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Posted to commits@trafficserver.apache.org by jp...@apache.org on 2012/05/11 06:01:16 UTC
[1/32] git commit: Add Lua example
Updated Branches:
refs/heads/jpeach/lua [created] c2e9b63f7
Add Lua example
Project: http://git-wip-us.apache.org/repos/asf/trafficserver/repo
Commit: http://git-wip-us.apache.org/repos/asf/trafficserver/commit/c2e9b63f
Tree: http://git-wip-us.apache.org/repos/asf/trafficserver/tree/c2e9b63f
Diff: http://git-wip-us.apache.org/repos/asf/trafficserver/diff/c2e9b63f
Branch: refs/heads/jpeach/lua
Commit: c2e9b63f7de4fdf7001477bbb651c5ce3d752173
Parents: 6cf9235
Author: James Peach <jp...@apache.org>
Authored: Thu May 10 20:55:29 2012 -0700
Committer: James Peach <jp...@apache.org>
Committed: Thu May 10 21:00:31 2012 -0700
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plugins/lua/example.lua | 63 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
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http://git-wip-us.apache.org/repos/asf/trafficserver/blob/c2e9b63f/plugins/lua/example.lua
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diff --git a/plugins/lua/example.lua b/plugins/lua/example.lua
new file mode 100644
index 0000000..a57c601
--- /dev/null
+++ b/plugins/lua/example.lua
@@ -0,0 +1,63 @@
+-- Example Lua remap plugin. Load this with the following remap.comfig line:
+--
+-- map http://test.foo.com http://foo.foo.com @plugin=lua.so @pparam=/path/to/example.lua
+
+-- Pull in the Traffic Server API.
+local TS = require 'ts'
+
+require 'string'
+require 'math'
+
+-- Compulsory remap hook. We are given a request object that we can modify if necessary.
+function remap(request)
+ -- Get a copy of the current URL.
+ url = request:url()
+
+ TS.debug('example', string.format('remapping %s://%s', url.scheme, url.host))
+
+ -- Do some header manipulation, just to mess with the origin.
+ request.headers['added-bool'] = true
+ request.headers['added-int'] = 1
+ request.headers['added-string'] = 'ttt'
+ request.headers['added-table'] = {}
+ request.headers['deleted'] = nil
+
+ -- We can also print to stdout using Lua standard library.
+ print(string.format('request URL is %s://%s:%d/%s',
+ url.scheme, url.host, url.port, url.path and url.path or ''))
+
+ -- Modify components of the URL ... everybody loves slashdot.
+ url.host = 'www.slashdot.org'
+ url.port = 80
+ url.method = 'POST'
+
+ -- Plugin chain evaluation rules:
+ -- redirect: plugin chain terminates
+ -- reject: plugin chain terminates
+ -- rewrite: plugin chain continues
+
+ chance = math.random(4)
+ if chance == 1 then
+ -- Send a 301 redirect to the new URL.
+ request:redirect(url)
+ elseif chance == 2 then
+ -- Reject the request with an optional message.
+ request:reject(400, "Denied")
+ elseif chance == 3 then
+ -- Reject the request with a response body. We sniff the body to set the content type.
+ request:reject(500, [[
+ <HEAD></TITLE></HEAD>
+ <BODY>Internal error, sorry</BODY>
+ ]])
+ else
+ -- Rewrite the request URL. The remap plugin chain continues and other plugins
+ request:rewrite(url)
+ end
+
+end
+
+-- Optional module initialization hook.
+function init()
+ TS.debug("example", string.format('init called by Traffic Server %s', TS.VERSION));
+ return true
+end