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dotnet-installer/eng/vmr-sync.sh

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#!/bin/bash
### This script is used for synchronizing the dotnet/dotnet VMR locally. This means pulling new
### code from various repositories into the 'dotnet/dotnet' repository.
###
### The script is used during CI to ingest new code based on dotnet/installer but it can also help
### for reproducing potential failures during installer's PRs, namely to fix the Source-Build.
### Another usecase is to try manually synchronizing a given commit of some repo into the VMR and
### trying to Source-Build the VMR. This can help when fixing the Source-Build but using a commit
### from a not-yet merged branch (or fork) to test the fix will help.
###
### The tooling that synchronizes the VMR will need to clone the various repositories into a temporary
### folder. These clones can be re-used in future synchronizations so it is advised you dedicate a
### folder to this to speed up your re-runs.
###
### USAGE:
### Synchronize current installer and all dependencies into a local VMR:
### ./vmr-sync.sh --vmr "$HOME/repos/dotnet" --tmp "$HOME/repos/tmp"
###
### Synchronize the VMR to a specific commit of dotnet/runtime using custom fork:
### ./vmr-sync.sh \
### --repository runtime:e7e71da303af8dc97df99b098f21f526398c3943 \
### --remote runtime:https://github.com/yourfork/runtime \
### --tmp "$HOME/repos/tmp"
###
### Options:
### -t, --tmp, --tmp-dir PATH
### Required. Path to the temporary folder where repositories will be cloned
###
### -b, --branch, --vmr-branch BRANCH_NAME
### Optional. Branch of the 'dotnet/dotnet' repo to synchronize. The VMR will be checked out to this branch
###
### --debug
### Optional. Turns on the most verbose logging for the VMR tooling
###
### --readme-template
### Optional. Template for VMRs README.md used for regenerating the file to list the newest versions of
### components.
### Defaults to src/VirtualMonoRepo/README.template.md
###
### --recursive
### Optional. Recursively synchronize all the source build dependencies (declared in Version.Details.xml)
### This is used when performing the full synchronization during installer's CI and the final VMR sync.
### Defaults to false unless no repository is supplied in which case a recursive sync of installer is performed.
###
### --remote name:URI
### Optional. Additional remote to use during the synchronization
### This can be used to synchronize to a commit from a fork of the repository
### Example: 'runtime:https://github.com/yourfork/runtime'
###
### -r, --repository name:GIT_REF
### Optional. Repository + git ref separated by colon to synchronize to.
### This can be a specific commit, branch, tag.
### If not supplied, the revision of the parent installer repository of this script will be used (recursively).
### Example: 'runtime:my-branch-name'
###
### --tpn-template
### Optional. Template for the header of VMRs THIRD-PARTY-NOTICES file.
### Defaults to src/VirtualMonoRepo/THIRD-PARTY-NOTICES.template.txt
###
### --azdev-pat
### Optional. Azure DevOps PAT to use for cloning private repositories.
###
### -v, --vmr, --vmr-dir PATH
### Optional. Path to the dotnet/dotnet repository. When null, gets cloned to the temporary folder
source="${BASH_SOURCE[0]}"
# resolve $source until the file is no longer a symlink
while [[ -h "$source" ]]; do
scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
source="$(readlink "$source")"
# if $source was a relative symlink, we need to resolve it relative to the path where the
# symlink file was located
[[ $source != /* ]] && source="$scriptroot/$source"
done
scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
function print_help () {
sed -n '/^### /,/^$/p' "$source" | cut -b 5-
}
COLOR_RED=$(tput setaf 1 2>/dev/null || true)
COLOR_CYAN=$(tput setaf 6 2>/dev/null || true)
COLOR_CLEAR=$(tput sgr0 2>/dev/null || true)
COLOR_RESET=uniquesearchablestring
FAILURE_PREFIX='> '
function fail () {
