367 lines
9.1 KiB
Bash
Executable File
367 lines
9.1 KiB
Bash
Executable File
#!/bin/bash
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set -x
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fifo=""
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customer_id=""
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customer_repository=""
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source ./log_helpers.sh
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source ./git_helpers.sh
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source ./opkg_helpers.sh
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source ./update_helpers.sh
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init_fifo () {
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trap "rm -f $fifo" EXIT
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if [ $? -eq 0 ]; then
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# set trap
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if [[ ! -p "$fifo" ]]; then
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mkfifo "$fifo"
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if [ $? -eq 0 ]; then
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# fifo created
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echo "created fifo=$fifo"
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return 0
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fi
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fi
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fi
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return 1
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}
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read_config() {
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local func="${FUNCNAME[0]}"
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# check fifo settings
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fifo_dir=$(cat "$1" | jq -r .fifo_dir)
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if [ -z "$fifo_dir" ]; then
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log_fatal "$func: fifo_dir not set in $1"
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fi
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fifo=$(cat "$1" | jq -r .fifo)
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if [ -z "$fifo" ]; then
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log_fatal "$func: fifo not set in $1"
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fi
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fifo="${fifo_dir}/$fifo"
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log_debug "$func: fifo is $fifo"
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# check customer_id
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customer_id="$(cat "$1" | jq -r .customer_id)"
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if [ -z "$customer_id" ]; then
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log_fatal "$func: customer_id not set in $1"
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fi
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customer_id="customer_$customer_id"
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log_info "$func: customer-id is $customer_id"
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# check customer_repository
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repository_path="$(cat "$1" | jq -r .repository_path)"
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if [ -z "$repository_path" ]; then
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log_fatal "$func: repository path not set in $1"
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fi
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repository_path="${repository_path}/${customer_id}.git"
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log_info "$func: repository path is $repository_path"
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return 0
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}
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wait_for_trigger() {
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if [[ "$1" -eq -1 ]]; then
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# wait for external impulse
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if read line <$fifo; then
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if [ "$line" = "quit" ] || [ "$line" = "update" ]; then
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echo "$line"
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fi
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fi
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else
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sleep $1
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echo "sleep"
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fi
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}
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# APISM has al least two TCP-ports open: 7778 and 7779. To check for a running
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# APISM it is therefore enough to check for the port 7778. netcat will return 0
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# if the port 7778 is open.
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check_for_apism() {
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return 0
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nc localhost 7778
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if [ $? -eq 0 ]; then
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return 0
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fi
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return 1
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}
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######################### send_to_ismas.txt ###################################
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# #M=GH_APP
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# #C=REQ_ISMASParameter
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# #J={}
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# {
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# "DEV_ID": {
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# "Device_Type": "2020",
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# "Custom_ID": 999,
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# "Device_ID": 1
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# },
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# "REQ_ISMASParameter_#1": {}
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# }
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#
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# APISM should respond with (something like this):
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#
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# {
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# "REQ_ISMASPARAMETER#69553_Response": {
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# "Aknoledge": "OK"
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# },
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# "Dev_ID": {
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# "Device_Type": "ISMAS",
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# "Custom_ID": 999,
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# "Device_ID": 2
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# },
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# "Fileupload": [
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# { "IPK": "BladiBlupp.Zip",
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# "MD5": "01234567890123456789012345678901"}
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# ],
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# "Parameter": {
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# "Location": "An der Bahn 11",
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# "Group": "G1",
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# "Zone": "Z1",
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# "Name": "Bruno",
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# "SecNumber": "0",
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# "LastAcc": "1",
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# "GPSLat": "49,6019",
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# "GPSLon": "12,1258"
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# }
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# }
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#
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# where the interesting part is contained in "FileUpload".
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#
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check_for_updates() {
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# ismas_response=$(cat send_to_ismas.txt; sleep 1) | nc localhost 7778)
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if ! pull_customer_repository customer_281; then
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return 1
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fi
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return 0
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}
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backup_previous_version() {
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return 0
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}
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fetch_updates() {
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return 0
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}
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check_updates() {
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return 0
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}
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revert_updates() {
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return 0
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}
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lock_before_installing_updates() {
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return 0
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}
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do_update_dry_run() {
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return 0
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}
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do_update() {
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return 0
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}
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fallback_to_previous_version() {
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return 0;
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}
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unlock_after_installing_updates() {
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return 0;
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}
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cleanup_previous_version() {
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return 0
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}
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send_reboot_message_to_system_controller() {
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return 0
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}
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###############################################################################
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#
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# UPDATE CONTROLLER
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#
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###############################################################################
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UpdateController() {
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local trigger_reboot=false
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local check_apism_count=0
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local try_update_count=0
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local try_lock_count=0
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local try_unlock_count=0
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local trigger_timeout=-1
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# read config parameters
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# read_config
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# By default (trigger_timeout==-1), UpdateController can only be triggered
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# from some external source to perform an update.
