scripts/ci/openapi/client_codegen_diff.sh

#!/usr/bin/env bash
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set -eu

# HEAD^1 says the "first" parent. For PR merge commits, or main commits, this is the "right" commit.
#
# In this example, 9c532b6 is the PR commit (HEAD^2), 4840892 is the head GitHub checks-out for us, and db121f7 is the
# "merge target" (HEAD^1) -- i.e. mainline
#
# *   4840892 (HEAD, pull/11906/merge) Merge 9c532b6a2c56cd5d4c2a80ecbed60f9dfd1f5fe6 into db121f726b3c7a37aca1ea05eb4714f884456005 [Ephraim Anierobi]
# |\
# | * 9c532b6 (grafted) make taskinstances pid and duration nullable [EphraimBuddy]
# * db121f7 (grafted) Add truncate table (before copy) option to S3ToRedshiftOperator (#9246) [JavierLopezT]

previous_mainline_commit="$(git rev-parse --short HEAD^1)"

echo "Diffing openapi spec against ${previous_mainline_commit}..."

SPEC_FILE="airflow/api_connexion/openapi/v1.yaml"
readonly SPEC_FILE

GO_CLIENT_PATH="clients/go/airflow"
readonly GO_CLIENT_PATH

GO_TARGET_CLIENT_PATH="clients/go_target_branch/airflow"
readonly GO_TARGET_CLIENT_PATH

# generate client for current patch
mkdir -p "${GO_CLIENT_PATH}"

./clients/gen/go.sh "${SPEC_FILE}" "${GO_CLIENT_PATH}"
# generate client for target patch
mkdir -p "${GO_TARGET_CLIENT_PATH}"

git checkout "${previous_mainline_commit}" -- "$SPEC_FILE"
./clients/gen/go.sh "${SPEC_FILE}" "${GO_TARGET_CLIENT_PATH}"

diff -u "${GO_TARGET_CLIENT_PATH}" "${GO_CLIENT_PATH}" || true