get stats from remote skeleton

balancer/stats.py

+import requests
+import json
+import logging
+
+logger = logging.getLogger(__name__)
+
+PREFIX = "RBstat?"
+MEM_ALLOCATED_TARGET = "target=circle.*.memory.allocated&format=json&time=-1min"
+MEM_USAGE_TARGET = "circle.*.memory.usage&format=json&time=-1min"
+VMCOUNT_TARGET = "target=circle.*.vmcount&format=json&time=-1min"
+CPU_PERCENT_TARGET = "target=circle.*.cpu.percent&format=json&time=-1min"
+
+STAT_TARGETS = {
+    "mem_allocated": MEM_ALLOCATED_TARGET,
+    "mem_usage": MEM_USAGE_TARGET,
+    "vmcount": VMCOUNT_TARGET,
+    "cpu_percent": CPU_PERCENT_TARGET,
+}
+
+
+def get_stat_from_dc(datacenter):
+    stat = {}
+    for key, target in STAT_TARGETS.items():
+        url: str = f"{datacenter}/{PREFIX}{target}"
+        req = requests.request(
+            method="GET",
+            url=url,
+            verify=False,
+        )
+        if int(req.status_code / 100) != 2:
+            logger.warning(
+                f"cannot retrieve the data, from dc: {datacenter}  ({req.status_code})"
+            )
+        else:
+            data = json.loads(req.content)
+            stat[key] = [i["datapoints"][0][0] for i in data]
+
+    return stat

balancer/util.py

 from fastapi.responses import ORJSONResponse
+from balancer.stats import get_stat_from_dc
 from sredis.sredis import (
     get_all_datacenter,
     get_datacenter_token,
@@ -10,6 +11,9 @@ from fastapi import HTTPException
 import requests
 import json
 from core.models import ResourcePoolSchema
+import logging
+
+logger = logging.getLogger(__name__)
 
 
 def proxy_datacenters(
@@ -80,10 +84,6 @@ def create_vm_from_template(
         raise HTTPException(status_code=500, detail="Remote server error")
 
 
-def get_stat_from_dc(datacenter):
-    pass
-
-
 def create_rp(username: str, rp: ResourcePoolSchema):
     if rp.manual:
         id = 0

main.py

@@ -38,6 +38,9 @@ requests.packages.urllib3.disable_warnings()
 Migrator().run()
 
 app = FastAPI()
+
+reset()
+
 add_datacenter("https://kappa1.fured.cloud.bme.hu")
 add_datacenter("https://kappa2.fured.cloud.bme.hu")
 add_datacenter("https://kappa3.fured.cloud.bme.hu")
@@ -46,8 +49,6 @@ create_superpuser(
     User(username="admin", email="example@domain.com", password=os.getenv("ADMIN_PASS"))
 )
 
-reset()
-
 
 @app.post("/user/signup", tags=["user"])
 async def create_user(user: User = Body(...)):

sredis/sredis.py

 import redis
 import requests
+from balancer.stats import get_stat_from_dc
 from core.models import UserLoginSchema, ResourceStat
 from .models import PUser, DataCenterResource, ResourcePool
 from passlib.hash import pbkdf2_sha256
@@ -45,22 +46,24 @@ def get_all_datacenter():
 def update_status(datacenter):
     status = "OK" if get_status(datacenter_url=datacenter) is True else "Wrong"
     if status == "Wrong":
-        logging.warning(f"{datacenter} is inactive status")
+        logger.warning(f"{datacenter} is inactive status")
     r.hset("datacenter_status", datacenter, status)
 
 
 def update_datacenter_status():
-    logging.info("Update datacenters status")
+    logger.info("Update datacenters status")
     all_keys = r.hgetall("datacenters_hash")
     for dc in all_keys.values():
         update_status(datacenter=dc)
 
 
 def update_datacenter_stats():
-    logging.info("Update datacenters stats")
+    logger.info("Update datacenters stats")
     all_keys = r.hgetall("datacenters_hash")
     for dc in all_keys.values():
-        logging.info("Get stats from", dc)
+        logger.info(f"Get stats from {dc}")
+        get_stat_from_dc(dc)
+        # update_stats(stats)
 
 
 def add_datacenter(datacenter: str):