def __init__(self, host, user='******', passwd='admin', port=8080):
(self.host, self.port) = (host, port)
self.log = logging.getLogger('pytomcat.Tomcat')
self.name = 'Tomcat at {0}:{1}'.format(host, port)
self.jmx = JMXProxyConnection(host, user, passwd, port)
self.mgr = ManagerConnection(host, user, passwd, port)
class Tomcat:
progress_callback = None
def __init__(self, host, user = '******', passwd = 'admin', port = 8080):
self.log = logging.getLogger('pytomcat.Tomcat')
self.name = 'Tomcat at {0}:{1}'.format(host,port)
self.jmx = JMXProxyConnection(host, user, passwd, port)
self.mgr = ManagerConnection(host, user, passwd, port)
def memory_info(self):
'''
Get memory pools, sizes and allocation information
>>> t.memory_info()
{ 'HeapMemory': {'max': 129957888, 'init': 0, 'used': 16853056, 'committed': 85000192}, ... }
'''
data = self.jmx.query('java.lang:type=Memory*,*')
meminfo = {}
generic = data.pop('java.lang:type=Memory')
for k in [ 'NonHeapMemoryUsage', 'HeapMemoryUsage' ]:
meminfo.update({ k.replace('Usage',''): generic[k] })
for k, v in data.iteritems():
if k.startswith('java.lang:type=MemoryPool,'):
name = k.replace('java.lang:type=MemoryPool,name=','')
meminfo.update({ name: v['Usage']})
return meminfo
def memory_usage(self):
'''
Get memory pool usage as percentage of allowed maximum.
>>> t.memory_usage()
{ 'HeapMemory': 10, 'NonHeapMemory': 15, ... }
'''
usage = {}
for k, v in self.memory_info().iteritems():
usage[k] = 100 * v['used'] / v['max']
return usage
def find_pools_over(self, percentage):
return list(k for k, v in self.memory_usage().iteritems() if v > percentage)
def run_gc(self):
'''
Invoke Garbage Collector to (hopefully) reclaim memory
'''
return self.jmx.invoke('java.lang:type=Memory', 'gc')
def dump_all_threads(self):
return self.jmx.invoke('java.lang:type=Threading', 'dumpAllThreads', 'true', 'true')
def vhosts(self):
'''
Return configured vhosts
>>> for k, v in t.vhosts().items():
... print 'Host: {0}'.format(v['name'])
...
Host: localhost
>>>
'''
return self.jmx.query('Catalina:type=Host,*')
def deployers(self):
'''
Return available application deployers (each configured vhost
has its own deployer)
'''
return self.jmx.query('Catalina:type=Deployer,*')
def has_cluster(self):
'''
Return true if this instance of Tomcat is member of a cluster
'''
return len(self.jmx.query('Catalina:type=Cluster')) > 0
def server_status(self):
'''
Return the state name of the Tomcat server component.
>>> t.server_status()
'STARTED'
See Also:
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/Lifecycle.html
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/LifecycleState.html
'''
return self.jmx.get('Catalina:type=Server', 'stateName')
@property
def _restarter(self):
try:
return self._restarter_obj
except AttributeError:
self._restarter_obj = self._find_restarter()
return self._restarter_obj
def _find_restarter(self):
restarters = [ _JSWRestarter(self), _YAJSWRestarter(self) ]
for r in restarters:
if r.detect():
return r
return None
def can_restart(self):
'''
Return true is this instance of Tomcat can be restarted remotely.
This will only work if Tomcat is launched by a supported wrapper
which exposes this functionality via JMX.
e.g. Java Service Wrapper http://wrapper.tanukisoftware.com or
Yet Another Java Service Wrapper http://yajsw.sourceforge.net/
>>> t.can_restart()
True
'''
return self._restarter != None
def restart(self, timeout=600):
'''
Restart this instance of Tomcat.