echo "${COLOR_RED}$FAILURE_PREFIX${1//${COLOR_RESET}/${COLOR_RED}}${COLOR_CLEAR}" >&2
}
function highlight () {
echo "${COLOR_CYAN}$FAILURE_PREFIX${1//${COLOR_RESET}/${COLOR_CYAN}}${COLOR_CLEAR}"
}
installer_dir=$(realpath "$scriptroot/../")
tmp_dir=''
vmr_dir=''
vmr_branch=''
repository=''
additional_remotes=''
recursive=false
verbosity=verbose
readme_template="$installer_dir/src/VirtualMonoRepo/README.template.md"
tpn_template="$installer_dir/src/VirtualMonoRepo/THIRD-PARTY-NOTICES.template.txt"
azdev_pat=''
# If installer is a repo, we're in an installer and not in the dotnet/dotnet repo
if [[ -d "$installer_dir/.git" ]]; then
additional_remotes="installer:$installer_dir"
fi
while [[ $# -gt 0 ]]; do
opt="$(echo "$1" | tr "[:upper:]" "[:lower:]")"
case "$opt" in
-t|--tmp|--tmp-dir)
tmp_dir=$2
shift
;;
-v|--vmr|--vmr-dir)
vmr_dir=$2
shift
;;
-b|--branch|--vmr-branch)
vmr_branch=$2
shift
;;
-r|--repository)
repository=$2
shift
;;
--recursive)
recursive=true
;;
--remote)
additional_remotes="$additional_remotes,$2"
shift
;;
--readme-template)
readme_template=$2
shift
;;
--tpn-template)
tpn_template=$2
shift
;;
--azdev-pat)
azdev_pat=$2
shift
;;
-d|--debug)
verbosity=debug
;;
-h|--help)
print_help
exit 0
;;
*)
fail "Invalid argument: $1"
print_help
exit 1
;;
esac
shift
done
# Validation
if [[ ! -d "$installer_dir" ]]; then
fail "Directory '$installer_dir' does not exist. Please specify the path to the dotnet/installer repo"
exit 1
fi
if [[ -z "$tmp_dir" ]]; then
fail "Missing --tmp-dir argument. Please specify the path to the temporary folder where the repositories will be cloned"
exit 1
fi
if [[ ! -f "$readme_template" ]]; then
fail "File '$readme_template' does not exist. Please specify a valid path to the README template"
exit 1
fi
if [[ ! -f "$tpn_template" ]]; then
fail "File '$tpn_template' does not exist. Please specify a valid path to the THIRD-PARTY-NOTICES template"
exit 1
fi
# Sanitize the input
# Default when no repository is provided
if [[ -z "$repository" ]]; then
repository="installer:$(git -C "$installer_dir" rev-parse HEAD)"
recursive=true
fi
if [[ -z "$vmr_dir" ]]; then
vmr_dir="$tmp_dir/dotnet"
fi
if [[ ! -d "$tmp_dir" ]]; then
mkdir -p "$tmp_dir"
fi
if [[ "$verbosity" == "debug" ]]; then
set -x
fi
# Prepare the VMR
if [[ ! -d "$vmr_dir" ]]; then
highlight "Cloning 'dotnet/dotnet' into $vmr_dir.."
git clone https://github.com/dotnet/dotnet "$vmr_dir"
if [[ -n "$vmr_branch" ]]; then
git -C "$vmr_dir" switch -c "$vmr_branch"
fi
else
if ! git -C "$vmr_dir" diff --quiet; then
fail "There are changes in the working tree of $vmr_dir. Please commit or stash your changes"
exit 1
fi
if [[ -n "$vmr_branch" ]]; then
highlight "Preparing $vmr_dir"
git -C "$vmr_dir" checkout "$vmr_branch"
git -C "$vmr_dir" pull
fi
fi
set -e
# Prepare darc
highlight 'Installing .NET, preparing the tooling..'
source "$scriptroot/common/tools.sh"
InitializeDotNetCli true
dotnet=$(realpath "$scriptroot/../.dotnet/dotnet")
"$dotnet" tool restore
highlight "Starting the synchronization of '$repository'.."
set +e
recursive_arg=''
if [[ "$recursive" == "true" ]]; then
recursive_arg="--recursive"
fi
if [[ -n "$additional_remotes" ]]; then
additional_remotes="--additional-remotes $additional_remotes"
fi
if [[ -n "$azdev_pat" ]]; then
azdev_pat="--azdev-pat $azdev_pat"
fi
# Synchronize the VMR
"$dotnet" darc vmr update \
--vmr "$vmr_dir" \
--tmp "$tmp_dir" \
$azdev_pat \
--$verbosity \
$recursive_arg \
--readme-template "$readme_template" \
--tpn-template "$tpn_template" \
$additional_remotes \
"$repository"
if [[ $? == 0 ]]; then
highlight "Synchronization succeeded"
else
fail "Synchronization of dotnet/dotnet to '$repository' failed!"
fail "'$vmr_dir' is left in its last state (re-run of this script will reset it)."
fail "Please inspect the logs which contain path to the failing patch file (use --debug to get all the details)."
fail "Once you make changes to the conflicting VMR patch, commit it locally and re-run this script."
exit 1
fi
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