apisix/t/node/ewma.t

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#
# 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.
#
use t::APISIX 'no_plan';
repeat_each(1);
#no_long_string();
no_root_location();
log_level('info');
run_tests;
__DATA__
=== TEST 1: add upstream
--- config
location /t {
content_by_lua_block {
local t = require("lib.test_admin").test
local code, body = t('/apisix/admin/routes/1',
ngx.HTTP_PUT,
[[{
"upstream": {
"nodes": {
"127.0.0.1:1980": 100,
"127.0.0.1:1981": 100
},
"type": "ewma"
},
"uri": "/ewma"
}]]
)
if code >= 300 then
ngx.status = code
end
ngx.say(body)
}
}
--- request
GET /t
--- response_body
passed
--- no_error_log
[error]
=== TEST 2: about latency
--- timeout: 5
--- config
location /t {
content_by_lua_block {
--node: "127.0.0.1:1980": latency is 0.001
--node: "127.0.0.1:1981": latency is 0.005
local http = require "resty.http"
local uri = "http://127.0.0.1:" .. ngx.var.server_port
.. "/ewma"
local ports_count = {}
for i = 1, 12 do
local httpc = http.new()
httpc:set_timeout(1000)
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
ports_count[res.body] = (ports_count[res.body] or 0) + 1
end
local ports_arr = {}
for port, count in pairs(ports_count) do
table.insert(ports_arr, {port = port, count = count})
end
local function cmd(a, b)
return a.port > b.port
end
table.sort(ports_arr, cmd)
ngx.say(require("toolkit.json").encode(ports_arr))
ngx.exit(200)
}
}
--- request
GET /t
--- response_body
[{"count":1,"port":"1981"},{"count":11,"port":"1980"}]
--- error_code: 200
--- no_error_log
[error]
=== TEST 3: about frequency
--- timeout: 30
--- config
location /t {
content_by_lua_block {
local t = require("lib.test_admin").test
local http = require "resty.http"
local uri = "http://127.0.0.1:" .. ngx.var.server_port
.. "/ewma"
--node: "127.0.0.1:1980": latency is 0.001
--node: "127.0.0.1:1981": latency is 0.005
local ports_count = {}
for i = 1, 2 do
local httpc = http.new()
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
end
--remove the 1981 node,
--add the 1982 node
--keep two nodes for triggering ewma logic in server_picker function of balancer phase
local code, body = t('/apisix/admin/routes/1',
ngx.HTTP_PUT,
[[{
"upstream": {
"nodes": {
"127.0.0.1:1980": 100,
"127.0.0.1:1982": 100
},
"type": "ewma"
},
"uri": "/ewma"
}]]
)
if code ~= 200 then
ngx.say("update route failed")
return
end
ngx.sleep(11)
--keep the node 1980 hot
for i = 1, 12 do
local httpc = http.new()
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
end
--recover the 1981 node
local code, body = t('/apisix/admin/routes/1',
ngx.HTTP_PUT,
[[{
"upstream": {
"nodes": {
"127.0.0.1:1980": 100,
"127.0.0.1:1981": 100
},
"type": "ewma"
},
"uri": "/ewma"
}]]
)
if code ~= 200 then
ngx.say("update route failed")
return
end
--should select the 1981 node,because it is idle
local httpc = http.new()
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
ngx.say(require("toolkit.json").encode({port = res.body, count = 1}))
ngx.exit(200)
}
}
--- request
GET /t
--- response_body
{"count":1,"port":"1981"}
--- error_code: 200
--- no_error_log
[error]
=== TEST 4: about filter tried servers
--- timeout: 10
--- config
location /t {
content_by_lua_block {
local t = require("lib.test_admin").test
--remove the 1981 node,
--add the 9527 node (invalid node)
--keep two nodes for triggering ewma logic in server_picker function of balancer phase
local code, body = t('/apisix/admin/routes/1',
ngx.HTTP_PUT,
[[{
"upstream": {
"nodes": {
"127.0.0.1:1980": 1,
"127.0.0.1:9527": 1
},
"type": "ewma",
"timeout": {
"connect": 0.1,
"send": 0.5,
"read": 0.5
}
},
"uri": "/ewma"
}]]
)
if code ~= 200 then
ngx.say("update route failed")
return
end
local http = require "resty.http"
local uri = "http://127.0.0.1:" .. ngx.var.server_port
.. "/ewma"
--should always select the 1980 node, because 0 is invalid
local t = {}
local ports_count = {}
for i = 1, 12 do
local th = assert(ngx.thread.spawn(function(i)
local httpc = http.new()
httpc:set_timeout(2000)
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
ports_count[res.body] = (ports_count[res.body] or 0) + 1
end, i))
table.insert(t, th)
end
for i, th in ipairs(t) do
ngx.thread.wait(th)
end
local ports_arr = {}
for port, count in pairs(ports_count) do
table.insert(ports_arr, {port = port, count = count})
end
local function cmd(a, b)
return a.port > b.port
end
table.sort(ports_arr, cmd)
ngx.say(require("toolkit.json").encode(ports_arr))
ngx.exit(200)
}
}
--- request
GET /t
--- response_body
[{"count":12,"port":"1980"}]
--- error_code: 200
--- error_log
Connection refused) while connecting to upstream
=== TEST 5: about all endpoints have been retried
--- timeout: 10
--- config
location /t {
content_by_lua_block {
local t = require("lib.test_admin").test
--add the 9527 node (invalid node)
--add the 9528 node (invalid node)
--keep two nodes for triggering ewma logic in server_picker function of balancer phase
local code, body = t('/apisix/admin/routes/1',
ngx.HTTP_PUT,
[[{
"upstream": {
"nodes": {
"127.0.0.1:9527": 1,
"127.0.0.1:9528": 1
},
"type": "ewma",
"timeout": {
"connect": 0.1,
"send": 0.5,
"read": 0.5
}
},
"uri": "/ewma"
}]]
)
if code ~= 200 then
ngx.say("update route failed")
return
end
local http = require "resty.http"
local uri = "http://127.0.0.1:" .. ngx.var.server_port
.. "/ewma"
--should always return 502, because both 9527 and 9528 are invalid
local t = {}
local ports_count = {}
for i = 1, 12 do
local th = assert(ngx.thread.spawn(function(i)
local httpc = http.new()
httpc:set_timeout(2000)
local res, err = httpc:request_uri(uri, {method = "GET", keepalive = false})
if not res then
ngx.say(err)
return
end
ports_count[res.status] = (ports_count[res.status] or 0) + 1
end, i))
table.insert(t, th)
end
for i, th in ipairs(t) do
ngx.thread.wait(th)
end
local ports_arr = {}
for port, count in pairs(ports_count) do
table.insert(ports_arr, {port = port, count = count})
end
local function cmd(a, b)
return a.port > b.port
end
table.sort(ports_arr, cmd)
ngx.say(require("toolkit.json").encode(ports_arr))
ngx.exit(200)
}
}
--- request
GET /t
--- response_body
[{"count":12,"port":502}]
--- error_code: 200
--- error_log
Connection refused) while connecting to upstream