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feat: add http-dubbo plugin (#10703)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,262 @@ | ||
| -- | ||
| -- Licensed to the Apache Software Foundation (ASF) under one or more | ||
| -- contributor license agreements. See the NOTICE file distributed with | ||
| -- this work for additional information regarding copyright ownership. | ||
| -- The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| -- (the "License"); you may not use this file except in compliance with | ||
| -- the License. You may obtain a copy of the License at | ||
| -- | ||
| -- http://www.apache.org/licenses/LICENSE-2.0 | ||
| -- | ||
| -- Unless required by applicable law or agreed to in writing, software | ||
| -- distributed under the License is distributed on an "AS IS" BASIS, | ||
| -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| -- See the License for the specific language governing permissions and | ||
| -- limitations under the License. | ||
| -- | ||
|
|
||
| local require = require | ||
| local core = require("apisix.core") | ||
| local pairs = pairs | ||
| local str_format = string.format | ||
| local bit = require("bit") | ||
| local rshift = bit.rshift | ||
| local band = bit.band | ||
| local char = string.char | ||
| local tostring = tostring | ||
| local ngx = ngx | ||
| local type = type | ||
| local plugin_name = "http-dubbo" | ||
|
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|
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| local schema = { | ||
| type = "object", | ||
| properties = { | ||
| service_name = { | ||
| type = "string", | ||
| minLength = 1, | ||
| }, | ||
| service_version = { | ||
| type = "string", | ||
| pattern = [[^\d+\.\d+\.\d+]], | ||
| default ="0.0.0" | ||
| }, | ||
| method = { | ||
| type = "string", | ||
| minLength = 1, | ||
| }, | ||
| params_type_desc = { | ||
| type = "string", | ||
| default = "" | ||
| }, | ||
| serialization_header_key = { | ||
| type = "string" | ||
| }, | ||
| serialized = { | ||
| type = "boolean", | ||
| default = false | ||
| }, | ||
| connect_timeout={ | ||
| type = "number", | ||
| default = 6000 | ||
| }, | ||
| read_timeout={ | ||
| type = "number", | ||
| default = 6000 | ||
| }, | ||
| send_timeout={ | ||
| type = "number", | ||
| default = 6000 | ||
| } | ||
| }, | ||
| required = { "service_name", "method" }, | ||
| } | ||
|
|
||
| local _M = { | ||
| version = 0.1, | ||
| priority = 504, | ||
| name = plugin_name, | ||
| schema = schema, | ||
| } | ||
|
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| function _M.check_schema(conf) | ||
| return core.schema.check(schema, conf) | ||
| end | ||
|
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|
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| local function str_int32(int) | ||
| return char(band(rshift(int, 24), 0xff), | ||
| band(rshift(int, 16), 0xff), | ||
| band(rshift(int, 8), 0xff), | ||
| band(int, 0xff)) | ||
| end | ||
|
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|
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| local function parse_dubbo_header(header) | ||
| for i = 1, 16 do | ||
| local currentByte = header:byte(i) | ||
| if not currentByte then | ||
| return nil | ||
| end | ||
| end | ||
|
|
||
| local magic_number = str_format("%04x", header:byte(1) * 256 + header:byte(2)) | ||
| local message_flag = header:byte(3) | ||
| local status = header:byte(4) | ||
| local request_id = 0 | ||
| for i = 5, 12 do | ||
| request_id = request_id * 256 + header:byte(i) | ||
| end | ||
|
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||
| local byte13Val = header:byte(13) * 256 * 256 * 256 | ||
| local byte14Val = header:byte(14) * 256 * 256 | ||
| local data_length = byte13Val + byte14Val + header:byte(15) * 256 + header:byte(16) | ||
|
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||
| local is_request = bit.band(bit.rshift(message_flag, 7), 0x01) == 1 and 1 or 0 | ||
| local is_two_way = bit.band(bit.rshift(message_flag, 6), 0x01) == 1 and 1 or 0 | ||
| local is_event = bit.band(bit.rshift(message_flag, 5), 0x01) == 1 and 1 or 0 | ||
|
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||
| return { | ||
| magic_number = magic_number, | ||
| message_flag = message_flag, | ||
| is_request = is_request, | ||
| is_two_way = is_two_way, | ||
| is_event = is_event, | ||
| status = status, | ||
| request_id = request_id, | ||
| data_length = data_length | ||
| } | ||
| end | ||
|
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|
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| local function string_to_json_string(str) | ||
| local result = "\"" | ||
