| -- |
| -- 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 core = require("apisix.core") |
| local http = require("resty.http") |
| local ngx_encode_base64 = ngx.encode_base64 |
| local tostring = tostring |
| |
| local name_pattern = [[\A([\w]|[\w][\w@ .-]*[\w@.-]+)\z]] |
| |
| local schema = { |
| type = "object", |
| properties = { |
| api_host = {type = "string"}, |
| ssl_verify = { |
| type = "boolean", |
| default = true, |
| }, |
| service_token = {type = "string"}, |
| namespace = {type = "string", maxLength = 256, pattern = name_pattern}, |
| package = {type = "string", maxLength = 256, pattern = name_pattern}, |
| action = {type = "string", maxLength = 256, pattern = name_pattern}, |
| result = { |
| type = "boolean", |
| default = true, |
| }, |
| timeout = { |
| type = "integer", |
| minimum = 1, |
| maximum = 60000, |
| default = 3000, |
| description = "timeout in milliseconds", |
| }, |
| keepalive = {type = "boolean", default = true}, |
| keepalive_timeout = {type = "integer", minimum = 1000, default = 60000}, |
| keepalive_pool = {type = "integer", minimum = 1, default = 5} |
| }, |
| required = {"api_host", "service_token", "namespace", "action"} |
| } |
| |
| |
| local _M = { |
| version = 0.1, |
| priority = -1901, |
| name = "openwhisk", |
| schema = schema, |
| } |
| |
| |
| function _M.check_schema(conf) |
| local ok, err = core.schema.check(schema, conf) |
| if not ok then |
| return false, err |
| end |
| |
| return true |
| end |
| |
| |
| function _M.access(conf, ctx) |
| local params = { |
| method = "POST", |
| body = core.request.get_body(), |
| query = { |
| blocking = "true", |
| result = tostring(conf.result), |
| timeout = conf.timeout |
| }, |
| headers = { |
| ["Authorization"] = "Basic " .. ngx_encode_base64(conf.service_token), |
| ["Content-Type"] = "application/json", |
| }, |
| keepalive = conf.keepalive, |
| ssl_verify = conf.ssl_verify |
| } |
| |
| if conf.keepalive then |
| params.keepalive_timeout = conf.keepalive_timeout |
| params.keepalive_pool = conf.keepalive_pool |
| end |
| |
| -- OpenWhisk action endpoint |
| local package = conf.package and conf.package .. "/" or "" |
| local endpoint = conf.api_host .. "/api/v1/namespaces/" .. conf.namespace .. |
| "/actions/" .. package .. conf.action |
| |
| local httpc = http.new() |
| httpc:set_timeout(conf.timeout) |
| |
| local res, err = httpc:request_uri(endpoint, params) |
| |
| if not res then |
| core.log.error("failed to process openwhisk action, err: ", err) |
| return 503 |
| end |
| |
| -- check if res.body is nil |
| if res.body == nil then |
| return res.status, res.body |
| end |
| |
| -- parse OpenWhisk JSON response |
| -- OpenWhisk supports two types of responses, the user can return only |
| -- the response body, or set the status code and header. |
| local result, err = core.json.decode(res.body) |
| |
| if not result then |
| core.log.error("failed to parse openwhisk response data: ", err) |
| return 503 |
| end |
| |
| -- setting response headers |
| if result.headers ~= nil then |
| core.response.set_header(result.headers) |
| end |
| |
| local code = result.statusCode or res.status |
| local body = result.body or res.body |
| return code, body |
| |
| end |
| |
| |
| return _M |