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diff --git a/src/vnet/syslog/sylog_doc.md b/src/vnet/syslog/sylog_doc.md deleted file mode 100644 index 0b48d4db573..00000000000 --- a/src/vnet/syslog/sylog_doc.md +++ /dev/null @@ -1,65 +0,0 @@ -# Syslog protocol support {#syslog_doc} - -VPP provides [RFC5424](https://tools.ietf.org/html/rfc5424) syslog protocol -logging, which is used to transport event messages across network. VPP -currently suports UDP transport based on -[RFC5426](https://tools.ietf.org/html/rfc5426). - -The syslog message has the following format: -* header -* structured data -* free-form message - -The header contains, priority, version, timestamp, hostname, application, -process id and message id. It is followed by structured data, which provides -a mechanism to express event data in easily parsable format. Structured data -can contain zero, one or multiple structured data elements. Structured data -element contains name-value pairs. Structured data can by followed by free-form -message. - -Following example explains how to use the internal APIs to genrate syslog -message: -```{.c} - #include <vnet/syslog/syslog.h> - - ... - - syslog_msg_t syslog_msg; - - /* Check if syslog logging is enabled */ - if (!syslog_is_enabled ()) - return; - - /* Severity filer test */ - if (syslog_severity_filter_block (severity)) - return; - - /* Initialize syslog message header */ - syslog_msg_init (&syslog_msg, facility, severity, "NAT", "SADD"); - - /* Create structured data element */ - syslog_msg_sd_init (&syslog_msg, "nsess"); - /* Add structured data element parameters (name-value pairs) */ - syslog_msg_add_sd_param (&syslog_msg, "SSUBIX", "%d", ssubix); - syslog_msg_add_sd_param (&syslog_msg, "SVLAN", "%d", svlan); - syslog_msg_add_sd_param (&syslog_msg, "IATYP", "IPv4"); - syslog_msg_add_sd_param (&syslog_msg, "ISADDR", "%U", - format_ip4_address, isaddr); - syslog_msg_add_sd_param (&syslog_msg, "ISPORT", "%d", isport); - syslog_msg_add_sd_param (&syslog_msg, "XATYP", "IPv4"); - syslog_msg_add_sd_param (&syslog_msg, "XSADDR", "%U", - format_ip4_address, xsaddr); - syslog_msg_add_sd_param (&syslog_msg, "XSPORT", "%d", xsport); - syslog_msg_add_sd_param (&syslog_msg, "PROTO", "%d", proto); - - /* Send syslog message */ - syslog_msg_send (&syslog_msg); -``` - -Example above produces following syslog message: - <134>1 2018-11-12T11:25:30.252715Z 172.16.4.1 NAT 5901 SADD [nsess SSUBIX="0" SVLAN="0" IATYP="IPv4" ISADDR="172.16.1.2" ISPORT="6303" XATYP="IPv4" XSADDR="10.0.0.3" XSPORT="16253" PROTO="6"] - -To add free-form message use: -```{.c} - syslog_msg_add_msg (&syslog_msg, "event log entry"); -``` |