Restarting will only work if Tomcat is launched by a supported wrapper
which exposes restarting functionality via JMX.
>>> t.restart()
'''
def started():
try:
return self.server_status() == 'STARTED'
except:
return False
if not self.can_restart():
raise TomcatError('{0} does not support remote restarting'
.format(self.name))
self._restarter.restart()
if not wait_until(lambda: not started(), timeout):
raise TomcatError('Timed out waiting for {0} to shut down'
.format(self.name))
if not wait_until(started, timeout):
raise TomcatError('Timed out waiting for {0} to boot up'
.format(self.name))
def cluster_name(self):
'''
Return the name of the cluster
'''
return self.jmx.get('Catalina:type=Cluster', 'clusterName')
def cluster_members(self):
'''
Return all members of the cluster
>>> map(lambda x: x['hostname'], t.cluster_members().values())
['192.168.56.101', '192.168.56.102', '192.168.56.103']
'''
invalid_ips = [ '0.0.0.0', '255.255.255.255' ]
def is_valid(m):
return ( m['hostname'] not in invalid_ips )
m = self.jmx.query('Catalina:type=Cluster,component=Member,*')
return dict((k, v) for k, v in m.iteritems() if is_valid(v))
def active_members(self):
'''
Return only active members of the cluster
'''
def is_active(m):
return ( m['ready'] and not m['failing'] and not m['suspect'] )
m = self.cluster_members()
return dict((k, v) for k, v in m.iteritems() if is_active(v))
def list_webapps(self, app='*', vhost='*'):
'''
List webapps running on the specified host
>>> for v in t.list_webapps().values():
... print '{baseName:<20} {path:<20} {stateName}'.format(**v)
...
manager /manager STARTED
docs /docs STARTED
ROOT None STARTED
examples /examples STARTING
host-manager /host-manager STOPPED
>>>
See Also:
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/Lifecycle.html
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/LifecycleState.html
'''
def sanitize_name(name):
return '/' if name == None else name
rv = self.jmx.query(
'Catalina:j2eeType=WebModule,name=//{0}/{1},*'
.format(vhost, re.sub('^/', '', app)))
return dict((sanitize_name(v['name']),v) for k, v in rv.iteritems())
def find_managers(self, app='*', vhost='*'):
'''
TODO
'''
def extract_context(mgr_id):
# FIXME: depends on the exact ordering of parts in the object ID
return re.match(
'^Catalina:type=Manager,context=(.+?),host=(.+?)',
mgr_id).group(1)
rv = self.jmx.query(
'Catalina:type=Manager,context={0},host={1}'
.format(app, vhost))
return dict((extract_context(k),v) for k, v in rv.iteritems())
def _list_session_ids(self, mgr_obj_id):
ids = self.jmx.invoke(mgr_obj_id, 'listSessionIds')
if ids == None:
return []
else:
return ids.rstrip().split(' ')
def list_sessions(self, app='*', vhost='*'):
'''
TODO
'''
rv = {}
for k, v in self.find_managers(app, vhost).iteritems():
if v['activeSessions'] > 0:
rv[k] = self._list_session_ids(v['objectName'])
else:
rv[k] = []
return rv
def undeploy_old_versions(self, vhost=None):
'''
Invoke 'checkUndeploy' on 'Catalina:type=Deployer' to undeploy old
versions of webapps that share the same path. The distinction is made
by comparing the 'webappVersion' property. Webapps must have no active
sessions in order to be undeployed by this call.
NB! As of Tomcat 7.0.37 versions are compared as strings
thus 2 > 10, however 02 < 10
>>> t.undeploy_old_versions('localhost') # Undeploy from localhost
>>> t.undeploy_old_versions() # Undeploy from all configured vhosts
'''
if vhost == None:
deployers = self.deployers().keys()
else:
deployers = [ 'Catalina:type=Deployer,host={0}'.format(vhost) ]
for d in deployers:
self.jmx.invoke(d, 'checkUndeploy')
def find_connectors(self):
'''
Return the list of active Tomcat connector names.
