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68 lines
3.0 KiB
Bash
Executable File
68 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2020 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script generates a jpg image of our internal dependency graph.
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# It relies on go mod and dot to do so and should be run from K8s root.
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# TODO: Containerize the script to remove dependency issues with go mod and dot.
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# To generate graph with all Kubernetes modules run
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# ./hack/module-graph.sh
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# To generate graph with just staging modules run
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# ./hack/module-graph.sh staging
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error_exit()
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{
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echo "$1" 1>&2
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exit 1
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}
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staging_dependencies()
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{
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relevant_modules="(k8s.io/kubernetes|$(find staging/src/k8s.io -maxdepth 1 -mindepth 1 | sed -E 's|staging/src/k8s.io|k8s.io|g' | tr '\n' '|' | sed 's#|$##' ))"
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# Generating lines of the form " k8s_io_kubernetes -> k8s_io_api"
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# Use only the directories in staging
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# Trimming away version info
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# Replacing non DOT (graph description language) characters with underscores
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# Dedupe lines
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# Inserting needed arrow.
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# Indenting the line appropriately
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go mod graph | grep -E "^${relevant_modules}(@.*| )${relevant_modules}@.*$" | sed -E 's|@\S+ | |g' | sed -E 's|@\S+$||g' | sed -E 's/[\.\/\-]/_/g' | sort | uniq | sed -E 's| | -> |g' | sed -E 's|^| |g' >> _output/module-dependencies.dot || error_exit "Failed to generate staging dependencies in DOT file"
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}
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kubernetes_dependencies()
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{
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# Generating lines of the form " k8s_io_kubernetes -> k8s_io_api"
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# Excluding all non Kubernetes dependencies
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# Trimming away version info
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# Replacing non DOT (graph description language) characters with underscores
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# Dedupe lines
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# Inserting needed arrow.
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# Indenting the line appropriately
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go mod graph | grep -E "^.*k8s.io.*k8s.io.*$" | sed -E 's|@\S+ | |g' | sed -E 's|@\S+$||g' | sed -E 's/[\.\/\-]/_/g' | sort | uniq | sed -E 's| | -> |g' | sed -E 's|^| |g' >> _output/module-dependencies.dot || error_exit "Failed to generate kubernetes dependencies in DOT file"
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}
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mkdir -p _output
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echo "digraph module_dependencies {" > _output/module-dependencies.dot || error_exit "Failed to open DOT file"
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if [[ -n "$1" && $1 == "staging" ]]; then
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echo "Generating just staging modules"
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staging_dependencies
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else
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echo "Generating all Kubernetes modules"
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kubernetes_dependencies
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fi
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echo "}" >> _output/module-dependencies.dot || error_exit "Failed to close DOT file"
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dot -Gratio=1,1 -Nwidth=2 -Nheight=2 -Nfontsize=48 -Earrowsize=8 -Tjpg _output/module-dependencies.dot -o _output/module-dependencies.jpg || error_exit "Failed to generate graph from DOT file"
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