Add endpoints to get, create and delete silences

src/murfey/server/api/session_info.py

@@ -2,9 +2,10 @@
 from logging import getLogger
 from pathlib import Path
 from typing import Dict, List, Optional
+import requests
 
 from fastapi import APIRouter, Depends, Request
-from fastapi.responses import FileResponse
+from fastapi.responses import FileResponse, JSONResponse
 from pydantic import BaseModel
 from sqlmodel import select
 
@@ -470,3 +471,51 @@
         visit_name=visit_name, session_id=session_id, tiff_path=tiff_path, db=db
     )
     return FileResponse(path=tiff_file) if isinstance(tiff_file, Path) else tiff_file
+
+#Methods for turning alerts on and off
+
+@router.get("/silences/{instrument_name}")
+def get_silences(instrument_name: MurfeyInstrumentName):
+    machine_config = machine_info_by_instrument(instrument_name)
+    alertmanager_url = machine_config.alertmanager_url
+    silences = requests.get(f"{alertmanager_url}/api/v2/silences?filter=microscope={sanitise(instrument_name)}")
+    active_silences = []
+    for silence in silences.json():
+        if silence['status']['state'] == 'active':
+            active_silences.append(silence)
+    return (active_silences)
+
+@router.post("/silences/{instrument_name}")
+def create_silence(instrument_name: MurfeyInstrumentName, end_time: datetime ):
+    machine_config = machine_info_by_instrument(instrument_name)
+    alertmanager_url = machine_config.alertmanager_url
+    start_time = datetime.now().astimezone().isoformat()
+    end_time = end_time.astimezone().isoformat()
+    silence_json = {
+    "matchers":[
+        {
+            "name": "microscope",
+            "value": instrument_name,
+            "isRegex": False
+        }],
+    "createdBy": "murfey",
+    "annotations":{"description": "Test"},
+    "comment": "silence created from murfey",
+    "status": {"state": "active"},
+    "startsAt": str(start_time),
+    "endsAt": str(end_time)
+    }
+    response = requests.post(f"{alertmanager_url}/api/v2/silences", json=silence_json)
+    return JSONResponse(status_code=response.status_code, content=response.json()) #return a response with same data and code as from alertmanager
+
+@router.delete("/silences/{instrument_name}") #delete all silences for given microscope
+def delete_silences(instrument_name: MurfeyInstrumentName):
+    machine_config = machine_info_by_instrument(instrument_name)
+    alertmanager_url = machine_config.alertmanager_url
+    silences = get_silences(instrument_name)
+    if len(silences) == 0:
+        return None
+    for silence in silences:
+        id = silence['id']
+        response = requests.delete(f"{alertmanager_url}/api/v2/silence/{id}")
+    return response  #returns final response in loop

src/murfey/util/config.py

@@ -118,6 +118,9 @@ class MachineConfig(BaseModel):  # type: ignore
     # Pydantic BaseModel settings
     model_config = ConfigDict(extra="allow")
 
+    # Alertmanager URL
+    alertmanager_url: str = "https://murfey-alertmanager.diamond.ac.uk"
+
     @field_validator("calibrations", mode="before")
     @classmethod
     def validate_calibration_data(