| -- Copyright (c) 2016 IBM. All rights reserved. |
| -- |
| -- Permission is hereby granted, free of charge, to any person obtaining a |
| -- copy of this software and associated documentation files (the "Software"), |
| -- to deal in the Software without restriction, including without limitation |
| -- the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| -- and/or sell copies of the Software, and to permit persons to whom the |
| -- Software is furnished to do so, subject to the following conditions: |
| -- |
| -- The above copyright notice and this permission notice shall be included in |
| -- all copies or substantial portions of the Software. |
| -- |
| -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| -- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| -- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| -- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| -- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| -- FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| -- DEALINGS IN THE SOFTWARE. |
| |
| --- @module apis |
| -- Module for querying APIs |
| |
| local cjson = require "cjson" |
| local redis = require "lib/redis" |
| local utils = require "lib/utils" |
| local request = require "lib/request" |
| local resources = require "management/lib/resources" |
| |
| local MANAGEDURL_HOST = os.getenv("PUBLIC_MANAGEDURL_HOST") |
| MANAGEDURL_HOST = (MANAGEDURL_HOST ~= nil and MANAGEDURL_HOST ~= '') and MANAGEDURL_HOST or "0.0.0.0" |
| local MANAGEDURL_PORT = os.getenv("PUBLIC_MANAGEDURL_PORT") |
| MANAGEDURL_PORT = (MANAGEDURL_PORT ~= nil and MANAGEDURL_PORT ~= '') and MANAGEDURL_PORT or "8080" |
| |
| local _M = {} |
| |
| --- Get all APIs in redis |
| -- @param red redis client |
| -- @param queryParams object containing optional query parameters |
| function _M.getAllAPIs(red, queryParams) |
| local apis = redis.getAllAPIs(red) |
| local apiList |
| if next(queryParams) ~= nil then |
| apiList = filterAPIs(apis, queryParams); |
| end |
| if apiList == nil then |
| apiList = {} |
| for k, v in pairs(apis) do |
| if k%2 == 0 then |
| apiList[#apiList+1] = cjson.decode(v) |
| end |
| end |
| end |
| return apiList |
| end |
| |
| --- Get API by its id |
| -- @param red redis client |
| -- @param id of API |
| function _M.getAPI(red, id) |
| local api = redis.getAPI(red, id) |
| if api == nil then |
| request.err(404, utils.concatStrings({"Unknown api id ", id})) |
| end |
| return api |
| end |
| |
| --- Get belongsTo relation tenant |
| -- @param red redis client |
| -- @param id id of API |
| function _M.getAPITenant(red, id) |
| local api = redis.getAPI(red, id) |
| if api == nil then |
| request.err(404, utils.concatStrings({"Unknown api id ", id})) |
| end |
| local tenantId = api.tenantId |
| local tenant = redis.getTenant(red, tenantId) |
| if tenant == nil then |
| request.err(404, utils.concatStrings({"Unknown tenant id ", tenantId})) |
| end |
| return tenant |
| end |
| |
| --- Add API to redis |
| -- @param red redis client |
| -- @param decoded JSON body as a lua table |
| -- @param existingAPI optional existing API for updates |
| function _M.addAPI(red, decoded, existingAPI) |
| -- Format basePath |
| local basePath = decoded.basePath:sub(1,1) == '/' and decoded.basePath:sub(2) or decoded.basePath |
| basePath = basePath:sub(-1) == '/' and basePath:sub(1, -2) or basePath |
| -- Create managedUrl object |
| local uuid = existingAPI ~= nil and existingAPI.id or utils.uuid() |
| local managedUrl = utils.concatStrings({"http://", MANAGEDURL_HOST, ":", MANAGEDURL_PORT, "/api/", decoded.tenantId}) |
| if basePath:sub(1,1) ~= '' then |
| managedUrl = utils.concatStrings({managedUrl, "/", basePath}) |
| end |
| local tenantObj = redis.getTenant(red, decoded.tenantId) |
| local managedUrlObj = { |
| id = uuid, |
| name = decoded.name, |
| basePath = utils.concatStrings({"/", basePath}), |
| tenantId = decoded.tenantId, |
| tenantNamespace = tenantObj.namespace, |
| tenantInstance = tenantObj.instance, |
| resources = decoded.resources, |
| managedUrl = managedUrl |
| } |
| -- Add API object to redis |
| managedUrlObj = redis.addAPI(red, uuid, managedUrlObj, existingAPI) |
| -- Add resources to redis |
| for path, resource in pairs(decoded.resources) do |
| local gatewayPath = utils.concatStrings({basePath, path}) |
| gatewayPath = (gatewayPath:sub(1,1) == '/') and gatewayPath:sub(2) or gatewayPath |
| resource.apiId = uuid |
| resources.addResource(red, resource, gatewayPath, tenantObj) |
| end |
| return managedUrlObj |
| end |
| |
| --- Delete API from gateway |
| -- @param red redis client |
| -- @param id id of API to delete |
| function _M.deleteAPI(red, id) |
| local api = redis.getAPI(red, id) |
| if api == nil then |
| request.err(404, utils.concatStrings({"Unknown API id ", id})) |
| end |
| -- Delete API |
| redis.deleteAPI(red, id) |
| -- Delete all resources for the API |
| local basePath = api.basePath:sub(2) |
| for path in pairs(api.resources) do |
| local gatewayPath = utils.concatStrings({basePath, path}) |
| gatewayPath = (gatewayPath:sub(1,1) == '/') and gatewayPath:sub(2) or gatewayPath |
| resources.deleteResource(red, gatewayPath, api.tenantId) |
| end |
| return {} |
| end |
| |
| --- Filter APIs based on query parameters |
| -- @param apis list of apis |
| -- @param queryParams query parameters to filter tenants |
| function filterAPIs(apis, queryParams) |
| local basePath = queryParams['filter[where][basePath]'] |
| basePath = basePath == nil and queryParams['basePath'] or basePath |
| local name = queryParams['filter[where][name]'] |
| name = name == nil and queryParams['title'] or name |
| -- missing or invalid query parameters |
| if (basePath == nil and name == nil) then |
| return nil |
| end |
| -- filter tenants |
| local apiList = {} |
| for k, v in pairs(apis) do |
| if k%2 == 0 then |
| local api = cjson.decode(v) |
| if (basePath ~= nil and name == nil and api.basePath == basePath) or |
| (name ~= nil and basePath == nil and api.name == name) or |
| (basePath ~= nil and name ~= nil and api.basePath == basePath and api.name == name) then |
| apiList[#apiList+1] = api |
| end |
| end |
| end |
| return apiList |
| end |
| |
| return _M |