| -- |
| -- 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 get_routes = require("apisix.router").http_routes |
| local get_services = require("apisix.http.service").services |
| local utils = require("apisix.admin.utils") |
| local tostring = tostring |
| local ipairs = ipairs |
| local type = type |
| |
| |
| local _M = { |
| version = 0.2, |
| } |
| |
| |
| local function get_chash_key_schema(hash_on) |
| if not hash_on then |
| return nil, "hash_on is nil" |
| end |
| |
| if hash_on == "vars" then |
| return core.schema.upstream_hash_vars_schema |
| end |
| |
| if hash_on == "header" or hash_on == "cookie" then |
| return core.schema.upstream_hash_header_schema |
| end |
| |
| if hash_on == "consumer" then |
| return nil, nil |
| end |
| |
| return nil, "invalid hash_on type " .. hash_on |
| end |
| |
| |
| local function check_upstream_conf(conf) |
| local ok, err = core.schema.check(core.schema.upstream, conf) |
| if not ok then |
| return false, "invalid configuration: " .. err |
| end |
| |
| if conf.pass_host == "node" and conf.nodes and |
| core.table.nkeys(conf.nodes) ~= 1 |
| then |
| return false, "only support single node for `node` mode currently" |
| end |
| |
| if conf.pass_host == "rewrite" and |
| (conf.upstream_host == nil or conf.upstream_host == "") |
| then |
| return false, "`upstream_host` can't be empty when `pass_host` is `rewrite`" |
| end |
| |
| if conf.type ~= "chash" then |
| return true |
| end |
| |
| if not conf.hash_on then |
| conf.hash_on = "vars" |
| end |
| |
| if conf.hash_on ~= "consumer" and not conf.key then |
| return false, "missing key" |
| end |
| |
| local key_schema, err = get_chash_key_schema(conf.hash_on) |
| if err then |
| return false, "type is chash, err: " .. err |
| end |
| |
| if key_schema then |
| local ok, err = core.schema.check(key_schema, conf.key) |
| if not ok then |
| return false, "invalid configuration: " .. err |
| end |
| end |
| |
| return true |
| end |
| |
| |
| local function check_conf(id, conf, need_id) |
| if not conf then |
| return nil, {error_msg = "missing configurations"} |
| end |
| |
| id = id or conf.id |
| if need_id and not id then |
| return nil, {error_msg = "missing upstream id"} |
| end |
| |
| if not need_id and id then |
| return nil, {error_msg = "wrong upstream id, do not need it"} |
| end |
| |
| if need_id and conf.id and tostring(conf.id) ~= tostring(id) then |
| return nil, {error_msg = "wrong upstream id"} |
| end |
| |
| -- let schema check id |
| conf.id = id |
| |
| core.log.info("schema: ", core.json.delay_encode(core.schema.upstream)) |
| core.log.info("conf : ", core.json.delay_encode(conf)) |
| |
| local ok, err = check_upstream_conf(conf) |
| if not ok then |
| return nil, {error_msg = err} |
| end |
| |
| return need_id and id or true |
| end |
| |
| |
| function _M.put(id, conf) |
| local id, err = check_conf(id, conf, true) |
| if not id then |
| return 400, err |
| end |
| |
| local key = "/upstreams/" .. id |
| core.log.info("key: ", key) |
| |
| local ok, err = utils.inject_conf_with_prev_conf("upstream", key, conf) |
| if not ok then |
| return 500, {error_msg = err} |
| end |
| |
| local res, err = core.etcd.set(key, conf) |
| if not res then |
| core.log.error("failed to put upstream[", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| return res.status, res.body |
| end |
| |
| |
| function _M.get(id) |
| local key = "/upstreams" |
| if id then |
| key = key .. "/" .. id |
| end |
| |
| local res, err = core.etcd.get(key, not id) |
| if not res then |
| core.log.error("failed to get upstream[", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| return res.status, res.body |
| end |
| |
| |
| function _M.post(id, conf) |
| local id, err = check_conf(id, conf, false) |
| if not id then |
| return 400, err |
| end |
| |
| local key = "/upstreams" |
| utils.inject_timestamp(conf) |
| local res, err = core.etcd.push(key, conf) |
| if not res then |
| core.log.error("failed to post upstream[", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| return res.status, res.body |
| end |
| |
| |
| function _M.delete(id) |
| if not id then |
| return 400, {error_msg = "missing upstream id"} |
| end |
| |
| local routes, routes_ver = get_routes() |
| core.log.info("routes: ", core.json.delay_encode(routes, true)) |
| core.log.info("routes_ver: ", routes_ver) |
| if routes_ver and routes then |
| for _, route in ipairs(routes) do |
| if type(route) == "table" and route.value |
| and route.value.upstream_id |
| and tostring(route.value.upstream_id) == id then |
| return 400, {error_msg = "can not delete this upstream," |
| .. " route [" .. route.value.id |
| .. "] is still using it now"} |
| end |
| end |
| end |
| |
| local services, services_ver = get_services() |
| core.log.info("services: ", core.json.delay_encode(services, true)) |
| core.log.info("services_ver: ", services_ver) |
| if services_ver and services then |
| for _, service in ipairs(services) do |
| if type(service) == "table" and service.value |
| and service.value.upstream_id |
| and tostring(service.value.upstream_id) == id then |
| return 400, {error_msg = "can not delete this upstream," |
| .. " service [" .. service.value.id |
| .. "] is still using it now"} |
| end |
| end |
| end |
| |
| local key = "/upstreams/" .. id |
| local res, err = core.etcd.delete(key) |
| if not res then |
| core.log.error("failed to delete upstream[", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| return res.status, res.body |
| end |
| |
| |
| function _M.patch(id, conf, sub_path) |
| if not id then |
| return 400, {error_msg = "missing upstream id"} |
| end |
| |
| if not conf then |
| return 400, {error_msg = "missing new configuration"} |
| end |
| |
| if not sub_path or sub_path == "" then |
| if type(conf) ~= "table" then |
| return 400, {error_msg = "invalid configuration"} |
| end |
| end |
| |
| local key = "/upstreams" .. "/" .. id |
| local res_old, err = core.etcd.get(key) |
| if not res_old then |
| core.log.error("failed to get upstream [", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| if res_old.status ~= 200 then |
| return res_old.status, res_old.body |
| end |
| core.log.info("key: ", key, " old value: ", |
| core.json.delay_encode(res_old, true)) |
| |
| local new_value = res_old.body.node.value |
| local modified_index = res_old.body.node.modifiedIndex |
| |
| if sub_path and sub_path ~= "" then |
| local code, err, node_val = core.table.patch(new_value, sub_path, conf) |
| new_value = node_val |
| if code then |
| return code, err |
| end |
| else |
| new_value = core.table.merge(new_value, conf); |
| end |
| |
| utils.inject_timestamp(new_value, nil, conf) |
| |
| core.log.info("new value ", core.json.delay_encode(new_value, true)) |
| |
| local id, err = check_conf(id, new_value, true) |
| if not id then |
| return 400, err |
| end |
| |
| local res, err = core.etcd.atomic_set(key, new_value, nil, modified_index) |
| if not res then |
| core.log.error("failed to set new upstream[", key, "]: ", err) |
| return 500, {error_msg = err} |
| end |
| |
| return res.status, res.body |
| end |
| |
| -- for routes and services check upstream conf |
| _M.check_upstream_conf = check_upstream_conf |
| |
| |
| return _M |