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86 lines
6.8 KiB
86 lines
6.8 KiB
#!/usr/bin/bash
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# Copyright 2020 The Bazel Authors. All rights reserved.
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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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# queryview-bottom-up.sh: A query script to strategize the bottom-up migration
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# approach of any target in the queryview workspace.
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#
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# Usage: ./queryview-bottom-up.sh <label of target in queryview>
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#
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# You can generate the queryview workspace using "m queryview". Note that the
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# queryview targets represent the fully configured build graph of Soong, so the
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# results may differ based on the product configuration and environment which
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# the queryview workspace was created in.
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#
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# This script obtains the transitive closure of a target, sorts its dependencies
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# based on minrank (shortest path from root to dep), and gets their module type.
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# This can help to figure out the exact module types we need to work on
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# converting first,
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#
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# This script produces the following (a sample):
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#
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# 0 //bionic/libc:libc--android_arm_armv7-a-neon_shared cc_library
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# 1 //bionic/libc:bionic_libc_license license
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# 1 //bionic/libc:libc--android_arm_armv7-a-neon_shared_29 cc_library
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# 1 //bionic/libc:libc--android_arm_armv7-a-neon_shared_30 cc_library
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# 1 //bionic/libc:libc--android_arm_armv7-a-neon_shared_current cc_library
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# 1 //bionic/libc:libc--android_arm_armv7-a-neon_static cc_library
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# 1 //bionic/libc:libc.arm.map genrule
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# 1 //bionic/libc:libc_common_shared--android_arm_armv7-a-neon_static cc_library_static
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# 1 //bionic/libc:libc_defaults cc_defaults
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# 1 //bionic/libc:libc_headers--android_arm_armv7-a-neon cc_library_headers
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# 1 //bionic/libc:libc_init_dynamic--android_arm_armv7-a-neon_static cc_library_static
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# 1 //bionic/libc:libc_native_allocator_defaults cc_defaults
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# 1 //bionic/libc:libc_sources_shared_arm filegroup
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# 1 //bionic/libc:libc_sources_shared filegroup
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# 1 //bionic/libc:libc_sources_static filegroup
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# 1 //bionic/libdl:libdl_android--android_arm_armv7-a-neon_static cc_library
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# 1 //bionic/libdl:libdl--android_arm_armv7-a-neon_shared cc_library
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# 1 //bionic/linker:ld-android--android_arm_armv7-a-neon_shared cc_library
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# 1 //external/gwp_asan:gwp_asan--android_arm_armv7-a-neon_static cc_library_static
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# 1 //external/gwp_asan:gwp_asan_headers--android_arm_armv7-a-neon cc_library_headers
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# 1 //external/scudo:libscudo--android_arm_armv7-a-neon_static cc_library_static
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# 1 //prebuilts/clang/host/linux-x86:libclang_rt.builtins-arm-android-exported--android_arm_armv7-a-neon_static libclang_rt_prebuilt_library_static
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# 1 //prebuilts/clang/host/linux-x86:libunwind-exported--android_arm_armv7-a-neon_static llvm_prebuilt_library_static
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# 1 //prebuilts/runtime/mainline/runtime/sdk:prebuilt_libc--android_arm_armv7-a-neon_shared cc_prebuilt_library_shared
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# 2 //bionic/libc:bionic_libc_platform_headers--android_arm_armv7-a-neon cc_library_headers
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# 2 //bionic/libc:crtbegin_so--android_arm_armv7-a-neon cc_object
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# 2 //bionic/libc:crtend_so--android_arm_armv7-a-neon cc_object
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# 2 //bionic/libc:libc_common--android_arm_armv7-a-neon_static cc_library_static
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# 2 //bionic/libc:libc_common_static--android_arm_armv7-a-neon_static cc_library_static
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# 2 //bionic/libc:libc_dynamic_dispatch--android_arm_armv7-a-neon_static cc_library_static
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# ...
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set -euo pipefail
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T=${1:-//bionic/libc:libc--android_arm_armv7-a-neon_shared}
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COMMON_BAZEL_OPTS="--noshow_loading_progress --color=no --curses=no"
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declare -a label_array
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declare -a minrank_array
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declare -a label_kind_array
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# Obtain the sorted list of labels in the transitive dependency closure of T.
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label_array=$(bazel query --config=queryview "deps($T)" --output=label $COMMON_BAZEL_OPTS 2>/dev/null | sort)
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# Obtain the sorted list of ranks based on the label as sort key. The rank value is the minimum distance between the root node to the dep.
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minrank_array=$(bazel query --config=queryview "deps($T)" --output=minrank $COMMON_BAZEL_OPTS 2>/dev/null | awk -e '{print $2 " " $1}' | sort | awk -e '{print $2}')
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# Obtain the sorted list of module types (label kinds) based on the label as sort key.
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label_kind_array=$(bazel query --config=queryview "deps($T)" --output=label_kind $COMMON_BAZEL_OPTS 2>/dev/null | awk -e '{print $3 " " $1}' | sort | awk -e '{print $2}')
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# Zip the lists together, tabularize it, and sort the list based on the rank
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# value of the dep. A rank value of 0 represents the root node.
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paste <(echo "${minrank_array[*]}") <(echo "${label_array[*]}") <(echo "${label_kind_array[*]}") | column -t | sort -n
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