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break out oci_image_layer into separate file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| """ oci_image_layer """ | ||
|
|
||
| load("//oci:providers.bzl", "OCIDescriptor") | ||
|
|
||
| def oci_image_layer( | ||
| *, | ||
| name, | ||
| directory = "/", # str | ||
| file_map = None, # dict[label, str] | ||
| files = None, # list[label] | ||
| symlinks = None, # dict[str, str] | ||
| **kwargs): | ||
| # -> None | ||
| """ oci_image_layer | ||
| Args: | ||
| name: A unique name for this rule | ||
| directory: Directory in the tarball to place the `files` | ||
| file_map: Dictionary of file -> file location in tarball | ||
| files: List of files to include under `directory` | ||
| symlinks: Dictionary of symlink -> target entries to place in the tarball | ||
| **kwargs: Additional arguments to pass to the rule, e.g. `tags` or `visibility` | ||
| """ | ||
| file_map = file_map or {} | ||
| files = files or [] | ||
| symlinks = symlinks or {} | ||
|
|
||
| if len(files) == 0 and len(file_map) == 0: | ||
| fail("At least one of `files` or `file_map` must be provided") | ||
|
|
||
| _oci_image_layer( | ||
| name = name, | ||
| directory = directory, | ||
| file_map = file_map, | ||
| files = files, | ||
| symlinks = symlinks, | ||
| **kwargs | ||
| ) | ||
|
|
||
| def _impl(ctx): | ||
| toolchain = ctx.toolchains["//oci:toolchain"] | ||
|
|
||
| descriptor_file = ctx.actions.declare_file("{}.descriptor.json".format(ctx.label.name)) | ||
|
|
||
| ctx.actions.run( | ||
| executable = toolchain.sdk.ocitool, | ||
| arguments = [ | ||
| "create-layer", | ||
| "--out={}".format(ctx.outputs.layer.path), | ||
| "--outd={}".format(descriptor_file.path), | ||
| "--dir={}".format(ctx.attr.directory), | ||
| "--bazel-label={}".format(ctx.label), | ||
| ] + | ||
| ["--file={}".format(f.path) for f in ctx.files.files] + | ||
| ["--symlink={}={}".format(k, v) for k, v in ctx.attr.symlinks.items()] + | ||
| ["--file-map={}={}".format(k.files.to_list()[0].path, v) for k, v in ctx.attr.file_map.items()], | ||
| inputs = ctx.files.files + ctx.files.file_map, | ||
| outputs = [ | ||
| descriptor_file, | ||
| ctx.outputs.layer, | ||
| ], | ||
| ) | ||
|
|
||
| return [ | ||
| DefaultInfo( | ||
| files = depset([ctx.outputs.layer, descriptor_file]), | ||
| ), | ||
| OCIDescriptor( | ||
| descriptor_file = descriptor_file, | ||
| file = ctx.outputs.layer, | ||
| ), | ||
| ] | ||
|
|
||
| _oci_image_layer = rule( | ||
| implementation = _impl, | ||
| attrs = { | ||
| "files": attr.label_list(allow_files = True), | ||
| "directory": attr.string(), | ||
| "symlinks": attr.string_dict(), | ||
| "file_map": attr.label_keyed_string_dict(allow_files = True), | ||
| }, | ||
| toolchains = ["//oci:toolchain"], | ||
| outputs = { | ||
| "layer": "%{name}-layer.tar.gz", | ||
| }, | ||
| ) |