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Makefile-plugins.mk
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Makefile-plugins.mk
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# Copyright 2022 The Kubernetes Authors.
# SPDX-License-Identifier: Apache-2.0
### Kustomize plugin rules.
#
# The rules to deal with builtin plugins are a bit
# complicated because
#
# - Every builtin plugin is a Go plugin -
# meaning it gets its own module directory
# (outside of the api module) with Go
# code in a 'main' package per Go plugin rules.
# - kustomize locates plugins using the
# 'apiVersion' and 'kind' fields from the
# plugin config file.
# - k8s wants CamelCase in 'kind' fields.
# - The module name (the last name in the path)
# must be the lowercased 'kind' of the
# plugin because Go and related tools
# demand lowercase in import paths, but
# allow CamelCase in file names.
# - the generated code must live in the api
# module (it's linked into the api).
# Where all generated builtin plugin code should go.
pGen=api/internal/builtins
# Where the builtin Go plugin modules live.
pSrc=plugin/builtin
_builtinplugins = \
AnnotationsTransformer.go \
ConfigMapGenerator.go \
IAMPolicyGenerator.go \
HashTransformer.go \
ImageTagTransformer.go \
LabelTransformer.go \
LegacyOrderTransformer.go \
NamespaceTransformer.go \
PatchJson6902Transformer.go \
PatchStrategicMergeTransformer.go \
PatchTransformer.go \
PrefixTransformer.go \
SuffixTransformer.go \
ReplacementTransformer.go \
ReplicaCountTransformer.go \
SecretGenerator.go \
ValueAddTransformer.go \
HelmChartInflationGenerator.go
# Maintaining this explicit list of generated files, and
# adding it as a dependency to a few targets, to assure
# they get recreated if deleted. The rules below on how
# to make them don't, by themselves, assure they will be
# recreated if deleted.
builtinplugins = $(patsubst %,$(pGen)/%,$(_builtinplugins))
# These rules are verbose, but assure that if a source file
# is modified, the corresponding generated file, and only
# that file, will be recreated.
$(pGen)/AnnotationsTransformer.go: $(pSrc)/annotationstransformer/AnnotationsTransformer.go
$(pGen)/ConfigMapGenerator.go: $(pSrc)/configmapgenerator/ConfigMapGenerator.go
$(pGen)/GkeSaGenerator.go: $(pSrc)/gkesagenerator/GkeSaGenerator.go
$(pGen)/HashTransformer.go: $(pSrc)/hashtransformer/HashTransformer.go
$(pGen)/ImageTagTransformer.go: $(pSrc)/imagetagtransformer/ImageTagTransformer.go
$(pGen)/LabelTransformer.go: $(pSrc)/labeltransformer/LabelTransformer.go
$(pGen)/LegacyOrderTransformer.go: $(pSrc)/legacyordertransformer/LegacyOrderTransformer.go
$(pGen)/NamespaceTransformer.go: $(pSrc)/namespacetransformer/NamespaceTransformer.go
$(pGen)/PatchJson6902Transformer.go: $(pSrc)/patchjson6902transformer/PatchJson6902Transformer.go
$(pGen)/PatchStrategicMergeTransformer.go: $(pSrc)/patchstrategicmergetransformer/PatchStrategicMergeTransformer.go
$(pGen)/PatchTransformer.go: $(pSrc)/patchtransformer/PatchTransformer.go
$(pGen)/PrefixTransformer.go: $(pSrc)/prefixtransformer/PrefixTransformer.go
$(pGen)/SuffixTransformer.go: $(pSrc)/suffixtransformer/SuffixTransformer.go
$(pGen)/ReplacementTransformer.go: $(pSrc)/replacementtransformer/ReplacementTransformer.go
$(pGen)/ReplicaCountTransformer.go: $(pSrc)/replicacounttransformer/ReplicaCountTransformer.go
$(pGen)/SecretGenerator.go: $(pSrc)/secretgenerator/SecretGenerator.go
$(pGen)/ValueAddTransformer.go: $(pSrc)/valueaddtransformer/ValueAddTransformer.go
$(pGen)/HelmChartInflationGenerator.go: $(pSrc)/helmchartinflationgenerator/HelmChartInflationGenerator.go
# The (verbose but portable) Makefile way to convert to lowercase.
toLowerCase = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))
$(pGen)/%.go: $(MYGOBIN)/pluginator
@echo "generating $*"
( \
set -e; \
cd $(pSrc)/$(call toLowerCase,$*); \
go generate .; \
cd ../../../$(pGen); \
$(MYGOBIN)/goimports -w $*.go \
)
# Target is for debugging.
.PHONY: generate-kustomize-builtin-plugins
generate-kustomize-builtin-plugins: $(builtinplugins)
.PHONY: build-kustomize-external-go-plugin
build-kustomize-external-go-plugin:
./hack/buildExternalGoPlugins.sh ./plugin
.PHONY: clean-kustomize-external-go-plugin
clean-kustomize-external-go-plugin:
./hack/buildExternalGoPlugins.sh ./plugin clean