diff options
| author | chai <chaifix@163.com> | 2021-11-15 11:54:17 +0800 |
|---|---|---|
| committer | chai <chaifix@163.com> | 2021-11-15 11:54:17 +0800 |
| commit | 30f2f46474bf4eda5f10d4c64a07cde01d469f66 (patch) | |
| tree | 6ff2ed3262037b3c9bae2d2b9059a1d65773f31c /Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua | |
| parent | 4c36bed53fe63ae6056730b3ecad2573f03d88f8 (diff) | |
*rename DefaultContent -> BuiltIn
Diffstat (limited to 'Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua')
| -rw-r--r-- | Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua b/Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua new file mode 100644 index 0000000..e01f1f8 --- /dev/null +++ b/Data/BuiltIn/Libraries/json4lua/json/rpcserver.lua @@ -0,0 +1,78 @@ +-----------------------------------------------------------------------------
+-- JSONRPC4Lua: JSON RPC server for exposing Lua objects as JSON RPC callable
+-- objects via http.
+-- json.rpcserver Module.
+-- Author: Craig Mason-Jones
+-- Homepage: http://github.com/craigmj/json4lua/
+-- Version: 1.0.0
+-- This module is released under the MIT License (MIT).
+-- Please see LICENCE.txt for details.
+--
+-- USAGE:
+-- This module exposes one function:
+-- server(luaClass, packReturn)
+-- Manages incoming JSON RPC request forwarding the method call to the given
+-- object. If packReturn is true, multiple return values are packed into an
+-- array on return.
+--
+-- IMPORTANT NOTES:
+-- 1. This version ought really not be 0.9.10, since this particular part of the
+-- JSONRPC4Lua package is very first-draft. However, the JSON4Lua package with which
+-- it comes is quite solid, so there you have it :-)
+-- 2. This has only been tested with Xavante webserver, with which it works
+-- if you patch CGILua to accept 'text/plain' content type. See doc\cgilua_patch.html
+-- for details.
+----------------------------------------------------------------------------
+
+module ('json.rpcserver')
+
+---
+-- Implements a JSON RPC Server wrapping for luaClass, exposing each of luaClass's
+-- methods as JSON RPC callable methods.
+-- @param luaClass The JSON RPC class to expose.
+-- @param packReturn If true, the server will automatically wrap any
+-- multiple-value returns into an array. Single returns remain single returns. If
+-- false, when a function returns multiple values, only the first of these values will
+-- be returned.
+--
+function serve(luaClass, packReturn)
+ cgilua.contentheader('text','plain')
+ require('cgilua')
+ require ('json')
+ local postData = ""
+
+ if not cgilua.servervariable('CONTENT_LENGTH') then
+ cgilua.put("Please access JSON Request using HTTP POST Request")
+ return 0
+ else
+ postData = cgi[1] -- SAPI.Request.getpostdata() --[[{ "id":1, "method":"echo","params":["Hi there"]}]] --
+ end
+ -- @TODO Catch an error condition on decoding the data
+ local jsonRequest = json.decode(postData)
+ local jsonResponse = {}
+ jsonResponse.id = jsonRequest.id
+ local method = luaClass[ jsonRequest.method ]
+
+ if not method then
+ jsonResponse.error = 'Method ' .. jsonRequest.method .. ' does not exist at this server.'
+ else
+ local callResult = { pcall( method, unpack( jsonRequest.params ) ) }
+ if callResult[1] then -- Function call successfull
+ table.remove(callResult,1)
+ if packReturn and table.getn(callResult)>1 then
+ jsonResponse.result = callResult
+ else
+ jsonResponse.result = unpack(callResult) -- NB: Does not support multiple argument returns
+ end
+ else
+ jsonResponse.error = callResult[2]
+ end
+ end
+
+ -- Output the result
+ -- TODO: How to be sure that the result and error tags are there even when they are nil in Lua?
+ -- Can force them by hand... ?
+ cgilua.contentheader('text','plain')
+ cgilua.put( json.encode( jsonResponse ) )
+end
+
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