ipfixprobed: update ipfixprobed script to support new yaml configuration

format

Author: Pavel Siska

init/ipfixprobed

@@ -2,7 +2,8 @@
 
 CONFFILE="/etc/ipfixprobe/$1.conf"
 
-if [ -e "$CONFFILE" ]; then
+parse_old_format() {
+   # Parse the old format of the configuration file
    source "$CONFFILE"
    input=""
    dpdkinput=""
@@ -131,7 +132,26 @@ if [ -e "$CONFFILE" ]; then
    fi
 
    exec /usr/bin/ipfixprobe "${dpdkinput[@]}" $input $storage $process $output $telemetry $EXTRA_ARGS
+}
+
+if [ -e "$CONFFILE" ]; then
+   if grep -q 'INPUT\[' $CONFFILE; then
+      echo "WARNING: Legacy configuration format detected. This format is obsolete and will be removed in version 5.2."
+      echo "Please transition to the new YAML configuration format. For more details, visit: https://github.com/CESNET/ipfixprobe/blob/master/init/link0.conf.example"
+      parse_old_format
+   else
+      command=$(python3 config2args.py --config $CONFFILE)
+      status=$?
+
+      if [ $status -ne 0 ]; then
+         echo "Cannot convert yaml config" >&2
+         exit $status
+      fi
+      exec $command
+   fi
 else
    echo "Configuration file '$CONFFILE' does not exist, exitting." >&2
    exit 1
 fi
+
+exit 0

init/link0.conf.example

@@ -1,93 +1,100 @@
 # Input plugin configuration (input_plugin)
 input_plugin:
+  # IMPORTANT: Only one input plugin can be specified. Choose one of the following options:
+  # raw, pcap_file, pcap_live, ndp, dpdk_ring, or dpdk.
+
   raw:
-    interface: eth0  # Network interface name
-    blocks_count: 2048  # Number of blocks in the circular buffer (power of 2)
-    packets_in_block: 32  # Number of packets in each block (power of 2)
+    interface: eth0  # Network interface name to capture traffic from [required]
+    blocks_count: 2048  # Number of blocks in the circular buffer (must be a power of 2)
+    packets_in_block: 32  # Number of packets per block (must be a power of 2)
 
   pcap_file:
-    file: /path/to/pcap/file.pcap  # Path to the PCAP file
+    file: /path/to/pcap/file.pcap  # Path to the PCAP file to read from [required]
     bpf_filter: null  # Optional BPF filter (e.g., "port 80"), null = no filter
 
   pcap_live:
-    interface: eth0  # Network interface for live capture
-    bpf_filter: null  # BPF filter, null = no filter
+    interface: eth0  # Network interface for live packet capture [required]
+    bpf_filter: null  # Optional BPF filter (null = no filter)
     snap_length: 65535  # Maximum packet capture length
 
   ndp:
-    device: /dev/nfb0  # Device for packet capture
-    queues: "0-15"  # List of queues (e.g., "0,1,2-3,7")
+    device: /dev/nfb0  # Device for packet capture (e.g., /dev/nfb0) [required]
+    queues: "0-15"  # List of queue IDs (e.g., "0,1,2-3,7") [required]
 
   dpdk_ring:
-    ring_name: ring0  # Name of the shared DPDK ring buffer
-    eal_opts: null  # EAL options (null = default)
-    burst_size: 64  # Number of packets processed in each cycle
+    ring_name: ring0  # Name of the shared DPDK ring buffer [required]
+    eal_opts: null  # EAL options (null = default options)
+    burst_size: 64  # Number of packets processed in each burst (cycle)
 
   dpdk:
-    allowed_nics: "0000:00:00.0,0000:00:00.1"  # List of allowed NICs (PCI addresses)
-    burst_size: 64  # Number of packets processed in each cycle
-    mempool_size: 8192  # Size of the memory pool (power of 2)
-    rx_queues: 1  # Number of RX queues
-    eal_opts: null  # EAL options (null = default)
+    allowed_nics: "0000:00:00.0,0000:00:00.1" # List of allowed NICs (PCI addresses) [required]
+    burst_size: 64  # Number of packets processed in each burst (cycle)
+    mempool_size: 8192  # Size of the memory pool (must be a power of 2)
+    rx_queues: 1  # Number of RX (receive) queues
+    eal_opts: null  # EAL options (null = default options)
     mtu: null  # Maximum Transmission Unit (defaults to RTE_ETHER_MAX_LEN)
 
