git 配置邮件通知
#!/bin/bash
#
# Copyright (c) 2007 Andy Parkins
# Copyright (c) 2008 Stephen Haberman
#
# This hook sends emails listing new revisions to the repository introduced by
# the change being reported. The rule is that (for branch updates) each commit
# will appear on one email and one email only.
#
# Differences from the contrib script (off the top of my head):
#
# * Sends combined diff output which is great for viewing merge commits
# * Changes order of commit listing to be oldest to newest
# * Configurable sendmail path
# * Use git describe --tags for the email subject to pick up commitnumbers
#
# Config
# ------
# hooks.post-receive-email.mailinglist
# This is the list that all pushes will go to; leave it blank to not send
# emails for every ref update.
# hooks.post-receive-email.announcelist
# This is the list that all pushes of annotated tags will go to. Leave it
# blank to default to the mailinglist field. The announce emails lists
# the short log summary of the changes since the last annotated tag.
# hooks.post-receive-email.envelopesender
# If set then the -f option is passed to sendmail to allow the envelope
# sender address to be set
# hooks.post-receive-email.sendmail
# The path to sendmail, e.g. /usr/sbin/sendmail or /bin/msmtp
# USER_EMAIL
# Environment variable that should be set by your repository-specific
# post-receive hook. E.g. export USER_EMAIL=${USER}@example.com
#
# Notes
# -----
# All emails include the headers "X-Git-Refname", "X-Git-Oldrev",
# "X-Git-Newrev", and "X-Git-Reftype" to enable fine tuned filtering and
# give information for debugging.
#
# ---------------------------- Functions
. $(dirname $0)/functions
#
# Top level email generation function. This decides what type of update
# this is and calls the appropriate body-generation routine after outputting
# the common header
#
# Note this function doesn't actually generate any email output, that is
# taken care of by the functions it calls:
# - generate_email_header
# - generate_create_XXXX_email
# - generate_update_XXXX_email
# - generate_delete_XXXX_email
#
generate_email()
{
# --- Arguments
oldrev=$(git rev-parse $1)
newrev=$(git rev-parse $2)
refname="$3"
set_change_type
set_rev_types
set_describe_tags
# The revision type tells us what type the commit is, combined with
# the location of the ref we can decide between
# - working branch
# - tracking branch
# - unannoted tag
# - annotated tag
case "$refname","$rev_type" in
refs/tags/*,commit)
# un-annotated tag
refname_type="tag"
function="ltag"
short_refname=${refname##refs/tags/}
;;
refs/tags/*,tag)
# annotated tag
refname_type="annotated tag"
function="atag"
short_refname=${refname##refs/tags/}
# change recipients
if [ -n "$announcerecipients" ]; then
recipients="$announcerecipients"
fi
;;
refs/heads/*,commit)
# branch
refname_type="branch"
function="branch"
short_refname=${refname##refs/heads/}
;;
refs/remotes/*,commit)
# tracking branch
refname_type="tracking branch"
short_refname=${refname##refs/remotes/}
echo >&2 "*** Push-update of tracking branch, $refname"
echo >&2 "*** - no email generated."
exit 0
;;
*)
