actions/cascading-pr
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allow running on a ref instead of a PR

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When running from a PR, the ref is the head of the PR in the origin
repository. The PR is used to:

* display comments about the location of the destination PR
* asynchronously close / merge the destination PR when something
  happens in the origin PR

When only the ref is available, the destination PR must be closed and
the corresponding branch destroyed immediately after it concludes
because there is no convenient way to know what or when something
else will happen.
This commit is contained in:
Earl Warren 2024-01-02 18:39:58 +01:00
parent 0e9a4e846b
commit 0c3c8b591b
No known key found for this signature in database
GPG key ID: 0579CB2928A78A00
12 changed files with 326 additions and 85 deletions
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54
cascading-pr.sh
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@ -187,7 +187,7 @@ function git_checkout() {
(
cd $TMPDIR/$direction
if [[ "$ref" =~ ^refs/ ]] ; then
git fetch ${remote} +$ref:$ref
git fetch --update-head-ok ${remote} +$ref:$ref
else
ref=${remote}/$ref
fi
@ -305,7 +305,7 @@ function update() {
local update=${options[update]}
if ! [[ "$update" =~ ^/ ]] ; then
local d
if $(pr_from_fork origin); then
if $(origin_has_pr) && $(pr_from_fork origin); then
local default_branch=$(default_branch origin)
log_info "PR is from a forked repository, using the default branch $default_branch to obtain the update script"
d=$TMPDIR/update
@ -316,7 +316,13 @@ function update() {
update=$d/$update
fi
cd $TMPDIR
$update $TMPDIR/destination $TMPDIR/destination-pr.json $TMPDIR/origin $TMPDIR/origin-pr.json
local origin_info
if $(origin_has_pr); then
origin_info=$TMPDIR/origin-pr.json
else
origin_info="${options[origin_ref]}"
fi
$update $TMPDIR/destination $TMPDIR/destination-pr.json $TMPDIR/origin $origin_info
)
local remote_head=origin
if ${options[destination_is_fork]} ; then
@ -360,8 +366,7 @@ function finalize_options() {
options[origin_scheme]=$(scheme ${options[origin_url]})
options[origin_host_port]=$(host_port ${options[origin_url]})
set_git_url origin origin_clone ${options[origin_repo]}
options[origin_head]=refs/pull/${options[origin_pr]}/head
origin_sanity_check
set_origin_head
options[destination_api]=${options[destination_url]}/api/v1/repos/${options[destination_repo]}
options[destination_scheme]=$(scheme ${options[destination_url]})
@ -369,7 +374,7 @@ function finalize_options() {
set_git_url destination destination_clone ${options[destination_repo]}
options[destination_base]=${options[destination_branch]}
: ${options[prefix]:=${options[origin_repo]}}
options[destination_head]=${options[prefix]}-${options[origin_pr]}
set_destination_head
if test "${options[destination_fork_repo]}"; then
fork_sanity_check
@ -384,11 +389,39 @@ function finalize_options() {
}
function run() {
local state=$(pr_state origin)
repo_login origin
repo_login destination
if $(origin_has_pr); then
run_origin_pr
else
run_origin_ref
fi
}
function run_origin_ref() {
log_info "update or create the cascade branch and PR"
checkout
update
local sha=$(sha_pushed destination)
if test "$sha" ; then
upsert_destination_pr
local status
if wait_destination_ci "$sha" ; then
log_info "cascade PR status successful"
status=0
else
log_info "cascade PR status failed"
status=1
fi
close_pr
return $status
fi
}
function run_origin_pr() {
local state=$(pr_state origin)
case "$state" in
open)
log_info "PR is open, update or create the cascade branch and PR"
@ -455,6 +488,11 @@ function main() {
options[origin_pr]=$1
shift
;;
--origin-ref)
shift
options[origin_ref]=$1
shift
;;
--destination-url)
shift
options[destination_url]=$1