From 8c4f64cf9650b4e76156fc00f2bcaadca705b215 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=A1clav=20Val=C3=AD=C4=8Dek=20=28YCNet=29?=
 <hppro@swamp.ga>
Date: Thu, 22 Feb 2018 22:09:11 +0100
Subject: [PATCH] Testing git runner

---
 checker/detector-lib-cfg | 29 +++++++++++++++++++++
 checker/detector-lib-git | 37 +++++++++++++++++++++++++++
 checker/notify-commit    | 11 ++++++++
 checker/notify-tag       | 11 ++++++++
 checker/run-checker      | 54 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 142 insertions(+)
 create mode 100644 checker/detector-lib-cfg
 create mode 100644 checker/detector-lib-git
 create mode 100755 checker/notify-commit
 create mode 100755 checker/notify-tag

diff --git a/checker/detector-lib-cfg b/checker/detector-lib-cfg
new file mode 100644
index 0000000..d29b6e6
--- /dev/null
+++ b/checker/detector-lib-cfg
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+
+# check if varriable is set
+[ -n "$CONFIG_DIR" ] || die "ConfigDir is not set - exit!"
+
+
+function detectorRunCapable(){
+	if [ -f $CONFIG_DIR/detector.cfg ]
+	then
+		return 0
+	else
+		return 1	
+	fi
+}
+
+function detectorLoadConfig(){
+	# load config
+	source $CONFIG_DIR/detector.cfg
+
+	# create cache dirs
+	DET_DIR=$CCLONE_CACHE/detector
+	DET_TAGS=$DET_DIR/tags
+	DET_BRANCHES=$DET_DIR/branches
+	[ -d $DET_TAGS ] || mkdir -p $DET_TAGS
+	[ -d $DET_BRANCHES ] || mkdir -p $DET_BRANCHES
+}
+
+
diff --git a/checker/detector-lib-git b/checker/detector-lib-git
new file mode 100644
index 0000000..d5416a5
--- /dev/null
+++ b/checker/detector-lib-git
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+
+function detectorSum(){
+	local dir=$1
+	[ -f $dir/FETCH_HEAD ] || touch $dir/FETCH_HEAD
+	# use md5sum - it is in busybox
+	cat $dir/FETCH_HEAD | md5sum | cut -f1 -d' '
+}
+
+function detectorSumPersist(){
+	detectorSum $1 > $CCLONE_CACHE/detectorSum
+}
+
+function detectorCheckFetchHead(){
+	# check if repo fetch_head changed, if so, return 1 
+	local dir=$1
+
+	[ -f $CCLONE_CACHE/detectorSum ]  || touch $CCLONE_CACHE/detectorSum
+
+	newSum=$(detectorSum $dir)
+	oldSum=$(cat $CCLONE_CACHE/detectorSum)
+
+	if [ "x$oldSum" = "x$newSum" ] 
+	then
+		return 0
+	else
+		return 1
+	fi
+}
+
+
+function gitListTags(){
+	local dir=$1
+	git --no-paginate --git-dir="$dir" tag -l
+
+}
diff --git a/checker/notify-commit b/checker/notify-commit
new file mode 100755
index 0000000..de17493
--- /dev/null
+++ b/checker/notify-commit
@@ -0,0 +1,11 @@
+#!/bin/bash
+# notify on commit push
+#
+# Parameters (via env)
+# 
+# 	COMMIT - hash of commit
+#	COMMIT_AUTHOR - author of commit
+#	COMMIT_BRANCH - name of branch 
+#	PROJECT_NAME - project name specified in cloner.cfg
+echo "Commit: ($COMMIT: (AUTHOR=$COMMIT_AUTHOR; BRANCH=$COMMIT_BRANCH), Project: $PROJECT_NAME)"
+
diff --git a/checker/notify-tag b/checker/notify-tag
new file mode 100755
index 0000000..11aeb92
--- /dev/null
+++ b/checker/notify-tag
@@ -0,0 +1,11 @@
+#!/bin/bash
+# notify on tag push (new tag or change)
+#
+# Parameters (via env)
+#
+# 	TAG_HASH - hash of tagged commit
+#	TAG_NAME - tag label
+#	TAG_AUTHOR - who authored the tag - if available
+# 	PROJECT_NAME - name of project specified in cloner.cfg
+echo "TAG: (Name=$TAG_NAME; AUTHOR=$TAG_AUTHOR; SHA: $TAG_HASH), PROJECT: $PROJECT_NAME"
+
diff --git a/checker/run-checker b/checker/run-checker
index 80f44ac..733df57 100755
--- a/checker/run-checker
+++ b/checker/run-checker
@@ -7,6 +7,7 @@ mydir=$(dirname $(realpath $0))
 source $mydir/cloner-lib-general
 source $mydir/cloner-lib-auth
 source $mydir/cloner-lib-cfg
+source $mydir/detector-lib-cfg
 
 
 # interval - in minutes
@@ -46,4 +47,57 @@ fi
 
 date +"%s" > $stampfile
 
+# if detector is not enabled, quit quietly
+if ! detectorRunCapable 
+then
+	exit 0
+fi
+
+source $mydir/detector-lib-git
+
+detectorLoadConfig
+
+repodir=$(gen-mirror-path $repo)
+
+if detectorCheckFetchHead $repodir
+then
+	# nothing changed, just die
+	exit 0
+fi
+
+# now, the fun begins!
+
+# first, solve commits
+
+# solve tags - remove nonexistent refs
+find $DET_TAGS -type f | sort |  while read tagname
+do
+	tag=$(basename $tagname)
+	if ! git --git-dir $repodir tag -l | grep -q "^$tag$"
+	then
+		echo "Removing tag: $tag (was [$(cat $tagname)])"
+		rm $tagname
+	fi
+done
+
+# tags that changed or was pushed as new
+git --git-dir $repodir tag -l | while read tagname
+do
+	[ -f $DET_TAGS/$tagname ] || touch $DET_TAGS/$tagname
+	oldsha=$(cat $DET_TAGS/$tagname)
+	newsha=$(git --git-dir $repodir show-ref $tagname | cut -d' ' -f1)
+	if ! [ "$oldsha" = "$newsha" ] 
+	then
+		# TAG_HASH = $newsha
+		# TAG_AUTHOR
+		git --git-dir $repodir log $newsha -1 --pretty=format:"%an"
+
+	fi
+
+done
+
+
+
+# save hash to keep things clear
+#detectorSumPersist $repodir