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https://github.com/benagricola/lua-resty-fastcgi
Lua FCGI client driver for ngx_lua based on the cosocket API.
https://github.com/benagricola/lua-resty-fastcgi
Last synced: 7 days ago
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Lua FCGI client driver for ngx_lua based on the cosocket API.
- Host: GitHub
- URL: https://github.com/benagricola/lua-resty-fastcgi
- Owner: benagricola
- Created: 2014-01-26T19:29:32.000Z (almost 11 years ago)
- Default Branch: master
- Last Pushed: 2017-09-28T12:34:53.000Z (about 7 years ago)
- Last Synced: 2024-02-14T18:32:50.527Z (9 months ago)
- Language: Lua
- Homepage:
- Size: 53.7 KB
- Stars: 21
- Watchers: 4
- Forks: 3
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-resty - lua-resty-fastcgi
- awesome-nginx - lua-resty-fastcgi - Lua FCGI client driver for ngx_lua based on the cosocket API. (Rust Modules / Lua Modules)
README
# lua-resty-fcgi
Lua FastCGI client driver for ngx_lua based on the cosocket API.
# Table of Contents
* [Status](#status)
* [Overview](#overview)
* [fastcgi](#fastcgi)
* [new](#new)
* [connect](#connect)
* [request_simple](#request_simple)
* [request](#request)
# Status
Experimental, API may change without warning.
Requires ngx_lua > 0.9.5
# Overview
Require the resty.fastcgi module in init_by_lua.
Create an instance of the `fastcgi` class in your content_by_lua.
Call the `connect` method with a socket path or hostname:port combination to connect.
Use the `request_simple` method to make a basic FastCGI request which returns a result object containing http body and headers, or nil, err.
```lua
init_by_lua '
fcgi = require("resty.fastcgi")
';
server {
root /var/www;
location / {
content_by_lua '
local fcgic = fcgi.new()
fcgic:set_timeout(2000)
fcgic:connect("127.0.0.1",9000)
ngx.req.read_body()
fcgic:set_timeout(60000)
local res, err = fcgic:request_simple({
fastcgi_params = {
DOCUMENT_ROOT = ngx.var.document_root,
SCRIPT_FILENAME = ngx.var.document_root .. "/index.php",
SCRIPT_NAME = "/",
REQUEST_METHOD = ngx.var.request_method,
CONTENT_TYPE = ngx.var.content_type,
CONTENT_LENGTH = ngx.var.content_length,
REQUEST_URI = ngx.var.request_uri,
QUERY_STRING = ngx.var.args,
SERVER_PROTOCOL = ngx.var.server_protocol,
GATEWAY_INTERFACE = "CGI/1.1",
SERVER_SOFTWARE = "lua-resty-fastcgi",
REMOTE_ADDR = ngx.var.remote_addr,
REMOTE_PORT = ngx.var.remote_port,
SERVER_ADDR = ngx.var.server_addr,
SERVER_PORT = ngx.var.server_port,
SERVER_NAME = ngx.var.server_name
},
headers = ngx.req.get_headers(),
body = ngx.req.get_body_data(),
})
if not res then
ngx.status = 500
ngx.log(ngx.ERR,"Error making FCGI request: ",err)
ngx.exit(500)
else
for k,v in pairs(res.headers) do
ngx.header[k] = v
end
ngx.status = res.status
ngx.say(res.body)
end
fcgic:close()
';
}
}
```
# fastcgi
### new
`syntax: fcgi_client = fcgi.new()`
Returns a new fastcgi object.
### connect
`syntax: ok, err = fcgi_client:connect(host or sockpath[,port])`
Attempts to connect to the FastCGI server details given.
```lua
fcgi_class = require('resty.fastcgi')
local fcgi_client = fcgi_class.new()
local ok, err = fcgi_client:connect("127.0.0.1",9000)
if not ok then
ngx.log(ngx.ERR, err)
ngx.status = 500
return ngx.exit(ngx.status)
end
ngx.log(ngx.info, 'Connected to ' .. err.host.host .. ':' .. err.host.port)
```
### request_simple
`syntax: res, err = fcgi_client:request_simple({params...})`
Makes a FCGI request to the connected socket using the details given in params.
Returns a result object containing HTTP body and headers. Internally this uses the streaming API.
e.g.
```lua
local params = {
fastcgi_params = {
DOCUMENT_ROOT = ngx.var.document_root,
SCRIPT_FILENAME = ngx.var.document_root .. "/index.php",
SCRIPT_NAME = "/",
REQUEST_METHOD = ngx.var.request_method,
CONTENT_TYPE = ngx.var.content_type,
CONTENT_LENGTH = ngx.var.content_length,
REQUEST_URI = ngx.var.request_uri,
QUERY_STRING = ngx.var.args,
SERVER_PROTOCOL = ngx.var.server_protocol,
GATEWAY_INTERFACE = "CGI/1.1",
SERVER_SOFTWARE = "lua-resty-fastcgi",
REMOTE_ADDR = ngx.var.remote_addr,
REMOTE_PORT = ngx.var.remote_port,
SERVER_ADDR = ngx.var.server_addr,
SERVER_PORT = ngx.var.server_port,
SERVER_NAME = ngx.var.server_name
},
headers = ngx.req.get_headers(),
body = ngx.req.get_body_data(),
}
res, err = fcgi_client:request_simple(params)
if not res then
ngx.log(ngx.ERR, err)
ngx.status = 500
return ngx.exit(ngx.status)
end
local res_headers = res.headers
local res_body = res.body
```
### request
`syntax: res, err = fcgi_client:request({params...})`
Makes a FCGI request to the connected socket using the details given in params.
Returns number of bytes written to socket or nil, err. This method is intended to be used with the response streaming functions.
e.g.
```lua
local params = {
fastcgi_params = {
DOCUMENT_ROOT = ngx.var.document_root,
SCRIPT_FILENAME = ngx.var.document_root .. "/index.php",
SCRIPT_NAME = "/",
REQUEST_METHOD = ngx.var.request_method,
CONTENT_TYPE = ngx.var.content_type,
CONTENT_LENGTH = ngx.var.content_length,
REQUEST_URI = ngx.var.request_uri,
QUERY_STRING = ngx.var.args,
SERVER_PROTOCOL = ngx.var.server_protocol,
GATEWAY_INTERFACE = "CGI/1.1",
SERVER_SOFTWARE = "lua-resty-fastcgi",
REMOTE_ADDR = ngx.var.remote_addr,
REMOTE_PORT = ngx.var.remote_port,
SERVER_ADDR = ngx.var.server_addr,
SERVER_PORT = ngx.var.server_port,
SERVER_NAME = ngx.var.server_name
},
headers = ngx.req.get_headers(),
body = ngx.req.get_body_data(),
}
res, err = fcgi_client:request(params)
if not res then
ngx.log(ngx.ERR, err)
ngx.status = 500
return ngx.exit(ngx.status)
end
local body_reader = fcgic:get_response_reader()
local chunk, err
repeat
chunk, err = body_reader(32768)
if err then
return nil, err, tbl_concat(chunks)
end
if chunk then
-- Parse stdout here for e.g. HTTP headers
ngx.print(chunk.stdout)
end
until not chunk
```
## TODO
* Streaming request support
* Better testing, including testing streaming functionality