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