add Azure hellopy-read-random raw-code

Author: ypwong99

src/setup/deployment/raw-code/serverless/azure/hellopy-read-random/main.py

@@ -0,0 +1,52 @@
+import json
+import os
+import time
+import random
+
+import azure.functions as func
+
+
+def main(req: func.HttpRequest, context: func.Context) -> func.HttpResponse:
+    incr_limit = int(req.params.get('IncrementLimit')) if req.params.get('IncrementLimit') else None
+    if not incr_limit:
+        try:
+            req_body = req.get_json()
+        except ValueError:
+            incr_limit = 0
+            pass
+        else:
+            incr_limit = int(req_body.get('IncrementLimit')) if req_body.get('IncrementLimit') else 0
+    else:
+        incr_limit = 0
+
+    simulate_work(incr_limit)
+    read_filler_file(f"{context.function_directory}/../filler.file")
+
+    return func.HttpResponse(
+        body=json.dumps({
+            "RequestID": context.invocation_id,
+            "TimestampChain": [str(time.time_ns())]
+        }, indent=4),
+        status_code=200,
+        headers={
+            "Content-Type": "application/json"
+        }
+    )
+
+
+def simulate_work(increment):
+    # MAXNUM = 6103705
+    num = 0
+    while num < increment:
+        num += 1
+
+
+def read_filler_file(path: str) -> None:
+    file_size = os.stat(path).st_size
+    number_of_pages = file_size // 4096
+    with open(path, 'rb') as f:
+        for _ in range(100):
+            page_number = random.randrange(0, number_of_pages)
+            page_offset = page_number * 4096
+            f.seek(page_offset)
+            f.read(1)