added option for streaming from csv

preprocessing/docker-compose.yml

@@ -50,10 +50,13 @@ services:
         aliases:
           - pcap_streamer
     volumes:
-      - "/host_mnt/c/Users/akash/storage/Asu/sem3/dds/project:/data/pcap"
+      # - "/host_mnt/c/Users/akash/storage/Asu/sem3/dds/project:/data/pcap"
+      - "./:/data/pcap"
+      - "./:/data/csv"
     environment:
       PCAP_FILE: /data/pcap/202310081400.pcap
-    command: ["sh", "-c", "sleep 30 && python /app/pcap_processor.py -f /data/pcap/202310081400.pcap -s --stream_size 1000"]
+    # command: ["sh", "-c", "sleep 30 && python /app/pcap_processor.py -f /data/pcap/202310081400.pcap -s --stream_size 1000"]
+    command: ["sh", "-c", "sleep 30 && python /app/pcap_processor.py -c /data/csv/sample_output.csv -s --stream_size 1000"]
     deploy:
       replicas: 1
       restart_policy:

preprocessing/pcap_processor.py

@@ -113,6 +113,21 @@ def create_pkt_object(pkt: Packet) -> dict:
 
     return res_json
 
+
+def row_to_dict(pkt_row: list) -> dict:
+    """make dict from CSV row"""
+
+    return {
+        "time": float(pkt_row[0]),
+        "l4_proto": pkt_row[1],
+        "src_addr": pkt_row[2],
+        "dst_addr": pkt_row[3],
+        "src_port": int(pkt_row[4]),
+        "dst_port": int(pkt_row[5]),
+        "pkt_len": int(pkt_row[6]),
+    }
+
+
 def prep_csv(out_file: str):
     with open(out_file, "w", newline="") as csvfile:
         writer = csv.writer(csvfile)
@@ -139,7 +154,8 @@ def pkts_write_csv(pkts: list, out_file: str):
 
 if __name__ == "__main__":
     argp = ArgumentParser()
-    argp.add_argument("-f", "--pcap_file", required=True, dest="_pcap")
+    argp.add_argument("-f", "--pcap_file", required=False, dest="_pcap")
+    argp.add_argument("-c", "--csv_file", required=False, dest="_csv")
     argp.add_argument("-o", "--out_file", required=False, dest="_out")
     argp.add_argument("--stream_size", required=False, default=10000, dest="_streamsize")
     argp.add_argument(
@@ -169,6 +185,7 @@ if __name__ == "__main__":
     args = argp.parse_args()
 
     pcap_file = args._pcap
+    csv_file = args._csv
     out_file = args._out
     streaming = args._stream
     sample = args._sample
@@ -179,41 +196,59 @@ if __name__ == "__main__":
     sample_size = samplesize #1000000
     batch_size = 100 #100000
 
-    pcap_rdr = PcapReader(pcap_file)
-    if not streaming:
-        assert args._out and args._out != ""
-        prep_csv(out_file)
+    # if preprocessed data ready for streaming
+    if csv_file:
+        with open(csv_file, newline="") as f:
+            csv_rdr = csv.reader(f)
+            next(csv_rdr)  # skip headers
+            pkts = []
 
-    pkts = []
-    cnt = 0
-    seen_count = 0
-    for idx, pkt in enumerate(pcap_rdr):
-        seen_count += 1
-        # filter packets
-        if not pkt_filter(pkt):
-            continue
+            for idx, row in enumerate(csv_rdr):
+                # direct streaming to kafka goes here
+                producer.client.send(KAFKA_TOPIC, row_to_dict(row))
+                dbg_print(row_to_dict(row))
+                dbg_print("streamed packet", idx)
+                if idx > sample_size:
+                    break
+            dbg_print(f"total streamed: {idx}")
 
+    # otherwise, process packets
+    else:
+        pcap_rdr = PcapReader(pcap_file)
         if not streaming:
-            # write to file
-            pkts.append(pkt_extract(pkt))
+            assert args._out and args._out != ""
+            prep_csv(out_file)
 
-            if sample and idx > sample_size:
-                break
+        pkts = []
+        cnt = 0
+        seen_count = 0
+        for idx, pkt in enumerate(pcap_rdr):
+            seen_count += 1
+            # filter packets
+            if not pkt_filter(pkt):
+                continue
 
-            if idx > 0 and idx % batch_size == 0:
-                pkts_write_csv(pkts, out_file)
-                pkts = []
-        else:
-            # direct streaming to kafka goes here
-            packet_data = create_pkt_object(pkt)
-            producer.client.send(KAFKA_TOPIC, packet_data)
-            cnt += 1
-            #print(f"streamed packet at index {idx} ")
-            if idx > sample_size: break
-    
-    print(f"total seen: {seen_count-1}")
-    print(f"total streamed: {cnt}")
-    # flush remaining
-    if not streaming and len(pkts) > 0:
-        pkts_write_csv(pkts, out_file)
+            if not streaming:
+                # write to file
+                pkts.append(pkt_extract(pkt))
 
+                if sample and idx > sample_size:
+                    break
+
+                if idx > 0 and idx % batch_size == 0:
+                    pkts_write_csv(pkts, out_file)
+                    pkts = []
+            else:
+                # direct streaming to kafka goes here
+                packet_data = create_pkt_object(pkt)
+                producer.client.send(KAFKA_TOPIC, packet_data)
+                cnt += 1
+                # print(f"streamed packet at index {idx} ")
+                if idx > sample_size:
+                    break
+
+        print(f"total seen: {seen_count-1}")
+        print(f"total streamed: {cnt}")
+        # flush remaining
+        if not streaming and len(pkts) > 0:
+            pkts_write_csv(pkts, out_file)