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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -6,6 +6,6 @@ example_test_filegroup( | |
| "BUILD.bazel", | ||
| "docker.bzl", | ||
| "oci.bzl", | ||
| "py_layers.bzl", | ||
| "support.bzl", | ||
| ], | ||
| ) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,112 +1,45 @@ | ||
| """ | ||
| Wrapper macro to make three separate layers for python applications | ||
| based on: https://github.com/aspect-build/bazel-examples/blob/a25b6c0ba307545aff6c4b5feb4ae875d7d507f1/oci_python_image/py_layer.bzl | ||
| """ | ||
|
|
||
| load("@aspect_bazel_lib//lib:transitions.bzl", "platform_transition_binary") | ||
| load(":support.bzl", "defaults", "py_layers", "pycross_binary") | ||
| load("@rules_oci//oci:defs.bzl", "oci_image", "oci_tarball") | ||
| load(":py_layers.bzl", "py_layers") | ||
|
|
||
| def _make_entrypoint(toolchain_config_setting_label, workdir, cmd): | ||
| label = Label(toolchain_config_setting_label) | ||
| return "{workdir}/{cmd}.runfiles/{python_toolchains_workspace_name}_{python_toolchains_config_setting}/bin/python3".format( | ||
| workdir = workdir, | ||
| cmd = cmd, | ||
| python_toolchains_workspace_name = label.workspace_name, | ||
| python_toolchains_config_setting = label.name, | ||
| ) | ||
|
|
||
| def py_image( | ||
| name, | ||
| binary, | ||
| base = "@distroless_python3_debian12_oci", | ||
| tars = [], | ||
| config = "@python//:x86_64-unknown-linux-gnu", | ||
| target_platform = "@pycross_image//bazel/platforms:linux_x86_64", | ||
| base = "@pycross_image_base_oci", | ||
| layers = [], | ||
| **kwargs): | ||
| """ | ||
| pycross_oci_image is a macro that instantiates an oci_image from a py_binary rule | ||
| Given a pycross_oci_image rule `//my:image` wrapping a py_binary rule `//my:app`, the following targets are defined: | ||
| | Kind | Label | Description | | ||
| |---------------------------------|------------------------------|----------------------------------------------------------| | ||
| | oci_image rule | //my:image | The target container image | | ||
| | oci_tarball rule | //my:image.tar | Tarball rule that can be `bazel run` to `docker load` it | | ||
| | tar rule | //my:image.app_layer | Image layer for the application code | | ||
| | tar rule | //my:image.packages_layer | Image layer for site-packages | | ||
| | tar rule | //my:image.interpreter_layer | Image layer for the python3 interpreter | | ||
| | platform_transition_binary rule | //my:xapp | The transitioned "cross" py_binary | | ||
| | py_binary rule | //my:app | The source py_binary app | | ||
| `docker inspect` yields the following (subset): | ||
| ```json | ||
| [ | ||
| { | ||
| "RepoTags": [ | ||
| "my/app:latest", | ||
| ], | ||
| "Config": { | ||
| "Env": [ | ||
| "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", | ||
| "SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt", | ||
| "LANG=C.UTF-8" | ||
| ], | ||
| "Cmd": [ | ||
| "app" | ||
| ], | ||
| "WorkingDir": "/my/xapp", | ||
| "Entrypoint": [ | ||
| "/my/xapp/app.runfiles/python_x86_64-unknown-linux-gnu/bin/python3" | ||
| ], | ||
| }, | ||
| "Architecture": "amd64", | ||
| "Os": "linux" | ||
| } | ||
| ] | ||
| ``` | ||
| py_image is a macro that instantiates an oci_image from a py_binary rule | ||
| Args: | ||
| name: (String) name for the oci_image rule | ||
| binary: (Label) target label of the py_binary rule | ||
| base: (Label) target label of the base image | ||
| tars: (Label List) optional additional tars for the image | ||
| config: (Label) target label for the python toolchains repo config setting that determines the python entrypoint name | ||
| target_platform: (Label) target label for the image platform (for the platform_transition_binary rule) | ||
| **kwargs: (Dict) additional argument for the oci_image rule | ||
| name: name for the image rule | ||
| binary: target label of the py_binary rule | ||
| base: target label of the base image | ||
| layers: additional layer tarballs | ||
| **kwargs: additional arguments for the pycross_binary and oci_image rules | ||
| """ | ||
|
|
||
| name_tar = name + ".tar" | ||
| target = Label(binary) | ||
| cmd = target.name | ||
| cross_binary = cmd + "_cross_binary" | ||
| repo_tag = "%s/%s:latest" % (target.package, target.name) | ||
|
|
||
| workdir = "/%s/%s/%s" % (target.package, target.name, cross_binary) | ||
| entrypoint = _make_entrypoint(config, workdir, cmd) | ||
|
|
||
| layer_tars = py_layers(name, cross_binary) | ||
|
|
||
| platform_transition_binary( | ||
| name = cross_binary, | ||
| binary = binary, | ||
| target_platform = target_platform, | ||
| metadata = pycross_binary( | ||
| binary, | ||
| cross_name_prefix = kwargs.pop("cross_name_prefix", "y"), | ||
| python_config_setting = kwargs.pop("python_config_setting", defaults.python_config_setting), | ||
| target_platform = kwargs.pop("target_platform", defaults.target_platform), | ||
| image_tag = kwargs.pop("tag", defaults.cross_name_prefix), | ||
| repo_tag = kwargs.pop("repo_tag", None), | ||
| ) | ||
|
|
||
| tars = py_layers(name, metadata.cross_binary_name) | ||
|
|
||
| oci_image( | ||
| name = name, | ||
| tars = tars + layer_tars, | ||
| workdir = workdir, | ||
| entrypoint = [entrypoint], | ||
| cmd = [cmd], | ||
| base = base, | ||
| tars = layers + tars, | ||
| workdir = metadata.workdir, | ||
| entrypoint = metadata.entrypoint, | ||
| cmd = metadata.cmd, | ||
| **kwargs | ||
| ) | ||
|
|
||
| oci_tarball( | ||
| name = name_tar, | ||
| name = name + ".tar", | ||
| image = name, | ||
| repo_tags = [repo_tag], | ||
| repo_tags = [metadata.repo_tag], | ||
| ) |
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