>>> t.find_connectors()
['Connector[HTTP/1.1-8080]', 'Connector[AJP/1.3-8009]']
'''
return self.jmx.invoke('Catalina:type=Service', 'findConnectors')
def max_heap(self):
return self.jmx.get('java.lang:type=Memory', 'HeapMemoryUsage', 'max')
def max_nonheap(self):
return self.jmx.get('java.lang:type=Memory', 'NonHeapMemoryUsage', 'max')
def deploy(self, filename, context=None, vhost='localhost'):
'''
Deploy a Web application archive (WAR)
>>> t.deploy('/tmp/myapp.war')
'''
(ctx, path, version) = parse_warfile(filename)
if context == None:
context = ctx
return self.mgr.deploy(filename, context, vhost)
def undeploy(self, context, vhost='localhost'):
'''
Remove a web application from the server
>>> t.undeploy('/myapp')
'''
self.mgr.undeploy(context, vhost)
def _expire_session(self, mgr_obj_id, session_id):
self.jmx.invoke(mgr_obj_id, 'expireSession', session_id)
def expire_sessions(self, app, vhost = '*'):
'''
Forcefully expire ALL active sessions in a webapp
>>> t.expire_sessions('/manager')
'''
sessions = self.list_sessions(app, vhost)
if len(sessions) <= 0:
raise TomcatError("Unable to find context '{0}' from vhost '{1}'"
.format(app, vhost))
mgrs = self.find_managers(app, vhost)
for ctx, ids in sessions.iteritems():
for id in ids:
if not ctx in mgrs:
raise TomcatError(
"Unable to find manager for context '{0}' from vhost '{1}'"
.format(app, vhost))
self._expire_session(mgrs[ctx]['objectName'], id)
def set_progress_callback(self, callback):
self.progress_callback = callback
self.mgr.progress_callback = callback
class Tomcat:
progress_callback = None
def __init__(self, host, user='******', passwd='admin', port=8080):
(self.host, self.port) = (host, port)
self.log = logging.getLogger('pytomcat.Tomcat')
self.name = 'Tomcat at {0}:{1}'.format(host, port)
self.jmx = JMXProxyConnection(host, user, passwd, port)
self.mgr = ManagerConnection(host, user, passwd, port)
def memory_info(self):
'''
Get memory pools, sizes and allocation information
>>> t.memory_info()
{ 'HeapMemory': {'max': 129957888, 'init': 0, 'used': 16853056, 'committed': 85000192}, ... }
'''
data = self.jmx.query('java.lang:type=Memory*,*')
meminfo = {}
generic = data.pop('java.lang:type=Memory')
for k in ['NonHeapMemoryUsage', 'HeapMemoryUsage']:
meminfo.update({k.replace('Usage', ''): generic[k]})
for k, v in data.iteritems():
if k.startswith('java.lang:type=MemoryPool,'):
name = k.replace('java.lang:type=MemoryPool,name=', '')
meminfo.update({name: v['Usage']})
return meminfo
def memory_usage(self):
'''
Get memory pool usage as percentage of allowed maximum.
>>> t.memory_usage()
{ 'HeapMemory': 10, 'NonHeapMemory': 15, ... }
'''
usage = {}
for k, v in self.memory_info().iteritems():
usage[k] = 100 * v['used'] / v['max']
return usage
def find_pools_over(self, percentage):
return list(k for k, v in self.memory_usage().iteritems()
if v > percentage)
def run_gc(self):
'''
Invoke Garbage Collector to (hopefully) reclaim memory
'''
return self.jmx.invoke('java.lang:type=Memory', 'gc')
def dump_all_threads(self):
return self.jmx.invoke('java.lang:type=Threading', 'dumpAllThreads',
'true', 'true')
def vhosts(self):
'''
Return configured vhosts
>>> for k, v in t.vhosts().items():
... print 'Host: {0}'.format(v['name'])
...