# Anything else (is there anything else?)
echo >&2 "*** Unknown type of update to $refname ($rev_type)"
echo >&2 "*** - no email generated"
exit 1
;;
esac
# Check if we've got anyone to send to
if [ -z "$recipients" ]; then
case "$refname_type" in
"annotated tag")
config_name="hooks.post-receive-email.announcelist"
;;
*)
config_name="hooks.post-receive-email.mailinglist"
;;
esac
echo >&2 "*** $config_name is not set so no email will be sent"
echo >&2 "*** for $refname update $oldrev->$newrev"
exit 0
fi
generate_email_header
generate_${change_type}_${function}_email
}
generate_email_header()
{
# --- Email (all stdout will be the email)
# Generate header
cat <<-EOF
From: $USER_EMAIL
To: $recipients
Subject: ${emailprefix} $short_refname $refname_type ${change_type}d. $describe_tags
X-Git-Refname: $refname
X-Git-Reftype: $refname_type
X-Git-Oldrev: $oldrev
X-Git-Newrev: $newrev
The $refname_type, $short_refname has been ${change_type}d
EOF
}
# --------------- Branches
#
# Called for the creation of a branch
#
generate_create_branch_email()
{
# This is a new branch and so oldrev is not valid
git rev-list --pretty=format:" at %h %s" --no-walk "$newrev" | grep -vP "^commit"
set_new_commits
echo ""
echo $LOGBEGIN
echo "$new_commits" | git rev-list --reverse --stdin | while read commit ; do
echo ""
git rev-list --no-walk --pretty "$commit"
git diff-tree --cc "$commit"
echo ""
echo $LOGEND
done
oldest_new=$(echo "$new_commits" | git rev-list --stdin | tail -n 1)
if [ "$oldest_new" != "" ] ; then
echo ""
echo "Summary of changes:"
git diff-tree --stat $oldest_new^..$newrev
fi
}
#
# Called for the change of a pre-existing branch
#
generate_update_branch_email()
{
# List all of the revisions that were removed by this update (hopefully empty)
git rev-list --first-parent --pretty=format:" discards %h %s" $newrev..$oldrev | grep -vP "^commit"
# List all of the revisions that were added by this update
git rev-list --first-parent --pretty=format:" via %h %s" $oldrev..$newrev | grep -vP "^commit"
removed=$(git rev-list $newrev..$oldrev)
if [ "$removed" == "" ] ; then
git rev-list --no-walk --pretty=format:" from %h %s" $oldrev | grep -vP "^commit"
else
# Must be rewind, could be rewind+addition
echo ""
# Find the common ancestor of the old and new revisions and compare it with newrev
baserev=$(git merge-base $oldrev $newrev)
rewind_only=""
if [ "$baserev" = "$newrev" ]; then
echo "This update discarded existing revisions and left the branch pointing at"
echo "a previous point in the repository history."
echo ""
echo " * -- * -- N ($newrev)"
echo " \\"
echo " O -- O -- O ($oldrev)"
echo ""
echo "The removed revisions are not necessarilly gone - if another reference"
echo "still refers to them they will stay in the repository."
rewind_only=1
else
echo "This update added new revisions after undoing existing revisions. That is"
echo "to say, the old revision is not a strict subset of the new revision. This"
echo "situation occurs when you --force push a change and generate a repository"
echo "containing something like this:"
echo ""
echo " * -- * -- B -- O -- O -- O ($oldrev)"
echo " \\"
echo " N -- N -- N ($newrev)"
echo ""
echo "When this happens we assume that you've already had alert emails for all"
echo "of the O revisions, and so we here report only the revisions in the N"
echo "branch from the common base, B."
fi
fi
echo ""
if [ -z "$rewind_only" ]; then
echo "Those revisions listed above that are new to this repository have"
echo "not appeared on any other notification email; so we list those"
echo "revisions in full, below."
set_new_commits
echo ""
echo $LOGBEGIN
echo "$new_commits" | git rev-list --reverse --stdin | while read commit ; do
echo ""
git rev-list --no-walk --pretty "$commit"
git diff-tree --cc "$commit"
echo ""
echo $LOGEND
done
# XXX: Need a way of detecting whether git rev-list actually
# outputted anything, so that we can issue a "no new
# revisions added by this update" message
else
echo "No new revisions were added by this update."
