feat :

--FAST API AGENT

.gitignore

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+venv/
+.env
+__pycache__/
+*.pyc
+.pytest_cache/
+.vscode/
+.idea/

feat.txt

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+| Area                 | What to show                                 | Why it matters                              |
+| -------------------- | -------------------------------------------- | ------------------------------------------- |
+| Node status          | Up/down, PostgreSQL service state, uptime    | Tells you whether the node is reachable     |
+| CPU                  | Current %, load average                      | Detects compute saturation                  |
+| Memory               | Used/free RAM, swap                          | Finds memory pressure                       |
+| Disk                 | Used %, free GB, IOPS, read/write latency    | Disk issues can kill DB performance         |
+| Network              | RX/TX, latency, packet loss                  | Important for distributed replication       |
+| Connections          | Active, idle, total, max connections         | Prevents connection exhaustion              |
+| Sessions             | Current sessions, user, DB, client IP        | Shows who is connected                      |
+| Transactions         | TPS, commits, rollbacks                      | Measures workload and failures              |
+| Query performance    | Avg query time, slow queries, top queries    | Finds performance bottlenecks               |
+| Long-running queries | Query, PID, runtime, user                    | Long queries often cause locks/bloat        |
+| Locks                | Waiting locks, blocking PID, blocked query   | Critical for troubleshooting stalls         |
+| Deadlocks            | Count and recent deadlocks                   | Shows transaction contention                |
+| Cache                | Buffer cache hit ratio                       | Indicates memory efficiency                 |
+| Tables               | Size, rows, scans, inserts, updates, deletes | Shows table activity                        |
+| Indexes              | Usage, unused indexes, index size            | Helps optimize queries/storage              |
+| WAL                  | WAL generated, retained, archived            | Important for replication and recovery      |
+| Checkpoints          | Checkpoint frequency/duration                | Too many checkpoints hurt performance       |
+| Vacuum               | Last vacuum/autovacuum, failures             | Prevents table bloat                        |
+| Analyze              | Last analyze, stats freshness                | Needed for query planner accuracy           |
+| Bloat                | Table/index bloat                            | Excess bloat wastes space and slows queries |
+| Replication          | Status, lag, slot status                     | Essential for HA/multi-master               |
+| Replication slots    | Active/inactive, retained WAL                | Inactive slots can fill disk                |
+| Backup               | Last backup, status, duration                | Tells you whether recovery is possible      |
+| Disk growth          | Database/table/WAL growth trend              | Helps capacity planning                     |
+| Errors               | PostgreSQL errors/warnings                   | Shows immediate operational issues          |
+| Security             | Failed logins, unusual connections           | Useful for security monitoring              |
+
+
+
+
+
+
+Using my uploaded photo, show me what I would have looked like around 1985. Preserve my identity, facial features, skin tone, age, and recognizable appearance.  Reimagine my hair, clothing, accessories, and surroundings with bold, unmistakably mid-1980s styling—expressive silhouettes, statement accessories, layered details, distinctive colors, and textures. Make it feel like a genuine 1985 photograph with analog grain, faded color, direct flash, and subtle softness. Add a period-accurate 1980s red-orange date stamp in the lower corner. No recognizable posters. No modern objects or text.
+
+
+
+

instructions.txt

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+|==================================================|
+|FIND VENV READING LOCATION AND OTHER INFO ABT VENV|
+|==================================================|
+which python
+which pip
+
+python --version
+
+pip show psycopg2
+pip show psycopg2-binary
+
+pip freeze | grep psycopg
+
+
+
+deactivate
+
+source /home/george/Desktop/PROJECT26/psqlDB/venv/bin/activate

main.py

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+import os
+import uvicorn
+from dotenv import load_dotenv
+from fastapi import FastAPI,Depends, Header, HTTPException, status
+import psycopg2
+from jwt import ExpiredSignatureError, InvalidTokenError
+import jwt
+load_dotenv()
+app = FastAPI()
+
+SECRET_KEY = os.getenv("SECRET_KEY")
+ALGORITHM = os.getenv("ALGORITHM", "HS256")
+
+
+
+
+def verify_token(
+    authorization: str = Header(None),
+):
+
+    if not authorization:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Authorization header missing",
+            headers={
+                "WWW-Authenticate": "Bearer"
+            },
+        )
+
+    parts = authorization.split()
+
+    if len(parts) != 2:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid Authorization header",
+        )
+
+    scheme = parts[0]
+    token = parts[1]
+
+    if scheme.lower() != "bearer":
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Authorization scheme must be Bearer",
+        )
+
+    try:
+
+        payload = jwt.decode(
+            token,
+            SECRET_KEY,
+            algorithms=[ALGORITHM],
+        )
+
+        return payload
+
+    except ExpiredSignatureError:
+
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token expired",
+        )
+
+    except InvalidTokenError:
+
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid token",
+        )
+ 
+
+
+
+
+
+@app.get("/")
+def root():
+    return {"message": "PostgreSQL Agent is running"}
+
+
+
+if __name__ == "__main__":
+    host = os.getenv("HOST", "127.0.0.1")
+    port = int(os.getenv("PORT", 9000))
+
+    uvicorn.run(
+        "main:app",
+        host=host,
+        port=port,
+        reload=True
+    )
+
+
+
+DB_CONFIG = {
+    "host": "172.16.10.178",
+    "port": 5444,
+    "dbname": "postgres",
+    "user": "postgres",
+    "password": "postgres",
+    "connect_timeout": 3,
+}
+
+NODE_NAME = "node3"
+
+
+@app.get("/node/status")
+def node_status(token_data=Depends(verify_token)):
+
+    try:
+        conn = psycopg2.connect(**DB_CONFIG)
+
+        conn.close()
+
+        return {
+            "node": NODE_NAME,
+            "online": True,
+            "status": "online"
+        }
+
+    except Exception as e:
+
+        return {
+            "node": NODE_NAME,
+            "online": False,
+            "status": "offline",
+            "error": str(e)
+        }

requirements.txt

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+annotated-doc==0.0.5
+annotated-types==0.8.0
+anyio==4.15.1
+click==8.5.0
+fastapi==0.141.1
+h11==0.16.0
+idna==3.19
+pydantic==2.13.5
+pydantic_core==2.46.5
+python-dotenv==1.2.3
+starlette==1.6.0
+typing-inspection==0.4.4
+typing_extensions==4.16.0
+uvicorn==0.53.0