rules_ytt's Introduction

Carvel ytt rules for Bazel

Setup

Add to WORKSPACE file.

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "com_github_ebay_rules_ytt",
    sha256 = "0232522fd7a07d2eb0a47fe4ec3a6dc8bc8e0bcbaa8abd658c6be53a34f5bd76",
    strip_prefix = "rules_ytt-0.1.0",
    urls = [
        "https://github.com/eBay/rules_ytt/releases/download/v0.1.0/rules_ytt-0.1.0.zip",
    ],
)

load("@com_github_ebay_rules_ytt//:deps.bzl", "ytt_rules_dependencies")

ytt_rules_dependencies()

Usage

Add to BUILD file:

load("@com_github_ebay_rules_ytt//:def.bzl", "ytt")
load("@io_bazel_rules_docker//go:image.bzl", "go_image")

go_image(
    name = "image",
    srcs = ["main.go"],
    importpath = "...",
)

ytt(
    name = "manifests",
    srcs = [
        ":base.yaml",
        ":defaults.yaml",
        ":values.yaml",
    ],
    image = ":image.digest",
)

Which is equivalent to

ytt -f base.yaml -f defaults.yaml -f values.yaml --dangerous-allow-all-symlink-destinations

bazel build //:manifests - generates yaml files and store it in cache.
bazel run //:manifests - prints generated yaml files to stdout.
bazel run //:manifests | kubectl -n <namespace> -f - - applies generated manifests to k8s cluster.

Image digest is available inside yaml templates as data.values.image_digest.

Commands

Here

LICENSE

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

See LICENSE for more details.

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