fi
# Show the diffstat which is what really happened (new commits/whatever aside)
echo ""
echo "Summary of changes:"
git diff-tree --stat --find-copies-harder $oldrev..$newrev
}
#
# Called for the deletion of a branch
#
generate_delete_branch_email()
{
echo " was $oldrev"
echo ""
echo $LOGEND
git show -s --pretty=oneline $oldrev
echo $LOGEND
}
# --------------- Annotated tags
#
# Called for the creation of an annotated tag
#
generate_create_atag_email()
{
echo " at $newrev ($newrev_type)"
generate_atag_email
}
#
# Called for the update of an annotated tag (this is probably a rare event
# and may not even be allowed)
#
generate_update_atag_email()
{
echo " to $newrev ($newrev_type)"
echo " from $oldrev (which is now obsolete)"
generate_atag_email
}
#
# Called when an annotated tag is created or changed
#
generate_atag_email()
{
# Use git for-each-ref to pull out the individual fields from the
# tag
eval $(git for-each-ref --shell --format='
tagobject=%(*objectname)
tagtype=%(*objecttype)
tagger=%(taggername)
tagged=%(taggerdate)' $refname
)
echo " tagging $tagobject ($tagtype)"
case "$tagtype" in
commit)
# If the tagged object is a commit, then we assume this is a
# release, and so we calculate which tag this tag is replacing
prevtag=$(git describe --abbrev=0 $newrev^ 2>/dev/null)
if [ -n "$prevtag" ]; then
echo " replaces $prevtag"
fi
;;
*)
echo " length $(git cat-file -s $tagobject) bytes"
;;
esac
echo " tagged by $tagger"
echo " on $tagged"
echo ""
echo $LOGBEGIN
# Show the content of the tag message; this might contain a change
# log or release notes so is worth displaying.
git cat-file tag $newrev | sed -e '1,/^$/d'
echo ""
case "$tagtype" in
commit)
# Only commit tags make sense to have rev-list operations
# performed on them
if [ -n "$prevtag" ]; then
# Show changes since the previous release
git rev-list --pretty=short "$prevtag..$newrev" | git shortlog
else
# No previous tag, show all the changes since time
# began
git rev-list --pretty=short $newrev | git shortlog
fi
;;
*)
# XXX: Is there anything useful we can do for non-commit
# objects?
;;
esac
echo $LOGEND
}
#
# Called for the deletion of an annotated tag
#
generate_delete_atag_email()
{
echo " was $oldrev ($oldrev_type)"
echo ""
echo $LOGEND
git show -s --pretty=oneline $oldrev
echo $LOGEND
}
# --------------- General references
#
# Called when any other type of reference is created (most likely a
# non-annotated tag)
#
generate_create_ltag_email()
{
echo " at $newrev ($newrev_type)"
generate_ltag_email
}
#
# Called when any other type of reference is updated (most likely a
# non-annotated tag)
#
generate_update_ltag_email()
{
echo " to $newrev ($newrev_type)"
echo " from $oldrev ($oldrev_type)"
generate_ltag_email
}
#
# Called for creation or update of any other type of reference
#
generate_ltag_email()
{
# Unannotated tags are more about marking a point than releasing a
# version; therefore we don't do the shortlog summary that we do for
# annotated tags above - we simply show that the point has been
# marked, and print the log message for the marked point for
# reference purposes
#
# Note this section also catches any other reference type (although
# there aren't any) and deals with them in the same way.
echo ""
if [ "$newrev_type" = "commit" ]; then
echo $LOGBEGIN
git show --no-color --root -s --pretty=medium $newrev
echo $LOGEND
else
# What can we do here? The tag marks an object that is not
# a commit, so there is no log for us to display. It's
# probably not wise to output git cat-file as it could be a
# binary blob. We'll just say how big it is
echo "$newrev is a $newrev_type, and is $(git cat-file -s $newrev) bytes long."
