class Check(db.Model):
"""
Healthcheck configurations.
"""
__tablename__ = 'checks'
id = db.Column(db.Integer, primary_key=True)
service_id = db.Column(db.Integer, db.ForeignKey('services.id'))
service = db.relationship("Service", back_populates="checks")
node_id = db.Column(db.Integer, db.ForeignKey('nodes.id'))
node = db.relationship("Node", back_populates="checks")
name = db.Column(db.String(80))
check = db.Column(db.String(120))
# results = db.relationship("Result", back_populates="check")
def __init__(self, name, check, service):
self.name = name
self.check = check
self.service_id = service
def __repr__(self):
return '<Check %s>' % self.id
def to_json(self):
return {
'id': self.id,
'name': self.name,
'check': self.check,
'url': url_for('api.get_check', id=self.id, _external=True),
'service': {
'id': self.service_id,
'url': url_for('api.get_service', id=self.service_id, _external=True)
}
}
class Node(db.Model):
__tablename__ = 'nodes'
id = db.Column(db.Integer, primary_key=True)
checks = db.relationship("Check", back_populates="node")
results = db.relationship("Result", back_populates="node")
name = db.Column(db.String(80))
token = db.Column(db.String(80))
def __init__(self, name):
self.name = name
self.token = '1234567890'
class Result(db.Model):
"""
Results from Healthchecks.
"""
# So I'm really not sure how best to manage the result objects. For now
# it seems best to just create them using the entire dictionary, populating
# the relevant fields...
__tablename__ = 'results'
id = db.Column(db.Integer, primary_key=True)
check_id = db.Column(db.Integer, db.ForeignKey('checks.id'))
check = db.relationship("Check", back_populates="results")
node_id = db.Column(db.Integer, db.ForeignKey('nodes.id'))
node = db.relationship("Node", back_populates="results")
code = db.Column(db.Integer)
status = db.Column(db.Text)
time = db.Column(db.Integer)
headers = db.Column(db.Text)
content = db.Column(db.Text)
timestamp = db.Column(db.DateTime)
success = db.Column(db.Boolean)
url = db.Column(db.Text)
def __init__(self, node, data):
self.node_id = node
self.check_id = data['id']
self.code = data['metadata']['code']
self.status = data['metadata']['status']
self.time = data['metadata']['time']
self.headers = str(data['metadata']['headers'])
self.content = data['metadata']['content']
self.timestamp = datetime.strptime(data['metadata']['timestamp'],
'%Y-%m-%d %H:%M:%S')
self.success = data['success']
self.url = data['url']
def __repr__(self):
return '<Result %i>' % id
class Check(db.Model):
"""
Healthcheck configurations.
"""
__tablename__ = 'checks'
id = db.Column(db.Integer, primary_key=True)
service_id = db.Column(db.Integer, db.ForeignKey('services.id'))
node_id = db.Column(db.Integer, db.ForeignKey('nodes.id'))
service = db.relationship("Service", back_populates="checks")
node = db.relationship("Node", back_populates="checks")
results = db.relationship("Result", back_populates="check")
name = db.Column(db.String(80))
url = db.Column(db.String(80))
def __init__(self, name, url, service, node):
self.name = name
self.url = url
self.service_id = service
self.node_id = node
def __repr__(self):
return '<Check "%s - %s">' % (self.service.name, self.name)
class Service(db.Model):
"""
Logical grouping of checks.
"""
__tablename__ = 'services'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
checks = db.relationship("Check", back_populates="service")
def __init__(self, name):
self.name = name
def __repr__(self):
return '<Service "%s">' % self.name
class Node(db.Model):
"""
Node objects are TrafficLights agents, responsible for running healthchecks
and submitting results back to the TrafficLights server.
"""
__tablename__ = 'nodes'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
checks = db.relationship("Check", back_populates="node")
def __init__(self, name):
self.name = name
def __repr__(self):
return '<Node %s>' % self.id
def generate_auth_token(self, expiration):
"""Generate authentication token."""
s = Serializer(current_app.config['SECRET_KEY'], expires_in = expiration)
return s.dumps({'id': self.id})
@staticmethod
def verify_auth_token(token):
"""Return Node object which matches authentication token"""
s = Serializer(current_app.config['SECRET_KEY'])
try:
data = s.loads(token)
except:
raise
return None
return Node.query.get(data['id'])
def to_json(self):
return {
'id': self.id,
'name': self.name,
'url': url_for('api.get_node', id=self.id, _external=True),
'checks': url_for('api.get_checks_for_node', id=self.id, _external=True)
}
class Service(db.Model):
"""
Logical grouping of checks.
"""
__tablename__ = 'services'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
checks = db.relationship("Check", back_populates="service")
def __init__(self, name):
self.name = name
def __repr__(self):
return '<Service "%s">' % self.id
def to_json(self):
return {
'id': self.id,
'name': self.name,
'url': url_for('api.get_service', id=self.id, _external=True),
'checks': url_for('api.get_checks_for_service', id=self.id, _external=True)
}