rwaggbag(1)

NAME
rwaggbag - Build a binary Aggregate Bag from SiLK Flow records

SYNOPSIS
  rwaggbag --keys=KEY --counters=COUNTER
        [--note-strip] [--note-add=TEXT] [--note-file-add=FILE]
        [--invocation-strip] [--print-filenames] [--copy-input=PATH]
        [--compression-method=COMP_METHOD]
        [--ipv6-policy={ignore,asv4,mix,force,only}]
        [--output-path=PATH]
        [--site-config-file=FILENAME]
        {[--xargs] | [--xargs=FILENAME] | [FILE [FILE ...]]}

  rwaggbag --help

  rwaggbag --version

DESCRIPTION
rwaggbag reads SiLK Flow records and builds an Aggregate Bag file. To build an Aggregate Bag from textual input, use rwaggbagbuild(1).

An Aggregate Bag is a binary file that maps a key to a counter, where the key and the counter are both composed of one or more fields. For example, an Aggregate Bag could contain the sum of the packet count and the sum of the byte count for each unique source IP and source port pair.

For each SiLK flow record rwaggbag reads, it extracts the values of the fields listed in the --keys switch, combines those fields into a key, searches for an existing bin that has that key and creates a new bin for that key if none is found, and adds the values for each of the fields listed in the --counters switch to the bin's counter. Both the --keys and --counters switches are required.

rwaggbag reads SiLK Flow records from the files named on the command line or from the standard input when no file names are specified and --xargs is not present. To read the standard input in addition to the named files, use "-" or "stdin" as a file name. If an input file name ends in ".gz", the file is uncompressed as it is read. When the --xargs switch is provided, rwaggbag reads the names of the files to process from the named text file or from the standard input if no file name argument is provided to the switch. The input to --xargs must contain one file name per line.

If rwaggbag runs out of memory, it will exit immediately. The output Aggregate Bag file remains behind with a size of 0 bytes.

To print the contents of an Aggregate Bag as text, use rwaggbagcat(1). The rwaggbagbuild(1) tool can create an Aggregate Bag from textual input. rwaggbagtool(1) allows you to manipulate binary Aggregate Bag files.

OPTIONS
Option names may be abbreviated if the abbreviation is unique or is an exact match for an option. A parameter to an option may be specified as --arg=param or --arg param, though the first form is required for options that take optional parameters.

--keys=KEY
    Create a key for binning flow records using the values of the comma-separated field(s) listed in KEY. The field names are case-insensitive, a name may be abbreviated to its shortest unique prefix, and a name may only be used one time. The list of available KEY fields are

    sIPv4
        source IP address when IPv4

    sIPv6
        source IP address when IPv6

    dIPv4
        destination IP address when IPv4

    dIPv6
        destination IP address when IPv6

    sPort
        source port for TCP or UDP, or equivalent

    dPort
        destination port for TCP or UDP, or equivalent

    protocol
        IP protocol

    packets
        count of packets recorded for this flow record

    bytes
        count of bytes recorded for this flow record

    flags
        bit-wise OR of TCP flags over all packets in the flow

    sTime
        starting time of the flow, in seconds resolution

    duration
        duration of the flow, in seconds resolution

    eTime
        ending time of the flow, in seconds resolution

    sensor
        numeric ID of the sensor where the flow was collected

    input
        router SNMP input interface or vlanId if packing tools were configured to capture it (see sensor.conf(5))

    output
        router SNMP output interface or postVlanId

    nhIPv4
        router next hop IP address when IPv4

    nhIPv6
        router next hop IP address when IPv6

    initialFlags
        TCP flags on first packet in the flow as reported by yaf(1)

    sessionFlags
        bit-wise OR of TCP flags over all packets in the flow except the first as reported by yaf

    attributes
        flow attributes set by the flow generator

    application
        the content of the flow as reported in the applabel field of yaf

--counters=COUNTER
    Add to the bin determined by the fields in --key the values of the comma-separated field(s) listed in COUNTER. The field names are case-insensitive, a name may be abbreviated to its shortest unique prefix, and a name may only be used one time. The list of available COUNTER fields are

    records
        count of the number of flow records that match the key

    sum-packets
        the sum of the packet counts for flow records that match the key

    sum-bytes
        the sum of the byte counts for flow records that match the key

    sum-duration
        the sum of the durations (in seconds) for flow records that match the key

--note-strip
    Do not copy the notes (annotations) from the input file(s) to the output file. When this switch is not specified, notes from the input file(s) are copied to the output.

--note-add=TEXT
    Add the specified TEXT to the header of the output file as an annotation. This switch may be repeated to add multiple annotations to a file. To view the annotations, use the rwfileinfo(1) tool.

--note-file-add=FILENAME
    Open FILENAME and add the contents of that file to the header of the output file as an annotation. This switch may be repeated to add multiple annotations. Currently the application makes no effort to ensure that FILENAME contains text; be careful that you do not attempt to add a SiLK data file as an annotation.

--invocation-strip
    Do not record any command line history: do not copy the invocation history from the input files to the output file(s), and do not record the current command line invocation in the output. The invocation may be viewed with rwfileinfo(1).

--print-filenames
    Print to the standard error the names of input files as they are opened.

--copy-input=PATH
    Copy all binary SiLK Flow records read as input to the specified file or named pipe. PATH may be "stdout" or "-" to write flows to the standard output as long as the --output-path switch is specified to redirect rwaggbag's output to a different location.

