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Somewhat cleaner hack to check the status of those damn services that aren't the real services...

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This commit is contained in:
Alexandre Aubin 2020-04-15 03:48:14 +02:00
parent a85c15dd0b
commit 8e46b536dc
2 changed files with 32 additions and 27 deletions
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4
data/templates/yunohost/services.yml
View file

@ -13,7 +13,7 @@ metronome:
category: xmpp
mysql:
log: [/var/log/mysql.log,/var/log/mysql.err,/var/log/mysql/error.log]
alternates: ['mariadb']
actual_systemd_service: mariadb
category: database
nginx:
log: /var/log/nginx
@ -27,7 +27,7 @@ php7.0-fpm:
category: web
postfix:
log: [/var/log/mail.log,/var/log/mail.err]
test_status: systemctl show postfix@- | grep -q "^SubState=running"
actual_systemd_service: postfix@-
needs_exposed_ports: [25, 587]
category: email
redis-server:

55
src/yunohost/service.py
View file

@ -80,7 +80,7 @@ def service_add(name, description=None, log=None, log_type="file", test_status=N
services[name]['description'] = description
else:
# Try to get the description from systemd service
out = subprocess.check_output("systemctl show %s | grep '^Description='" % name, shell=True)
out = subprocess.check_output("systemctl show %s | grep '^Description='" % name, shell=True).strip()
out = out.replace("Description=", "")
# If the service does not yet exists or if the description is empty,
# systemd will anyway return foo.service as default value, so we wanna
@ -295,16 +295,11 @@ def service_status(names=[]):
if services[name].get("status", "") is None:
continue
status = _get_service_information_from_systemd(name)
# try to get status using alternative version if they exists
# this is for mariadb/mysql but is generic in case of
alternates = services[name].get("alternates", [])
while status is None and alternates:
status = _get_service_information_from_systemd(alternates.pop())
systemd_service = services[name].get("actual_systemd_service", name)
status = _get_service_information_from_systemd(systemd_service)
if status is None:
logger.error("Failed to get status information via dbus for service %s, systemctl didn't recognize this service ('NoSuchUnit')." % name)
logger.error("Failed to get status information via dbus for service %s, systemctl didn't recognize this service ('NoSuchUnit')." % systemd_service)
result[name] = {
'status': "unknown",
'start_on_boot': "unknown",
@ -338,6 +333,8 @@ def service_status(names=[]):
# gotta do this ... cf code of /lib/systemd/systemd-sysv-install
if result[name]["start_on_boot"] == "generated":
result[name]["start_on_boot"] = "enabled" if glob("/etc/rc[S5].d/S??"+name) else "disabled"
elif os.path.exists("/etc/systemd/system/multi-user.target.wants/%s.service" % name):
result[name]["start_on_boot"] = "enabled"
if "StateChangeTimestamp" in status:
result[name]['last_state_change'] = datetime.utcfromtimestamp(status["StateChangeTimestamp"] / 1000000)
@ -408,6 +405,7 @@ def service_log(name, number=50):
"""
services = _get_services()
number = int(number)
if name not in services.keys():
raise YunohostError('service_unknown', service=name)
@ -423,11 +421,7 @@ def service_log(name, number=50):
result = {}
# First we always add the logs from journalctl / systemd
result["journalctl"] = _get_journalctl_logs(name, int(number)).splitlines()
# Mysql and journalctl are fucking annoying, we gotta explictly fetch mariadb ...
if name == "mysql":
result["journalctl"] = _get_journalctl_logs("mariadb", int(number)).splitlines()
result["journalctl"] = _get_journalctl_logs(name, number).splitlines()
for index, log_path in enumerate(log_list):
log_type = log_type_list[index]
@ -435,7 +429,7 @@ def service_log(name, number=50):
if log_type == "file":
# log is a file, read it
if not os.path.isdir(log_path):
result[log_path] = _tail(log_path, int(number)) if os.path.exists(log_path) else []
result[log_path] = _tail(log_path, number) if os.path.exists(log_path) else []
continue
for log_file in os.listdir(log_path):
@ -447,10 +441,11 @@ def service_log(name, number=50):
if not log_file.endswith(".log"):
continue
result[log_file_path] = _tail(log_file_path, int(number)) if os.path.exists(log_file_path) else []
result[log_file_path] = _tail(log_file_path, number) if os.path.exists(log_file_path) else []
else:
# N.B. : this is legacy code that can probably be removed ... to be confirmed
# get log with journalctl
result[log_path] = _get_journalctl_logs(log_path, int(number)).splitlines()
result[log_path] = _get_journalctl_logs(log_path, number).splitlines()
return result
@ -572,14 +567,22 @@ def _get_services():
services = yaml.load(f)
except:
return {}
else:
# some services are marked as None to remove them from YunoHost
# filter this
for key, value in services.items():
if value is None:
del services[key]
return services
# some services are marked as None to remove them from YunoHost
# filter this
for key, value in services.items():
if value is None:
del services[key]
# Stupid hack for postgresql which ain't an official service ... Can't
# really inject that info otherwise. Real service we want to check for
# status and log is in fact postgresql@x.y-main (x.y being the version)
if "postgresql" in services:
if "description" in services["postgresql"]:
del services["postgresql"]["description"]
services["postgresql"]["actual_systemd_service"] = "postgresql@9.6-main"
return services
def _save_services(services):
@ -674,8 +677,10 @@ def _find_previous_log_file(file):
def _get_journalctl_logs(service, number="all"):
services = _get_services()
systemd_service = services.get(service, {}).get("actual_systemd_service", service)
try:
return subprocess.check_output("journalctl -xn -u {0} -n{1}".format(service, number), shell=True)
return subprocess.check_output("journalctl -xn -u {0} -n{1}".format(systemd_service, number), shell=True)
except:
import traceback
return "error while get services logs from journalctl:\n%s" % traceback.format_exc()