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Diffstat (limited to 'doc/vmod-dbrw.3')
| -rw-r--r-- | doc/vmod-dbrw.3 | 105 |
1 files changed, 5 insertions, 100 deletions
diff --git a/doc/vmod-dbrw.3 b/doc/vmod-dbrw.3 index 8c89cc4..139fbab 100644 --- a/doc/vmod-dbrw.3 +++ b/doc/vmod-dbrw.3 @@ -1,5 +1,5 @@ .\" This file is part of Vmod-dbrw -*- nroff -*- -.\" Copyright (C) 2013-2014 Sergey Poznyakoff +.\" Copyright (C) 2013-2017 Sergey Poznyakoff .\" .\" Vmod-dbrw is free software; you can redistribute it and/or modify .\" it under the terms of the GNU General Public License as published by @@ -13,7 +13,7 @@ .\" .\" You should have received a copy of the GNU General Public License .\" along with vmod-dbrw. If not, see <http://www.gnu.org/licenses/>. -.TH VMOD-DBRW 1 "April 21, 2016" "VMOD-DBRW" "User Reference" +.TH VMOD-DBRW 1 "August 5, 2017" "VMOD-DBRW" "User Reference" .SH NAME vmod-dbrw \- Database-driven rewrite rules for Varnish Cache .SH SYNOPSIS @@ -188,7 +188,7 @@ CREATE TABLE redirects ( ); .EE .PP -VCL 3.0 code: +The VCL code: .PP .EX sub vcl_recv { @@ -201,38 +201,6 @@ sub vcl_recv { dbrw.rewrite("host=" + req.http.Host + ";" + "url=" + req.url); if (req.http.X-Redirect-To != "") { - error(750, "Redirect"); - } -} - -sub vcl_error { - if (obj.status == 750) { - set obj.http.Location = req.http.X-Redirect-To; - set obj.status = 301; - return (deliver); - } -} -.EE -.PP -Notice the use of concatenation to build the argument to -\fBdbrw.rewrite\fR. -.PP -The following is the same code for VCL 4.0: -.PP -.EX -sub vcl_init { - dbrw.config("mysql", "database=dbname;user=varnish", - {"SELECT dest - FROM redirects - WHERE host='$host' - AND url='$url'"}); -} - -sub vcl_recv { - set req.http.X-Redirect-To = - dbrw.rewrite("host=" + req.http.Host + ";" + - "url=" + req.url); - if (req.http.X-Redirect-To != "") { return(synth(301, "Redirect")); } } @@ -260,50 +228,15 @@ CREATE TABLE rewrite ( ) .EE .PP -VCL 3.0 code: +The VCL: .PP .EX -import std; -import dbrw; - -sub vcl_init { +sub vcl_recv { # It is supposed that the url column contains an SQL-style # wildcard pattern. dbrw.config("mysql", "database=varnish;user=varnish;debug=10", {"SELECT dest,pattern,value,flags FROM rewrite WHERE host='$host' and '$url' like url"}); -} - -sub vcl_recv { - set req.http.X-Redirect-To = - dbrw.rewrite("host=" + req.http.Host + ";" + - "url=" + req.url); - if (req.http.X-Redirect-To != "") { - error(750, "Redirect"); - } -} -.EE -.PP -The \fBvcl_error\fR function uses the \fBX\-VMOD\-DBRW\-Status\fR -header, which may be set by \fBredirect=\fR flag in the -\fBflags\fR column. Its value is converted to integer using the -\fBinteger\fR function from the \fBstd\fR module. If the header is -not set, permanent redirect is assumed: -.PP -.EX -sub vcl_error { - if (obj.status == 750) { - set obj.http.Location = req.http.X-Redirect-To; - set obj.status = std.integer(req.http.X-VMOD-DBRW-Status, 301); - return (deliver); - } -} -.EE -.PP -For VCL 4.0, \fBvcl_synth\fR is used instead of \fBvcl_error\fR: -.PP -.EX -sub vcl_recv { set req.http.X-Redirect-To = dbrw.rewrite("host=" + req.http.Host + ";" + "url=" + req.url); @@ -320,34 +253,6 @@ sub vcl_synth { } } .EE -.SS Use of vmod-dbrw and vmod-redirect -.PP -.ie "\*[.T]"html" \{\ -For VCL 3.0 you can use the -.URL https://www.varnish-cache.org/vmod/redirect \fBvmod-redirect\fR " module" -\} -.el \{\ -For VCL 3.0 you can use the \fBvmod-redirect\fR module -.BR ( https://www.varnish-cache.org/vmod/redirect ) -\} -and get rid of the \fBvcl_error\fR subroutine: -.PP -.EX -import std; -import dbrw; -import redirect; - -sub vcl_recv { - set req.http.X-Redirect-To = - dbrw.rewrite("host=" + req.http.Host + ";" + - "url=" + req.url); - if (req.http.X-Redirect-To != "") { - error(redirect.location( - std.integer(req.http.X-VMOD-DBRW-Status, 301), - req.http.X-Redirect-To), "Redirection"); - } -} -.EE .\" The MANCGI variable is set by man.cgi script on Ulysses. .\" The download.inc file contains the default DOWNLOAD section .\" for man-based doc pages. |