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kamal/lib/mrsk/cli/templates/sample_hooks/pre-build.sample
Donal McBreen 66f9ce0e90 Add a pre-connect hook
This can be used for hooks that should run before connecting to remote
hosts. An example use case is pre-warming DNS.
2023-05-24 14:39:30 +01:00

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#!/bin/sh
# A sample pre-build hook
#
# Checks:
# 1. We have a clean checkout
# 2. A remote is configured
# 3. The branch has been pushed to the remote
# 4. The version we are deploying matches the remote
#
# These environment variables are available:
# MRSK_RECORDED_AT
# MRSK_PERFORMER
# MRSK_VERSION
# MRSK_HOSTS
# MRSK_ROLE (if set)
# MRSK_DESTINATION (if set)
if [ -n "$(git status --porcelain)" ]; then
echo "Git checkout is not clean, aborting..." >&2
git status --porcelain >&2
exit 1
fi
first_remote=$(git remote)
if [ -z "$first_remote" ]; then
echo "No git remote set, aborting..." >&2
exit 1
fi
current_branch=$(git branch --show-current)
if [ -z "$current_branch" ]; then
echo "No git remote set, aborting..." >&2
exit 1
fi
remote_head=$(git ls-remote $first_remote --tags $current_branch | cut -f1)
if [ -z "$remote_head" ]; then
echo "Branch not pushed to remote, aborting..." >&2
exit 1
fi
if [ "$MRSK_VERSION" != "$remote_head" ]; then
echo "Version ($MRSK_VERSION) does not match remote HEAD ($remote_head), aborting..." >&2
exit 1
fi
exit 0