Host: localhost
>>>
'''
return self.jmx.query('Catalina:type=Host,*')
def deployers(self):
'''
Return available application deployers (each configured vhost
has its own deployer)
'''
return self.jmx.query('Catalina:type=Deployer,*')
def has_cluster(self):
'''
Return true if this instance of Tomcat is member of a cluster
'''
return len(self.jmx.query('Catalina:type=Cluster')) > 0
def server_status(self):
'''
Return the state name of the Tomcat server component.
>>> t.server_status()
'STARTED'
See Also:
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/Lifecycle.html
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/LifecycleState.html
'''
return self.jmx.get('Catalina:type=Server', 'stateName')
@property
def _restarter(self):
try:
return self._restarter_obj
except AttributeError:
self._restarter_obj = self._find_restarter()
return self._restarter_obj
def _find_restarter(self):
restarters = [_JSWRestarter(self), _YAJSWRestarter(self)]
for r in restarters:
if r.detect():
return r
return None
def can_restart(self):
'''
Return true is this instance of Tomcat can be restarted remotely.
This will only work if Tomcat is launched by a supported wrapper
which exposes this functionality via JMX.
e.g. Java Service Wrapper http://wrapper.tanukisoftware.com or
Yet Another Java Service Wrapper http://yajsw.sourceforge.net/
>>> t.can_restart()
True
'''
return self._restarter != None
def restart(self, timeout=600):
'''
Restart this instance of Tomcat.
Restarting will only work if Tomcat is launched by a supported wrapper
which exposes restarting functionality via JMX.
>>> t.restart()
'''
def started():
try:
return self.server_status() == 'STARTED'
except:
return False
if not self.can_restart():
raise TomcatError('{0} does not support remote restarting'.format(
self.name))
self._restarter.restart()
if not wait_until(lambda: not started(), timeout):
raise TomcatError('Timed out waiting for {0} to shut down'.format(
self.name))
if not wait_until(started, timeout):
raise TomcatError('Timed out waiting for {0} to boot up'.format(
self.name))
def cluster_name(self):
'''
Return the name of the cluster
'''
return self.jmx.get('Catalina:type=Cluster', 'clusterName')
def cluster_members(self):
'''
Return all members of the cluster
>>> map(lambda x: x['hostname'], t.cluster_members().values())
['192.168.56.101', '192.168.56.102', '192.168.56.103']
'''
invalid_ips = ['0.0.0.0', '255.255.255.255']
def is_valid(m):
return (m['hostname'] not in invalid_ips)
m = self.jmx.query('Catalina:type=Cluster,component=Member,*')
return dict((k, v) for k, v in m.iteritems() if is_valid(v))
def active_members(self):
'''
Return only active members of the cluster
'''
def is_active(m):
return (m['ready'] and not m['failing'] and not m['suspect'])
m = self.cluster_members()
return dict((k, v) for k, v in m.iteritems() if is_active(v))
def list_webapps(self, app='*', vhost='*'):
'''
List webapps running on the specified host
>>> for v in t.list_webapps().values():
... print '{baseName:<20} {path:<20} {stateName}'.format(**v)
...
