI: the import key and source site URL.</li>
<li>During preflight: source PHP version, estimated <code>wp-content</code> total size and file count, database table summaries (table names, estimated row counts and byte sizes, engine types), and detected hosting-environment capabilities.</li>
<li>During export: session identifiers, chunk manifests, file paths and sizes, database table progress, and hash values used to validate uploaded chunks.</li>
<li>When upload completes: an import-ready signal containing the session metadata and destination site identifier.</li>
</ul>
<p>The import key is sent in the <code>X-HH-Site-Import-Key</code> request header over HTTPS.</p>
<p>This service is provided by HonestHosting:</p>
<ul>
<li>Terms and Conditions: https://www.honesthosting.io/terms-and-conditions/</li>
<li>Privacy Policy: https://www.honesthosting.io/privacy-policy/</li>
</ul>
<h4>Amazon S3 (presigned upload URLs)</h4>
<p>The plugin uploads file and database export chunks directly to Amazon S3 using presigned <code>PUT</code> URLs issued by the HonestHosting backend. Payloads are not proxied through the HonestHosting API; they are transmitted straight from the source site to S3 over HTTPS.</p>
<p>What data is sent and when:</p>
<ul>
<li>During export: each chunk body is <code>PUT</code> to the presigned S3 URL. File chunks contain raw file bytes from <code>wp-content/</code>; database chunks contain SQL INSERT statements generated from the site’s database tables. Requests carry only <code>Content-Type</code> and <code>Content-Length</code> headers — authentication is embedded in the presigned URL itself, so no account credentials or import keys are sent to S3.</li>
</ul>
<p>The S3 buckets used for migration storage are operated by HonestHosting on Amazon Web Services. AWS terms and privacy documents apply to the underlying transport and storage:</p>
<ul>
<li>AWS Service Terms: https://aws.amazon.com/service-terms/</li>
<li>AWS Privacy Notice: https://aws.amazon.com/privacy/</li>
</ul>


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