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while :
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do
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trigger=$(wait_for_trigger $trigger_timeout)
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echo "trigger=$trigger"
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if [ "$trigger" = "quit" ]; then
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$trigger_reboot = true
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elif [ "$trigger" != "update" ]; then
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continue
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fi
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if $trigger_reboot; then
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echo "CRITICAL send message to reboot the PSA"
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send_reboot_message_to_system_controller
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continue
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fi
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# Is APISM running, listening on the correct ports etc. ?
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while :
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do
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if ! check_for_apism; then
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var=$((var+1))
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check_apism_count=$((check_apism_count+1))
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if [[ "$check_apism_count" -eq 5 ]]; then
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trigger_reboot=true
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check_apism_count=0
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echo "ERROR APISM not working"
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continue 2
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fi
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echo "[$check_apism_count]: $(date +'%Y-%m-%d %T') check APISM"
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sleep 60s
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else
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# APISM up and working
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check_apism_count=0
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break
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fi
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done
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echo "$(date +'%Y-%m-%d %T') checking for updates..."
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# exit 1
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# Are there new updates available ?
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if ! check_for_updates; then
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echo "DEBUG no updates available"
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continue
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fi
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echo "$(date +'%Y-%m-%d %T') fetching updates..."
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exit 1
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# Fetch new updates (using git)
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while :
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do
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if ! fetch_updates; then
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try_updates_count=$((try_updates_count+1))
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if [[ "$try_updates_count" -eq 5 ]]; then
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trigger_reboot=true
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echo "ERROR fetching updates"
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continue 2
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fi
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sleep 60s
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else
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# Fetched updates successfully
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try_updates_count=0
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break
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fi
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done
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# Check the updates for:
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# * correct MD5
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# * compatibility with PSA
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# ...
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if ! check_updates; then
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echo "ERROR check_updates"
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revert_updates
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trigger_reboot=true
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continue
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fi
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# perform a dry-run and check if everything might work as expected.
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if ! do_update_dry_run; then
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echo "ERROR do_update_dry_run"
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revert_updates
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trigger_reboot=true
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continue
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fi
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# Backup before any updates in case some previous test was wrong
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if ! backup_previous_version; then
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echo "ERROR backup_previous_version"
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revert_updates
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trigger_reboot=true
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continue
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fi
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# Lock the PSA so all other tasks on the PSA are in sync with the update
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while :
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do
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if ! lock_before_installing_updates; then
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try_lock_count=$((try_lock_count+1))
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if [[ "$try_lock_count" -eq 5 ]]; then
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revert_updates
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fallback_to_previous_version
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trigger_reboot=true
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echo "ERROR locking PSA"
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continue 2
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fi
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sleep 60s
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else
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# Locked PSA successfully
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try_lock_count=0
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break
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fi
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done
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# Actually do the update
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if ! do_update; then
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echo "ERROR do_update"
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revert_updates
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fallback_to_previous_version
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trigger_reboot=true
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continue
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fi
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while :
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do
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# If all went well, the PSA can return to normal operation
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if ! unlock_after_installing_updates; then
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try_unlock_count=$((try_unlock_count+1))
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if [[ "$try_unlock_count" -eq 5 ]]; then
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revert_updates
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fallback_to_previous_version
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trigger_reboot=true
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echo "ERROR unlocking PSA"
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continue 2
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fi
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sleep 60s
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else
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# Unlocked PSA successfully
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try_unlock_count=0
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break
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fi
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done
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# Cleanup.
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if ! cleanup_previous_version; then
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echo "ERROR cleanup_previous_version"
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fi
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done
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}
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###############################################################################
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if [ $# -ne 1 ] ; then
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echo "Usage: $0 filename"
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exit 1
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else
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if read_config "$1" ; then
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init_fifo
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UpdateController
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fi
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fi
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