fi
}
#
# Called for the deletion of any other type of reference
#
generate_delete_ltag_email()
{
echo " was $oldrev ($oldrev_type)"
echo ""
echo $LOGEND
git show -s --pretty=oneline $oldrev
echo $LOGEND
}
send_mail()
{
if [ -n "$envelopesender" ] ; then
$sendmail -t -f "$envelopesender"
else
$sendmail -t
fi
}
# ---------------------------- main()
# --- Constants
LOGBEGIN="- Log -----------------------------------------------------------------"
LOGEND="-----------------------------------------------------------------------"
# --- Config
# Set GIT_DIR either from the working directory or the environment variable.
GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
if [ -z "$GIT_DIR" ]; then
echo >&2 "fatal: post-receive: GIT_DIR not set"
exit 1
fi
projectdesc=$(sed -ne '1p' "$GIT_DIR/description")
# Shorten the description if it's the default
if expr "$projectdesc" : "Unnamed repository.*$" >/dev/null ; then
projectdesc="UNNAMED"
fi
recipients=$(git config hooks.post-receive-email.mailinglist)
announcerecipients=$(git config hooks.post-receive-email.announcelist)
envelopesender=$(git config hooks.post-receive-email.envelopesender)
emailprefix="[$projectdesc]"
debug=$(git config hooks.post-receive-email.debug)
sendmail=$(git config hooks.post-receive-email.sendmail)
# --- Main loop
# Allow dual mode: run from the command line just like the update hook, or
# if no arguments are given then run as a hook script
if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
# Output to the terminal in command line mode - if someone wanted to
# resend an email; they could redirect the output to sendmail
# themselves
PAGER= generate_email $2 $3 $1
else
while read oldrev newrev refname
do
if [ "$debug" == "true" ] ; then
generate_email $oldrev $newrev $refname > "${refname//\//.}.out"
