[master] 4c5aba28f Add a SLT_Notice VSL tag

Dridi Boukelmoune dridi.boukelmoune at gmail.com
Fri Dec 20 11:21:07 UTC 2019

commit 4c5aba28fa9d8960384f32c5ebc273fc5693a67b
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Mon Nov 25 11:41:26 2019 +0100

    Add a SLT_Notice VSL tag
    This VSL tag will be used for informational messages related to
    exceptional handling of requests.

diff --git a/doc/sphinx/reference/vsl.rst b/doc/sphinx/reference/vsl.rst
index b314fd4d0..7ea7860e3 100644
--- a/doc/sphinx/reference/vsl.rst
+++ b/doc/sphinx/reference/vsl.rst
@@ -102,6 +102,17 @@ Error
 	Backend request failed to vcl_backend_error.
+Notice messages contain informational messages about the handling of a
+request. These can be exceptional circumstances encountered that causes
+deviation from the normal handling. The messages are prefixed with [core]
+for core Varnish generated messages, or with [<VMOD name>] for VMOD
+generated messages. The [core] messages are described in detail below, see
+the individual VMOD documentation for messages from VMODs.
diff --git a/include/tbl/vsl_tags.h b/include/tbl/vsl_tags.h
index ff1d979dc..7ff491b07 100644
--- a/include/tbl/vsl_tags.h
+++ b/include/tbl/vsl_tags.h
@@ -676,6 +676,13 @@ SLTM(VCL_use, 0, "VCL in use",
+SLTM(Notice, 0, "Informational messages about request handling",
+	"Informational log messages on events occured during request"
+	" handling. Lines are prefixed with either [core] or [<VMOD name>]."
+	" See the NOTICE MESSAGES section below or the individual VMOD manual"
+	" pages for detailed information of notice messages.\n"
 #undef SLTM

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