The following functions can be loaded from @bazel_tools//tools/build_defs/repo:cache.bzl.

Returns the default canonical id to use for downloads.

get_default_canonical_id

load("@bazel//tools/build_defs/repo:cache.bzl", "get_default_canonical_id")

get_default_canonical_id(repository_ctx, urls)

Returns the default canonical id to use for downloads.

Returns "" (empty string) when Bazel is run with --repo_env=BAZEL_HTTP_RULES_URLS_AS_DEFAULT_CANONICAL_ID=0.

e.g. ```python load("@bazel_tools//tools/build_defs/repo:cache.bzl", "get_default_canonical_id")

...

repository_ctx.download_and_extract(
    url = urls,
    integrity = integrity
    canonical_id = get_default_canonical_id(repository_ctx, urls),
),

### Parameters

<table class="params-table">
<colgroup>
<col class="col-param" />
<col class="col-description" />
</colgroup>
<tbody>
<tr id="get_default_canonical_id-repository_ctx">
<td><code>repository_ctx</code></td>
<td>

required.

<p>

The repository context of the repository rule calling this utility
function.

</p>
</td>
</tr>
<tr id="get_default_canonical_id-urls">
<td><code>urls</code></td>
<td>

required.

<p>

A list of URLs matching what is passed to `repository_ctx.download` and
`repository_ctx.download_and_extract`.

</p>
</td>
</tr>
</tbody>
</table>