--output-path=PATH
    Write the binary Aggregate Bag output to PATH, where PATH is a filename, a named pipe, the keyword "stderr" to write the output to the standard error, or the keyword "stdout" or "-" to write the output to the standard output. If PATH names an existing file, rwaggbag exits with an error unless the SILK_CLOBBER environment variable is set, in which case PATH is overwritten. If this switch is not given, the output is written to the standard output. Attempting to write the binary output to a terminal causes rwaggbag to exit with an error.

--ipv6-policy=POLICY
    Determine how IPv4 and IPv6 flows are handled when SiLK has been compiled with IPv6 support. When the switch is not provided, the SILK_IPV6_POLICY environment variable is checked for a policy. If it is also unset or contains an invalid policy, the POLICY is mix. When SiLK has not been compiled with IPv6 support, IPv6 flows are always ignored, regardless of the value passed to this switch or in the SILK_IPV6_POLICY variable. The supported values for POLICY are:

    ignore
        Ignore any flow record marked as IPv6, regardless of the IP addresses it contains. Only IP addresses contained in IPv4 flow records will be added to the Aggregate Bag.

    asv4
        Convert IPv6 flow records that contain addresses in the ::ffff:0:0/96 netblock (that is, IPv4-mapped IPv6 addresses) to IPv4 and ignore all other IPv6 flow records.

    mix Process the input as a mixture of IPv4 and IPv6 flow records. When creating a bag whose key is an IP address and the input contains IPv6 addresses outside of the ::ffff:0:0/96 netblock, this policy is equivalent to force; otherwise it is equivalent to asv4.

    force
        Convert IPv4 flow records to IPv6, mapping the IPv4 addresses into the ::ffff:0:0/96 netblock.

    only
        Process only flow records that are marked as IPv6. Only IP addresses contained in IPv6 flow records will be added to the Aggregate Bag.

--compression-method=COMP_METHOD
    Specify the compression library to use when writing output files. If this switch is not given, the value in the SILK_COMPRESSION_METHOD environment variable is used if the value names an available compression method. When no compression method is specified, output to the standard output or to named pipes is not compressed, and output to files is compressed using the default chosen when SiLK was compiled. The valid values for COMP_METHOD are determined by which external libraries were found when SiLK was compiled. To see the available compression methods and the default method, use the --help or --version switch. SiLK can support the following COMP_METHOD values when the required libraries are available.

    none
        Do not compress the output using an external library.

    zlib
        Use the zlib(3) library for compressing the output, and always compress the output regardless of the destination. Using zlib produces the smallest output files at the cost of speed.

    lzo1x
        Use the lzo1x algorithm from the LZO real time compression library for compression, and always compress the output regardless of the destination. This compression provides good compression with less memory and CPU overhead.

    snappy
        Use the snappy library for compression, and always compress the output regardless of the destination. This compression provides good compression with less memory and CPU overhead. Since SiLK 3.13.0.

    best
        Use lzo1x if available, otherwise use snappy if available, otherwise use zlib if available. Only compress the output when writing to a file.

--site-config-file=FILENAME
    Read the SiLK site configuration from the named file FILENAME. When this switch is not provided, rwaggbag searches for the site configuration file in the locations specified in the "FILES" section.

--xargs
--xargs=FILENAME
    Read the names of the input files from FILENAME or from the standard input if FILENAME is not provided. The input is expected to have one filename per line. rwaggbag opens each named file in turn and reads records from it as if the filenames had been listed on the command line.

--help
    Print the available options and exit.

--version
    Print the version number and information about how SiLK was configured, then exit the application.

EXAMPLES
In the following examples, the dollar sign ("$") represents the shell prompt. The text after the dollar sign represents the command line. Lines have been wrapped for improved readability, and the back slash ("\") is used to indicate a wrapped line.

To create an Aggregate Bag that sums the packet count for destination IPs addresses in the SiLK Flow file data.rw:

 $ rwaggbag --key=dipv6 --counter=sum-packets data.rw   \
   | rwaggbagcat

To sum the number of records, packet count, and byte count for all flow records

 $ rwaggbag --key=dport --counter=records,sum-packets,sum-bytes    \
        --output-path=dport.aggbag data.rw

To count the number of records seen for each unique source port, destination port, and protocol:

 $ rwaggbag --key=source,dport,proto --counter=records data.rw  \
   | rwaggbagcat

ENVIRONMENT

SILK_CLOBBER
    The SiLK tools normally refuse to overwrite existing files. Setting SILK_CLOBBER to a non-empty value removes this restriction.

SILK_COMPRESSION_METHOD
    This environment variable is used as the value for --compression-method when that switch is not provided.

SILK_CONFIG_FILE
    This environment variable is used as the value for the --site-config-file when that switch is not provided.

SILK_DATA_ROOTDIR
    This environment variable specifies the root directory of data repository. As described in the "FILES" section, rwaggbag may use this environment variable when searching for the SiLK site configuration file.

SILK_PATH
    This environment variable gives the root of the install tree. When searching for configuration files, rwaggbag may use this environment variable. See the "FILES" section for details.

FILES

${SILK_CONFIG_FILE}
${SILK_DATA_ROOTDIR}/silk.conf
/usr/share/silk/silk.conf
${SILK_PATH}/share/silk/silk.conf
${SILK_PATH}/share/silk.conf
/usr/share/silk/silk.conf
/usr/share/silk.conf
    Possible locations for the SiLK site configuration file which are checked when the --site-config-file switch is not provided.

NOTES
rwaggbag and the other Aggregate Bag tools were introduced in SiLK 3.15.0.

SEE ALSO
rwaggbagbuild(1), rwaggbagcat(1), rwaggbagtool(1), rwbag(1), rwfileinfo(1), rwfilter(1), rwnetmask(1), rwset(1), rwuniq(1), sensor.conf(5), silk(7), yaf(1), zlib(3)