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Tiltfile
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Tiltfile
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# -*- mode: Python -*-
# set defaults
envsubst_cmd = "./hack/tools/bin/envsubst"
kustomize_cmd = "./hack/tools/bin/kustomize"
settings = {
"deploy_cert_manager": True,
"preload_images_for_kind": True,
"enable_providers": ["docker"],
"kind_cluster_name": "kind",
}
# global settings
settings.update(read_json(
"tilt-settings.json",
default = {},
))
if settings.get("trigger_mode") == "manual":
trigger_mode(TRIGGER_MODE_MANUAL)
allow_k8s_contexts(settings.get("allowed_contexts"))
default_registry(settings.get("default_registry"))
always_enable_providers = ["core"]
extra_args = settings.get("extra_args", {})
providers = {
"core": {
"context": ".",
"image": "gcr.io/k8s-staging-cluster-api/cluster-api-controller",
"live_reload_deps": [
"main.go",
"go.mod",
"go.sum",
"api",
"cmd",
"controllers",
"errors",
"third_party",
"util",
"exp",
"feature",
],
"label": "CAPI",
"manager_name": "capi-controller-manager",
},
"kubeadm-bootstrap": {
"context": "bootstrap/kubeadm",
"image": "gcr.io/k8s-staging-cluster-api/kubeadm-bootstrap-controller",
"live_reload_deps": [
"main.go",
"api",
"controllers",
"internal",
"../../go.mod",
"../../go.sum",
],
"label": "CABPK",
"manager_name": "capi-kubeadm-bootstrap-controller-manager",
},
"kubeadm-control-plane": {
"context": "controlplane/kubeadm",
"image": "gcr.io/k8s-staging-cluster-api/kubeadm-control-plane-controller",
"live_reload_deps": [
"main.go",
"api",
"controllers",
"internal",
"../../go.mod",
"../../go.sum",
],
"label": "KCP",
"manager_name": "capi-kubeadm-control-plane-controller-manager",
},
"docker": {
"context": "test/infrastructure/docker",
"image": "gcr.io/k8s-staging-cluster-api/capd-manager",
"live_reload_deps": [
"main.go",
"../../go.mod",
"../../go.sum",
"api",
"cloudinit",
"controllers",
"docker",
"exp",
"third_party",
],
"additional_docker_helper_commands": """
RUN wget -qO- https://dl.k8s.io/v1.21.2/kubernetes-client-linux-amd64.tar.gz | tar xvz
""",
"additional_docker_build_commands": """
COPY --from=tilt-helper /go/kubernetes/client/bin/kubectl /usr/bin/kubectl
""",
"label": "CAPD",
"manager_name": "capd-controller-manager",
},
}
# Reads a provider's tilt-provider.json file and merges it into the providers map.
# A list of dictionaries is also supported by enclosing it in brackets []
# An example file looks like this:
# {
# "name": "aws",
# "config": {
# "image": "gcr.io/k8s-staging-cluster-api-aws/cluster-api-aws-controller",
# "live_reload_deps": [
# "main.go", "go.mod", "go.sum", "api", "cmd", "controllers", "pkg"
# ]
# }
# }
def load_provider_tiltfiles():
provider_repos = settings.get("provider_repos", [])
for repo in provider_repos:
file = repo + "/tilt-provider.json"
provider_details = read_json(file, default = {})
if type(provider_details) != type([]):
provider_details = [provider_details]
for item in provider_details:
provider_name = item["name"]
provider_config = item["config"]
if "context" in provider_config:
provider_config["context"] = repo + "/" + provider_config["context"]
else:
provider_config["context"] = repo
if "kustomize_config" not in provider_config:
provider_config["kustomize_config"] = True
if "go_main" not in provider_config:
provider_config["go_main"] = "main.go"
providers[provider_name] = provider_config
tilt_helper_dockerfile_header = """
# Tilt image
FROM golang:1.16.8 as tilt-helper
# Support live reloading with Tilt
RUN wget --output-document /restart.sh --quiet https://raw.githubusercontent.com/windmilleng/rerun-process-wrapper/master/restart.sh && \
wget --output-document /start.sh --quiet https://raw.githubusercontent.com/windmilleng/rerun-process-wrapper/master/start.sh && \
chmod +x /start.sh && chmod +x /restart.sh
"""
tilt_dockerfile_header = """
FROM gcr.io/distroless/base:debug as tilt
WORKDIR /
COPY --from=tilt-helper /start.sh .
