| -- |
| -- 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. |
| -- |
| |
| --- @module apis |
| -- Management interface for apis for the gateway |
| |
| local cjson = require "cjson" |
| local dataStore = require "lib/dataStore" |
| local utils = require "lib/utils" |
| local request = require "lib/request" |
| local apis = require "management/lib/apis" |
| local tenants = require "management/lib/tenants" |
| local swagger = require "management/lib/swagger" |
| local validation = require "management/lib/validation" |
| |
| local REDIS_HOST = os.getenv("REDIS_HOST") |
| local REDIS_PORT = os.getenv("REDIS_PORT") |
| local REDIS_PASS = os.getenv("REDIS_PASS") |
| |
| local _M = {} |
| |
| --- Request handler for routing API calls appropriately |
| function _M.requestHandler(dataStore) |
| local requestMethod = ngx.req.get_method() |
| ngx.header.content_type = "application/json; charset=utf-8" |
| if requestMethod == "GET" then |
| getAPIs(dataStore) |
| elseif requestMethod == 'POST' or requestMethod == 'PUT' then |
| addAPI(dataStore) |
| elseif requestMethod == "DELETE" then |
| deleteAPI(dataStore) |
| else |
| request.err(400, "Invalid verb.") |
| end |
| end |
| |
| function getAPIs(dataStore) |
| local queryParams = ngx.req.get_uri_args() |
| local id = ngx.var.api_id |
| local version = ngx.var.version |
| if id == '' then |
| local apiList |
| if version == 'v1' then |
| apiList = apis.getAllAPIs(dataStore, queryParams) |
| elseif version == 'v2' then |
| local tenantId = ngx.var.tenantId |
| local v2ApiList = {} |
| apiList = tenants.getTenantAPIs(dataStore, tenantId, queryParams) |
| for _, api in pairs(apiList) do |
| v2ApiList[#v2ApiList+1] = { |
| artifact_id = api.id, |
| managed_url = api.managedUrl, |
| open_api_doc = dataStore:getSwagger(api.id) |
| } |
| end |
| apiList = v2ApiList |
| end |
| apiList = (next(apiList) == nil) and "[]" or cjson.encode(apiList) |
| dataStore:close() |
| request.success(200, apiList) |
| else |
| local query = ngx.var.query |
| if query ~= '' then |
| if query ~= "tenant" then |
| dataStore:close() |
| request.err(400, "Invalid request") |
| else |
| local tenant = apis.getAPITenant(dataStore, id) |
| tenant = cjson.encode(tenant) |
| dataStore:close() |
| request.success(200, tenant) |
| end |
| else |
| local api = apis.getAPI(dataStore, id) |
| if version == 'v1' then |
| dataStore:close() |
| api = cjson.encode(api) |
| request.success(200, api) |
| elseif version == 'v2' then |
| local returnObj = { |
| artifact_id = api.id, |
| managed_url = api.managedUrl, |
| open_api_doc = dataStore:getSwagger(api.id) |
| } |
| dataStore:close() |
| request.success(200, cjson.encode(returnObj)) |
| end |
| end |
| end |
| end |
| |
| function addAPI(dataStore) |
| local id = ngx.var.api_id |
| local existingAPI = checkForExistingAPI(dataStore, id) |
| ngx.req.read_body() |
| local args = ngx.req.get_body_data() |
| if not args then |
| dataStore:close() |
| request.err(400, "Missing request body") |
| end |
| -- Convert json into Lua table |
| local version = ngx.var.version |
| local decoded |
| local swaggerTable; |
| if version == 'v1' then |
| decoded = cjson.decode(args) |
| elseif version == 'v2' then |
| swaggerTable = cjson.decode(args) |
| decoded = swagger.parseSwagger(swaggerTable) |
| local tenantId = ngx.var.tenantId |
| local tenant = { |
| namespace = tenantId, |
| instance = '' |
| } |
| tenants.addTenant(dataStore, tenant, {id = tenantId}) |
| decoded.tenantId = tenantId |
| end |
| -- Check for api id in JSON body |
| if existingAPI == nil and decoded.id ~= nil then |
| existingAPI = dataStore:getAPI(decoded.id) |
| if existingAPI == nil then |
| dataStore:close() |
| request.err(404, utils.concatStrings({"Unknown API id ", decoded.id})) |
| end |
| end |
| local err = validation.validate(dataStore, decoded) |
| if err ~= nil then |
| dataStore:close() |
| request.err(err.statusCode, err.message) |
| end |
| local managedUrlObj = apis.addAPI(dataStore, decoded, existingAPI) |
| if version == 'v1' then |
| dataStore:close() |
| managedUrlObj = cjson.encode(managedUrlObj) |
| request.success(200, managedUrlObj) |
| elseif version == 'v2' then |
| dataStore:addSwagger(managedUrlObj.id, swaggerTable) |
| local returnObj = { |
| artifact_id = managedUrlObj.id, |
| managed_url = managedUrlObj.managedUrl, |
| open_api_doc = swaggerTable |
| } |
| dataStore:close() |
| request.success(200, cjson.encode(returnObj)) |
| end |
| end |
| |
| function deleteAPI(dataStore) |
| local id = ngx.var.api_id |
| if id == nil or id == '' then |
| dataStore:close() |
| request.err(400, "No id specified.") |
| end |
| apis.deleteAPI(dataStore, id) |
| local version = ngx.var.version |
| if version == 'v1' then |
| dataStore:close() |
| request.success(200, cjson.encode({})) |
| elseif version == 'v2' then |
| dataStore:deleteSwagger(id) |
| dataStore:close() |
| request.success(204) |
| end |
| end |
| |
| --- Check for api id from uri and use existing API if it already exists in redis |
| -- @param red Redis client instance |
| -- @param id API id to check |
| function checkForExistingAPI(dataStore, id) |
| local existing |
| if id ~= nil and id ~= '' then |
| existing = dataStore:getAPI(id) |
| if existing == nil then |
| dataStore:close() |
| request.err(404, utils.concatStrings({"Unknown API id ", id})) |
| end |
| end |
| return existing |
| end |
| |
| return _M; |