else
generate_email $oldrev $newrev $refname | send_mail
fi
done
fi
#!/bin/bash
# Sets: new_commits
# Assumes: $oldrev $newrev $refname
#
# This is for use in post receive hooks, as it assumes the refname has moved and
# is now newrev, we need to discard it. This is down with bash string replace,
# as it will replace only the first match, compared to the canonical "grep -v"
# approach which will throw out multiple matches if the same commit is referred
# to by multiple branches.
#
# Excellent, excellent docs from Andy Parkin's email script
#
##################################################
#
# Consider this:
# 1 --- 2 --- O --- X --- 3 --- 4 --- N
#
# O is $oldrev for $refname
# N is $newrev for $refname
# X is a revision pointed to by some other ref, for which we may
# assume that an email has already been generated.
# In this case we want to issue an email containing only revisions
# 3, 4, and N. Given (almost) by
#
# git rev-list N ^O --not --all
#
# The reason for the "almost", is that the "--not --all" will take
# precedence over the "N", and effectively will translate to
#
# git rev-list N ^O ^X ^N
#
# So, we need to build up the list more carefully. git rev-parse
# will generate a list of revs that may be fed into git rev-list.
# We can get it to make the "--not --all" part and then filter out
# the "^N" with:
#
# git rev-parse --not --all | grep -v N
#
# Then, using the --stdin switch to git rev-list we have effectively
# manufactured
#
# git rev-list N ^O ^X
#
# This leaves a problem when someone else updates the repository
# while this script is running. Their new value of the ref we're
# working on would be included in the "--not --all" output; and as
# our $newrev would be an ancestor of that commit, it would exclude
# all of our commits. What we really want is to exclude the current
# value of $refname from the --not list, rather than N itself. So:
#
# git rev-parse --not --all | grep -v $(git rev-parse $refname)
#
# Get's us to something pretty safe (apart from the small time
# between refname being read, and git rev-parse running - for that,
# I give up)
#
#
# Next problem, consider this:
# * --- B --- * --- O ($oldrev)
# \
# * --- X --- * --- N ($newrev)
#
# That is to say, there is no guarantee that oldrev is a strict
# subset of newrev (it would have required a --force, but that's
# allowed). So, we can't simply say rev-list $oldrev..$newrev.
# Instead we find the common base of the two revs and list from
# there.
#
# As above, we need to take into account the presence of X; if
# another branch is already in the repository and points at some of
# the revisions that we are about to output - we don't want them.
# The solution is as before: git rev-parse output filtered.
#
# Finally, tags: 1 --- 2 --- O --- T --- 3 --- 4 --- N
#
# Tags pushed into the repository generate nice shortlog emails that
# summarise the commits between them and the previous tag. However,
# those emails don't include the full commit messages that we output
# for a branch update. Therefore we still want to output revisions
# that have been output on a tag email.
#
# Luckily, git rev-parse includes just the tool. Instead of using
# "--all" we use "--branches"; this has the added benefit that
# "remotes/" will be ignored as well.
#
##################################################
set_new_commits() {
nl=$'\n'
# Get all the current branches, not'd as we want only new ones
new_commits=$(git rev-parse --not --branches)
# Strip off the not current branch
new_hash=$(git rev-parse $refname)
new_commits=${new_commits/^$new_hash/}
# Put back newrev without the not
new_commits=${new_commits}${nl}${newrev}
# Put in ^oldrev if it's not a new branch
if [ "$oldrev" != "0000000000000000000000000000000000000000" ] ; then
new_commits=${new_commits}${nl}^${oldrev}
fi
new_commits=${new_commits/$nl$nl/$nl}
new_commits=${new_commits/#$nl/}
}
# Sets: $change_type
# Assumes: $oldrev $newrev
#
# --- Interpret
# 0000->1234 (create)
# 1234->2345 (update)
# 2345->0000 (delete)
set_change_type() {
if [ "$oldrev" == "0000000000000000000000000000000000000000" ] ; then
change_type="create"
else
if [ "$newrev" == "0000000000000000000000000000000000000000" ] ; then
change_type="delete"
else
change_type="update"
fi
fi
}
# Sets: $newrev_type $oldrev_type $rev $rev_type
# Assumes: $newrev $oldrev
# --- Get the revision types
set_rev_types() {
newrev_type=$(git cat-file -t "$newrev" 2> /dev/null)
oldrev_type=$(git cat-file -t "$oldrev" 2> /dev/null)
if [ "$newrev" == "0000000000000000000000000000000000000000" ] ; then
rev_type="$oldrev_type"
rev="$oldrev"
else
rev_type="$newrev_type"
rev="$newrev"
fi
}
# Sets: $describe
# Assumes: $rev
#
# The email subject will contain the best description of the ref that we can build from the parameters
set_describe() {
rev_to_describe="$rev"
if [ "$1" != "" ] ; then
rev_to_describe="$1"
fi
describe=$(git describe $rev_to_describe 2>/dev/null)
if [ -z "$describe" ]; then
describe=$rev_to_describe
fi
}
# Sets: $describe_tags
# Assumes: $rev
#
# The email subject will contain the best description of the ref that we can build from the parameters
set_describe_tags() {
rev_to_describe="$rev"
if [ "$1" != "" ] ; then
rev_to_describe="$1"
fi
describe_tags=$(git describe --tags $rev_to_describe 2>/dev/null)
if [ -z "$describe_tags" ]; then
describe_tags=$rev_to_describe
fi
}
# Takes a lockfile path and command to execute once the lock is acquired.
#
# Retries every second for 5 minutes.
#
# with_lock "foo.lock" "echo a" # Works
# with_lock "foo.lock" "echo b1 ; echo b2" # Work
# several() {
# echo several1 ; echo several2
# }
# with_lock "foo.lock" several # Works
#
with_lock() {
lockfile="$1"
block="$2"
with_lock_has_lock=1
trap with_lock_unlock_if_held INT TERM EXIT
# used to use lockfile to try multiple times but it's not always available
mkdir "$lockfile"
with_lock_has_lock=$?
if [ $with_lock_has_lock -ne 0 ] ; then
exit $?
fi
eval "$block"
rmdir "$lockfile"
with_lock_has_lock=1
}
with_lock_unlock_if_held() {
if [[ "$with_lock_has_lock" -eq 0 ]] ; then
rm -f "$lockfile"
fi
}
display_error_message() {
echo "----------------------------------------------------" >&2
echo "" >&2
echo "" >&2
for ((i=1;i<=$#;i+=1)); do
eval message="$"$i
echo "$message" >&2
done
echo "" >&2
echo "" >&2
echo "----------------------------------------------------" >&2
}