app-MAIL-temp/monitor/upcloud.py

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from app.log import LOG
from monitor.metric import UpcloudMetric, UpcloudMetrics, UpcloudRecord
import base64
import requests
from typing import Any
BASE_URL = "https://api.upcloud.com"
def get_metric(json: Any, metric: str) -> UpcloudMetric:
records = []
if metric in json:
metric_data = json[metric]
data = metric_data["data"]
cols = list(map(lambda x: x["label"], data["cols"][1:]))
latest = data["rows"][-1]
time = latest[0]
for column_idx in range(len(cols)):
value = latest[1 + column_idx]
# If the latest value is None, try to fetch the second to last
if value is None:
value = data["rows"][-2][1 + column_idx]
if value is not None:
label = cols[column_idx]
if "(master)" in label:
db_role = "master"
else:
db_role = "standby"
records.append(
UpcloudRecord(time=time, db_role=db_role, label=label, value=value)
)
else:
LOG.warn(f"Could not get value for metric {metric}")
return UpcloudMetric(metric_name=metric, records=records)
def get_metrics(json: Any) -> UpcloudMetrics:
return UpcloudMetrics(
metrics=[
get_metric(json, "cpu_usage"),
get_metric(json, "disk_usage"),
get_metric(json, "diskio_reads"),
get_metric(json, "diskio_writes"),
get_metric(json, "load_average"),
get_metric(json, "mem_usage"),
get_metric(json, "net_receive"),
get_metric(json, "net_send"),
]
)
class UpcloudClient:
def __init__(self, username: str, password: str):
if not username:
raise Exception("UpcloudClient username must be set")
if not password:
raise Exception("UpcloudClient password must be set")
client = requests.Session()
encoded_auth = base64.b64encode(
f"{username}:{password}".encode("utf-8")
).decode("utf-8")
client.headers = {"Authorization": f"Basic {encoded_auth}"}
self.__client = client
def get_metrics(self, db_uuid: str) -> UpcloudMetrics:
url = f"{BASE_URL}/1.3/database/{db_uuid}/metrics?period=hour"
LOG.d(f"Performing request to {url}")
response = self.__client.get(url)
LOG.d(f"Status code: {response.status_code}")
if response.status_code != 200:
return UpcloudMetrics(metrics=[])
as_json = response.json()
return get_metrics(as_json)