COPY --from=tilt-helper /restart.sh .
COPY manager .
"""
# Configures a provider by doing the following:
#
# 1. Enables a local_resource go build of the provider's manager binary
# 2. Configures a docker build for the provider, with live updating of the manager binary
# 3. Runs kustomize for the provider's config/default and applies it
def enable_provider(name):
p = providers.get(name)
context = p.get("context")
go_main = p.get("go_main", "main.go")
label = p.get("label", name)
# Prefix each live reload dependency with context. For example, for if the context is
# test/infra/docker and main.go is listed as a dep, the result is test/infra/docker/main.go. This adjustment is
# needed so Tilt can watch the correct paths for changes.
live_reload_deps = []
for d in p.get("live_reload_deps", []):
live_reload_deps.append(context + "/" + d)
# Set up a local_resource build of the provider's manager binary. The provider is expected to have a main.go in
# manager_build_path or the main.go must be provided via go_main option. The binary is written to .tiltbuild/manager.
local_resource(
label.lower() + "_binary",
cmd = "cd " + context + ';mkdir -p .tiltbuild;CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags \'-extldflags "-static"\' -o .tiltbuild/manager ' + go_main,
deps = live_reload_deps,
labels = [label, "ALL.binaries"],
)
additional_docker_helper_commands = p.get("additional_docker_helper_commands", "")
additional_docker_build_commands = p.get("additional_docker_build_commands", "")
dockerfile_contents = "\n".join([
tilt_helper_dockerfile_header,
additional_docker_helper_commands,
tilt_dockerfile_header,
additional_docker_build_commands,
])
# Set up an image build for the provider. The live update configuration syncs the output from the local_resource
# build into the container.
entrypoint = ["sh", "/start.sh", "/manager"]
provider_args = extra_args.get(name)
if provider_args:
entrypoint.extend(provider_args)
docker_build(
ref = p.get("image"),
context = context + "/.tiltbuild/",
dockerfile_contents = dockerfile_contents,
target = "tilt",
entrypoint = entrypoint,
only = "manager",
live_update = [
sync(context + "/.tiltbuild/manager", "/manager"),
run("sh /restart.sh"),
],
)
if p.get("kustomize_config", True):
# Copy all the substitutions from the user's tilt-settings.json into the environment. Otherwise, the substitutions
# are not available and their placeholders will be replaced with the empty string when we call kustomize +
# envsubst below.
substitutions = settings.get("kustomize_substitutions", {})
os.environ.update(substitutions)
# Apply the kustomized yaml for this provider
yaml = str(kustomize_with_envsubst(context + "/config/default"))
k8s_yaml(blob(yaml))
manager_name = p.get("manager_name")
if manager_name:
k8s_resource(
workload = manager_name,
new_name = label.lower() + "_controller",
labels = [label, "ALL.controllers"],
)
# Users may define their own Tilt customizations in tilt.d. This directory is excluded from git and these files will
# not be checked in to version control.
def include_user_tilt_files():
user_tiltfiles = listdir("tilt.d")
for f in user_tiltfiles:
include(f)
# Enable core cluster-api plus everything listed in 'enable_providers' in tilt-settings.json
def enable_providers():
local("make kustomize envsubst")
user_enable_providers = settings.get("enable_providers", [])
union_enable_providers = {k: "" for k in user_enable_providers + always_enable_providers}.keys()
for name in union_enable_providers:
enable_provider(name)
def kustomize_with_envsubst(path):
return str(local("{} build {} | {}".format(kustomize_cmd, path, envsubst_cmd), quiet = True))
##############################
# Actual work happens here
##############################
include_user_tilt_files()
load_provider_tiltfiles()
load("ext://cert_manager", "deploy_cert_manager")
if settings.get("deploy_cert_manager"):
deploy_cert_manager(version = "v1.5.3")
enable_providers()