Fix lifecycle script (#5918)

* netdata/packaging/ci: stronger validations during install, add some comments, change validation of CWD

* netdata/packaging/ci: Add a lifecycle test to validate update from stable to latest works smooth

-> Add updater BATS script that does the trick for installing stable then migrating to latest using current code and not nightly
-> Integrate with travis
-> Rename /code to /netdata in travis, scripts will eventually expect the TLD of repo to be actually named netdata, so test will start failing later
-> Introduce a flag on the updater, so that it doesn't download the tarball, but it rather works with a local pre-defined directory. If a user wants
   to override the update process, so that it runs with a different repository he just needs to export NETDATA_LOCAL_TARBAL_OVERRIDE with the desired repo directory

* netdata/packaging/ci: Add required packages for it to run

1 files changed, 33 insertions, 15 deletions

diff --git a/packaging/installer/netdata-updater.sh b/packaging/installer/netdata-updater.sh
index 56c8379530..21a769ba57 100644..100755
--- a/packaging/installer/netdata-updater.sh
+++ b/packaging/installer/netdata-updater.sh
@@ -67,6 +67,12 @@ download() {
 }
 
 set_tarball_urls() {
+
+	if [ ! -z "${NETDATA_LOCAL_TARBAL_OVERRIDE}" ]; then
+		info "Not fetching remote tarballs, local override was given"
+		return
+	fi
+
 	if [ "$1" == "stable" ]; then
 		local latest
 		# Simple version
@@ -83,22 +89,34 @@ set_tarball_urls() {
 update() {
 	[ -z "${logfile}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
 
-	dir=$(create_tmp_directory)
-	cd "$dir"
+	RUN_INSTALLER=0
+	tmpdir=$(create_tmp_directory)
+	cd "$tmpdir"
 
-	download "${NETDATA_TARBALL_CHECKSUM_URL}" "${dir}/sha256sum.txt" >&3 2>&3
-	if grep "${NETDATA_TARBALL_CHECKSUM}" sha256sum.txt >&3 2>&3; then
-		info "Newest version is already installed"
-	else
-		download "${NETDATA_TARBALL_URL}" "${dir}/netdata-latest.tar.gz"
-		if ! grep netdata-latest.tar.gz sha256sum.txt | safe_sha256sum -c - >&3 2>&3; then
-			fatal "Tarball checksum validation failed. Stopping netdata upgrade and leaving tarball in ${dir}"
+	if [ -z "${NETDATA_LOCAL_TARBAL_OVERRIDE}" ]; then
+		download "${NETDATA_TARBALL_CHECKSUM_URL}" "${tmpdir}/sha256sum.txt" >&3 2>&3
+		if grep "${NETDATA_TARBALL_CHECKSUM}" sha256sum.txt >&3 2>&3; then
+			info "Newest version is already installed"
+		else
+			download "${NETDATA_TARBALL_URL}" "${tmpdir}/netdata-latest.tar.gz"
+			if ! grep netdata-latest.tar.gz sha256sum.txt | safe_sha256sum -c - >&3 2>&3; then
+				fatal "Tarball checksum validation failed. Stopping netdata upgrade and leaving tarball in ${tmpdir}"
+			fi
+			NEW_CHECKSUM="$(safe_sha256sum netdata-latest.tar.gz 2>/dev/null| cut -d' ' -f1)"
+			tar -xf netdata-latest.tar.gz >&3 2>&3
+			rm netdata-latest.tar.gz >&3 2>&3
+			cd netdata-*
+			RUN_INSTALLER=1
 		fi
-		NEW_CHECKSUM="$(safe_sha256sum netdata-latest.tar.gz 2>/dev/null| cut -d' ' -f1)"
-		tar -xf netdata-latest.tar.gz >&3 2>&3
-		rm netdata-latest.tar.gz >&3 2>&3
-		cd netdata-*
+	else
+		info "!!Local tarball override detected!! - Entering directory ${NETDATA_LOCAL_TARBAL_OVERRIDE} for installation, not downloading anything"
+		RUN_INSTALLER=1
+		cd ${NETDATA_LOCAL_TARBAL_OVERRIDE}
+	fi
+
 
+	# We got the sources, run the update now
+	if [ ${RUN_INSTALLER} -eq 1 ]; then
 		# signal netdata to start saving its database
 		# this is handy if your database is big
 		pids=$(pidof netdata)
@@ -119,9 +137,9 @@ NETDATA_TARBALL_CHECKSUM="$NEW_CHECKSUM"
 EOF
 	fi
 
-	rm -rf "${dir}" >&3 2>&3
+	rm -rf "${tmpdir}" >&3 2>&3
 	[ -n "${logfile}" ] && rm "${logfile}" && logfile=
-	return 0
+	return
 }
 
 # Usually stored in /etc/netdata/.environment