# See the License for the specific language governing permissions and
# limitations under the License.
-import sys
+from glob import glob
import logging
-
-sys.path.append("lib")
+from pathlib import Path
+from string import Template
+import sys
from ops.charm import CharmBase
from ops.framework import StoredState, Object
from ops.model import (
ActiveStatus,
MaintenanceStatus,
+ WaitingStatus,
)
-from glob import glob
-from pathlib import Path
-from string import Template
logger = logging.getLogger(__name__)
def __init__(self, framework, key):
super().__init__(framework, key)
self.state.set_default(spec=None)
+ self.state.set_default(kafka_host=None)
+ self.state.set_default(kafka_port=None)
+ self.state.set_default(mongodb_uri=None)
# Observe Charm related events
self.framework.observe(self.on.config_changed, self.on_config_changed)
self.framework.observe(self.on.start, self.on_start)
self.framework.observe(self.on.upgrade_charm, self.on_upgrade_charm)
+ # Relations
+ self.framework.observe(
+ self.on.kafka_relation_changed, self.on_kafka_relation_changed
+ )
+ self.framework.observe(
+ self.on.mongo_relation_changed, self.on_mongo_relation_changed
+ )
+
def _apply_spec(self):
# Only apply the spec if this unit is a leader.
- if not self.framework.model.unit.is_leader():
+ unit = self.model.unit
+ if not unit.is_leader():
+ unit.status = ActiveStatus("ready")
return
+ if not self.state.kafka_host or not self.state.kafka_port:
+ unit.status = WaitingStatus("Waiting for Kafka")
+ return
+ if not self.state.mongodb_uri:
+ unit.status = WaitingStatus("Waiting for MongoDB")
+ return
+
+ unit.status = MaintenanceStatus("Applying new pod spec")
+
new_spec = self.make_pod_spec()
if new_spec == self.state.spec:
+ unit.status = ActiveStatus("ready")
return
self.framework.model.pod.set_spec(new_spec)
self.state.spec = new_spec
+ unit.status = ActiveStatus("ready")
def make_pod_spec(self):
config = self.framework.model.config
ports = [
- {"name": "port", "containerPort": config["port"], "protocol": "TCP",},
+ {
+ "name": "port",
+ "containerPort": config["port"],
+ "protocol": "TCP",
+ },
]
- kubernetes = {
- "readinessProbe": {
- "tcpSocket": {"port": config["port"]},
- "timeoutSeconds": 5,
- "periodSeconds": 5,
- "initialDelaySeconds": 10,
- },
- "livenessProbe": {
- "tcpSocket": {"port": config["port"]},
- "timeoutSeconds": 5,
- "initialDelaySeconds": 45,
- },
- }
config_spec = {
"OSMPLA_MESSAGE_DRIVER": "kafka",
- "OSMPLA_MESSAGE_HOST": config["kafka_host"],
- "OSMPLA_MESSAGE_PORT": config["kafka_port"],
+ "OSMPLA_MESSAGE_HOST": self.state.kafka_host,
+ "OSMPLA_MESSAGE_PORT": self.state.kafka_port,
"OSMPLA_DATABASE_DRIVER": "mongo",
- "OSMPLA_DATABASE_URI": config["mongo_uri"],
+ "OSMPLA_DATABASE_URI": self.state.mongodb_uri,
"OSMPLA_GLOBAL_LOG_LEVEL": config["log_level"],
+ "OSMPLA_DATABASE_COMMONKEY": config["database_common_key"],
}
spec = {
"containers": [
{
"name": self.framework.model.app.name,
- "image": "{}".format(config["image"]),
+ "imageDetails": {
+ "imagePath": config["image"],
+ "username": config["image_username"],
+ "password": config["image_password"],
+ },
"ports": ports,
- "kubernetes": kubernetes,
"config": config_spec,
}
],
def on_config_changed(self, event):
"""Handle changes in configuration"""
- unit = self.model.unit
- unit.status = MaintenanceStatus("Applying new pod spec")
self._apply_spec()
- unit.status = ActiveStatus("Ready")
def on_start(self, event):
"""Called when the charm is being installed"""
- unit = self.model.unit
- unit.status = MaintenanceStatus("Applying pod spec")
self._apply_spec()
- unit.status = ActiveStatus("Ready")
def on_upgrade_charm(self, event):
"""Upgrade the charm."""
unit = self.model.unit
unit.status = MaintenanceStatus("Upgrading charm")
- self.on_start(event)
+ self._apply_spec()
+
+ def on_kafka_relation_changed(self, event):
+ kafka_host = event.relation.data[event.unit].get("host")
+ kafka_port = event.relation.data[event.unit].get("port")
+ if kafka_host and self.state.kafka_host != kafka_host:
+ self.state.kafka_host = kafka_host
+ if kafka_port and self.state.kafka_port != kafka_port:
+ self.state.kafka_port = kafka_port
+ self._apply_spec()
+
+ def on_mongo_relation_changed(self, event):
+ mongodb_uri = event.relation.data[event.unit].get("connection_string")
+ if mongodb_uri and self.state.mongodb_uri != mongodb_uri:
+ self.state.mongodb_uri = mongodb_uri
+ self._apply_spec()
if __name__ == "__main__":