 # Storage configuration (storage)
 storage:
   cache:
-    size_exponent: 20  # Cache size as a power of 2 (2^20)
-    line_size_exponent: 4  # Cache line size as a power of 2 (2^4)
+    size_exponent: 20  # Cache size as a power of 2 (e.g., 2^20)
+    line_size_exponent: 4  # Cache line size as a power of 2 (e.g., 2^4)
   timeouts:
-    active: 65  # Active timeout (in seconds)
-    inactive: 300  # Inactive timeout (in seconds)
-  split_biflow: true  # Split biflow into uniflow (true/false)
+    active: 65  # Active timeout duration (in seconds)
+    inactive: 300  # Inactive timeout duration (in seconds)
+  split_biflow: true  # Whether to split biflow into uniflow (true/false)
 
   fragmentation_cache:
     enabled: true  # Enable fragmentation cache (true/false)
     size: 10007  # Fragmentation cache size (minimum 1)
-    timeout: 3  # Timeout for fragments in cache (in seconds)
+    timeout: 3  # Timeout for fragments in the cache (in seconds)
 
 # List of active process plugins (process_plugins)
 process_plugins:
-  - http
-  - dns
-  - quic
-  - tls
-
+  - http  # HTTP protocol plugin
+  - dns   # DNS protocol plugin
+  - quic  # QUIC protocol plugin
+  - tls   # TLS protocol plugin
+  # ...
 
 # Output plugin configuration (output_plugin)
 output_plugin:
+  # IMPORTANT: Only one output plugin can be specified. Choose one of the following options:
+  # ipfix, unirec, or text.
+
   ipfix:
     collector:
-      host: localhost  # IPFIX collector address
-      port: 4739  # Collector port
+      host: localhost  # IPFIX collector address [required]
+      port: 4739  # IPFIX collector port [required]
     mtu: 1458  # Maximum size of IPFIX packets
     exporter:
-      id: 0  # Exporter ID
-      dir: 0  # Direction bit field value
+      id: 0  # Exporter ID for IPFIX [required]
+      dir: 0  # Direction bit field value (0 = incoming, 1 = outgoing)
 
     protocol:
+      # IMPORTANT: Only one protocol can be selected: udp or tcp.
       udp:
-        template_refresh: 60  # Template refresh rate (for UDP only)
+        template_refresh: 60  # Template refresh rate for UDP protocol (in seconds)
       tcp:
-        non_blocking: false  # Use non-blocking TCP socket
+        non_blocking: false  # Whether to use non-blocking TCP sockets (true/false)
 
     compression:
       lz4:
-        enabled: true  # Enable LZ4 compression
-        buffer_size: 4500  # Buffer size for LZ4 (default: mtu * 3)
+        enabled: true  # Enable LZ4 compression for IPFIX (true/false)
+        buffer_size: 4500  # Buffer size for LZ4 compression (default: mtu * 3)
 
   text:
-    file: /path/to/output/file.txt  # Path to output file (null = stdout)
+    file: /path/to/output/file.txt  # Path to output file (use null for stdout)
 
 # Telemetry settings (telemetry)
 telemetry:
   appfs:
-    enabled: true  # Enable AppFS telemetry
-    mount_point: /var/run/ipfixprobe/  # Mount point path
+    enabled: true  # Enable AppFS telemetry (true/false)
+    mount_point: /var/run/ipfixprobe/  # Mount point for telemetry data storage
 
 # General configuration (general)
 general:
   queues_size:
-    input: 64  # Size of the input queue
-    output: 16536  # Size of the output queue
-  cpu_mask: 0x1  # CPU mask for processes
+    input: 64  # Size of the input packet queue [required]
+    output: 16536  # Size of the output packet queue [required]
+  cpu_mask: 0x1  # CPU mask for process binding (use hexadecimal format)