Nginx output filter module to convert Resty-DBD-Streams (RDS) to Comma-Separated Values (CSV)
ngx_rds_csv - Nginx output filter module to convert Resty-DBD-Streams
(RDS) to Comma-Separated Values (CSV)
This module is considered production ready.
location /foo {
# drizzle_pass/postgres_pass/...
rds_csv on;
rds_csv_row_terminator "\n"; # default to "\r\n"
}
This module implements an efficient output filter that converts
Resty-DBD-Streams (RDS) generated by ngx_drizzle
and ngx_postgres
to Comma-Separated Values (CSV) format in a streaming fashion.
By default, the CSV format is in compliance with RFC 4180:
http://tools.ietf.org/html/rfc4180
SQL NULL values will be converted to empty field value, just like
empty string values.
syntax: rds_csv on|off
default: rds_csv off
context: http, server, location, location if
Enables this output filter when on and disables otherwise.
syntax: rds_csv_row_terminator <str>
default: rds_csv_row_terminator “\r\n”
context: http, server, location, location if
Specifies the row terminator used by the CSV format.
Only "\r\n" and "\n" are allowed.
Defaults to "\r\n", i.e., CR LF, according to RFC 4180.
syntax: rds_csv_field_separator <char>
default: rds_csv_field_separator “,”
context: http, server, location, location if
Specifies the field seperator used by the CSV format.
Only ",", ";", and "\t" are allowed.
Defaults to "," according to RFC 4180.
syntax: rds_csv_field_name_header on|off
default: rds_csv_field_name_header off
context: http, server, location, location if
Emits the first line of field names when this directive is set on,
and none otherwise.
syntax: rds_csv_content_type <str>
default: rds_csv_content_type “text/csv; header=<present|absence>”
context: http, server, location, location if
Specifies the Content-Type response header generated by this module.
Defaults to "text/csv; header=present" or "text/csv; header=absence",
depending on whether rds_csv_field_name_header is on or off.
syntax: rds_csv_buffer_size <size>
default: rds_csv_buffer_size 4k/8k
context: http, server, location, location if
The lager this buffer size setting, the less streammy the output
will be.
You’re recommended to install this module (as well as the Nginx core and many other goodies) via the ngx_openresty bundle. See the detailed instructions for downloading and installing ngx_openresty into your system. This is the easiest and most safe way to set things up.
Alternatively, you can install this module manually with the Nginx source:
Grab the nginx source code from nginx.org, for example,
the version 1.13.6 (see nginx compatibility), and then build the source with this module:
$ wget 'http://nginx.org/download/nginx-1.13.6.tar.gz'
$ tar -xzvf nginx-1.13.6.tar.gz
$ cd nginx-1.13.6/
# Here we assume you would install you nginx under /opt/nginx/.
$ ./configure --prefix=/opt/nginx \
--add-module=/path/to/rds-csv-nginx-module
$ make -j2
$ make install
Download the latest version of the release tarball of this module from rds-csv-nginx-module file list.
Also, this module is included and enabled by default in the ngx_openresty bundle.
This module is compatible with the following versions of Nginx:
Yichun “agentzh” Zhang <[email protected]>, OpenResty Inc.
This module is licenced under the BSD license.
Copyright © 2011-2018, Yichun “agentzh” Zhang (章亦春) <[email protected]>, OpenResty Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
“AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.