manager /manager STARTED
docs /docs STARTED
ROOT None STARTED
examples /examples STARTING
host-manager /host-manager STOPPED
>>>
See Also:
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/Lifecycle.html
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/LifecycleState.html
'''
def sanitize_name(name):
return '/' if name == None else name
rv = self.jmx.query(
'Catalina:j2eeType=WebModule,name=//{0}/{1},*'.format(
vhost, re.sub('^/', '', app)))
return dict((sanitize_name(v['name']), v) for k, v in rv.iteritems())
def find_managers(self, app='*', vhost='*'):
'''
TODO
'''
def extract_context(mgr_id):
# FIXME: depends on the exact ordering of parts in the object ID
return re.match('^Catalina:type=Manager,context=(.+?),host=(.+?)',
mgr_id).group(1)
rv = self.jmx.query(
'Catalina:type=Manager,context={0},host={1}'.format(app, vhost))
return dict((extract_context(k), v) for k, v in rv.iteritems())
def _list_session_ids(self, mgr_obj_id):
ids = self.jmx.invoke(mgr_obj_id, 'listSessionIds')
if ids == None:
return []
else:
return ids.rstrip().split(' ')
def list_sessions(self, app='*', vhost='*'):
'''
TODO
'''
rv = {}
for k, v in self.find_managers(app, vhost).iteritems():
if v['activeSessions'] > 0:
rv[k] = self._list_session_ids(v['objectName'])
else:
rv[k] = []
return rv
def undeploy_old_versions(self, vhost=None):
'''
Invoke 'checkUndeploy' on 'Catalina:type=Deployer' to undeploy old
versions of webapps that share the same path. The distinction is made
by comparing the 'webappVersion' property. Webapps must have no active
sessions in order to be undeployed by this call.
NB! As of Tomcat 7.0.37 versions are compared as strings
thus 2 > 10, however 02 < 10
>>> t.undeploy_old_versions('localhost') # Undeploy from localhost
>>> t.undeploy_old_versions() # Undeploy from all configured vhosts
'''
if vhost == None:
deployers = self.deployers().keys()
else:
deployers = ['Catalina:type=Deployer,host={0}'.format(vhost)]
for d in deployers:
self.jmx.invoke(d, 'checkUndeploy', timeout=20)
def find_connectors(self):
'''
Return the list of active Tomcat connector names.
>>> t.find_connectors()
['Connector[HTTP/1.1-8080]', 'Connector[AJP/1.3-8009]']
'''
return self.jmx.invoke('Catalina:type=Service', 'findConnectors')
def max_heap(self):
return self.jmx.get('java.lang:type=Memory', 'HeapMemoryUsage', 'max')
def max_nonheap(self):
return self.jmx.get('java.lang:type=Memory', 'NonHeapMemoryUsage',
'max')
def deploy(self, filename, context=None, vhost='localhost'):
'''
Deploy a Web application archive (WAR)
>>> t.deploy('/tmp/myapp.war')
'''
(ctx, path, version) = parse_warfile(filename)
if context == None:
context = ctx
return self.mgr.deploy(filename, context, vhost)
def undeploy(self, context, vhost='localhost'):
'''
Remove a web application from the server
>>> t.undeploy('/myapp')
'''
self.mgr.undeploy(context, vhost)
def _expire_session(self, mgr_obj_id, session_id):
self.jmx.invoke(mgr_obj_id, 'expireSession', session_id)
def expire_sessions(self, app, vhost='*'):
'''
Forcefully expire ALL active sessions in a webapp
>>> t.expire_sessions('/manager')
'''
sessions = self.list_sessions(app, vhost)
if len(sessions) <= 0:
raise TomcatError(
"Unable to find context '{0}' from vhost '{1}'".format(
app, vhost))
mgrs = self.find_managers(app, vhost)
for ctx, ids in sessions.iteritems():
for id in ids:
if not ctx in mgrs:
raise TomcatError(
"Unable to find manager for context '{0}' from vhost '{1}'"
.format(app, vhost))
self._expire_session(mgrs[ctx]['objectName'], id)
def set_progress_callback(self, callback):
self.progress_callback = callback
self.mgr.progress_callback = callback
def __init__(self, host, user = '******', passwd = 'admin', port = 8080):
self.log = logging.getLogger('pytomcat.Tomcat')
self.name = 'Tomcat at {0}:{1}'.format(host,port)
self.jmx = JMXProxyConnection(host, user, passwd, port)
self.mgr = ManagerConnection(host, user, passwd, port)