| for i = 1, #str do | ||
| local byte = core.string.sub(str, i, i) | ||
| if byte == "\\" then | ||
| result = result .. "\\\\" | ||
| elseif byte == "\n" then | ||
| result = result .. "\\n" | ||
| elseif byte == "\t" then | ||
| result = result .. "\\t" | ||
| elseif byte == "\r" then | ||
| result = result .. "\\r" | ||
| elseif byte == "\b" then | ||
| result = result .. "\\b" | ||
| elseif byte == "\f" then | ||
| result = result .. "\\f" | ||
| elseif byte == "\"" then | ||
| result = result .. "\\\"" | ||
| else | ||
| result = result .. byte | ||
| end | ||
| end | ||
| return result .. "\"" | ||
| end | ||
|
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|
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| local function get_dubbo_request(conf, ctx) | ||
| -- use dubbo and fastjson | ||
| local first_byte4 = "\xda\xbb\xc6\x00" | ||
|
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| local requestId = "\x00\x00\x00\x00\x00\x00\x00\x01" | ||
| local version = "\"2.0.2\"\n" | ||
| local service = "\"" .. conf.service_name .. "\"" .. "\n" | ||
|
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| local service_version = "\"" .. conf.service_version .. "\"" .. "\n" | ||
| local method_name = "\"" .. conf.method .. "\"" .. "\n" | ||
|
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| local params_desc = "\"" .. conf.params_type_desc .. "\"" .. "\n" | ||
| local params = "" | ||
| local serialized = conf.serialized | ||
| if conf.serialization_header_key then | ||
| local serialization_header = core.request.header(ctx, conf.serialization_header_key) | ||
| serialized = serialization_header == "true" | ||
| end | ||
| if serialized then | ||
| params = core.request.get_body() | ||
| if params then | ||
| local end_of_params = core.string.sub(params, -1) | ||
| if end_of_params ~= "\n" then | ||
| params = params .. "\n" | ||
| end | ||
| end | ||
| else | ||
| local body_data = core.request.get_body() | ||
| if body_data then | ||
| local lua_object = core.json.decode(body_data); | ||
| for _, v in pairs(lua_object) do | ||
| local pt = type(v) | ||
| if pt == "nil" then | ||
| params = params .. "null" .. "\n" | ||
| elseif pt == "string" then | ||
| params = params .. string_to_json_string(v) .. "\n" | ||
| elseif pt == "number" then | ||
| params = params .. tostring(v) .. "\n" | ||
| else | ||
| params = params .. core.json.encode(v) .. "\n" | ||
| end | ||
| end | ||
| end | ||
|
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||
| end | ||
| local attachments = "{}\n" | ||
| if params == nil then | ||
| params = "" | ||
| end | ||
| local payload = #version + #service + #service_version | ||
| + #method_name + #params_desc + #params + #attachments | ||
| return { | ||
| first_byte4, | ||
| requestId, | ||
| str_int32(payload), | ||
| version, | ||
| service, | ||
| service_version, | ||
| method_name, | ||
| params_desc, | ||
| params, | ||
| attachments | ||
| } | ||
| end | ||
|
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|
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| function _M.before_proxy(conf, ctx) | ||
| local sock = ngx.socket.tcp() | ||
|
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| sock:settimeouts(conf.connect_timeout, conf.send_timeout, conf.read_timeout) | ||
| local ok, err = sock:connect(ctx.picked_server.host, ctx.picked_server.port) | ||
| if not ok then | ||
| sock:close() | ||
| core.log.error("failed to connect to upstream ", err) | ||
| return 502 | ||
| end | ||
| local request = get_dubbo_request(conf, ctx) | ||
| local bytes, _ = sock:send(request) | ||
| if bytes > 0 then | ||
| local header, _ = sock:receiveany(16); | ||
| if header then | ||
| local header_info = parse_dubbo_header(header) | ||
| if header_info and header_info.status == 20 then | ||
| local readline = sock:receiveuntil("\n") | ||
| local body_status, _, _ = readline() | ||
| if body_status then | ||
| local response_status = core.string.sub(body_status, 1, 1) | ||
| if response_status == "2" or response_status == "5" then | ||
| sock:close() | ||
| return 200 | ||
| elseif response_status == "1" or response_status == "4" then | ||
| local body, _, _ = readline() | ||
| sock:close() | ||
| return 200, body | ||
| end | ||
| end | ||
| end | ||
| end | ||
| end | ||
| sock:close() | ||
| return 500 | ||
|
|
||
| end | ||
|
|
||
| return _M |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -109,6 +109,7 @@ degraphql | |
| kafka-proxy | ||
| grpc-transcode | ||
| grpc-web | ||
| http-dubbo | ||
| public-api | ||
| prometheus | ||
| datadog | ||
|
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||
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