feat: add nacos support by benx203 · Pull Request #3820 · apache/apisix

benx203 · 2021-03-13T12:25:06Z

feat:add nacos support

add nacos support

spacewander

Please add test under t/discovery.

spacewander · 2021-03-13T13:59:43Z

And you need to add docs under https://github.com/apache/apisix/tree/master/docs/en/latest/discovery

spacewander · 2021-03-17T06:49:21Z

Please make sure it can pass the lint.

spacewander · 2021-03-18T07:06:12Z

+discovery:
+  nacos:
+    host:
+      - "http://192.168.33.1:8848"


Why don't mention the user / password feature?

Because Nacos not need login yet.

spacewander · 2021-03-18T07:13:49Z

+        },
+        fetch_interval = {type = "integer", minimum = 1, default = 30},
+        prefix = {type = "string"},
+        weight = {type = "integer", minimum = 0},


Missing default for weight?
And the minimum weight should be 1.

OK,I copy from eureka.

spacewander · 2021-03-18T07:14:43Z

+
+    local httpc = http.new()
+    local timeout = local_conf.discovery.nacos.timeout
+    local connect_timeout = timeout and timeout.connect or 2000


The default value will be injected via schema check. We don't need to assign it.

spacewander · 2021-03-18T07:18:51Z

+    log.info("default_weight:", default_weight, ".")
+    local fetch_interval = local_conf.discovery.nacos.fetch_interval or 30
+    log.info("fetch_interval:", fetch_interval, ".")
+    service_list_path = local_conf.discovery.nacos.service_list_path or


Where should I configure service_list_path? There is neither schema nor doc for it.

I will fix it.

spacewander · 2021-03-18T07:18:59Z

+    log.info("fetch_interval:", fetch_interval, ".")
+    service_list_path = local_conf.discovery.nacos.service_list_path or
+            'ns/service/list?pageNo=1&pageSize=20'
+    instance_list_path = local_conf.discovery.nacos.instance_list_path or


spacewander · 2021-03-18T07:19:30Z

+    end
+
+    local up_apps = core.table.new(0, 0)
+    local data = get_url(base_uri,basic_auth,service_list_path)


Need space after the comma.
And please check the returned value of get_url.

spacewander · 2021-03-18T07:22:24Z

+    log.info("nacos uri:", request_uri, ".")
+    local url = request_uri .. path
+    local headers = core.table.new(0, 5)
+    headers['Connection'] = 'Keep-Alive'


We don't need it for HTTP 1.1

spacewander · 2021-03-18T07:22:45Z

+local function request(request_uri, basic_auth, method, path, query, body)
+    log.info("nacos uri:", request_uri, ".")
+    local url = request_uri .. path
+    local headers = core.table.new(0, 5)


Why choose 5?

spacewander · 2021-03-18T07:24:43Z

+    if local_conf.discovery.nacos.prefix then
+        url = url .. local_conf.discovery.nacos.prefix
+    end
+    if string_sub(url, #url) ~= "/" then


Better to use str_byte(uri, #uri) == str_byte("/")

spacewander · 2021-03-23T10:11:34Z

+    fetch_interval: 30    # default 30 sec
+    weight: 100           # default 100
+    timeout:
+      connect: 2000       # default 2000


Better to mention the unit is ms.

spacewander · 2021-03-23T10:14:45Z

+--- pipelined_requests eval
+[
+    "POST /nacos/v1/ns/instance?port=18001&healthy=true&ip=127.0.0.1&weight=1.0&serviceName=APISIX-NACOS&encoding=GBK&enabled=true",
+    "DELETE /nacos/v1/ns/service?serviceName=APISIX-NACOS",


Why POST and then DELETE?

If has no data,delete return code is 400,if has data,delete return code is 200.

But it is not the feature of APISIX. We don't need to test nacos itself.

spacewander · 2021-03-23T10:15:20Z

+#END
+--- request
+GET /hello
+--- error_code: 200


We need to show if server 1 or server 2 is hit.
And we need a test to show the default weight

spacewander · 2021-03-23T10:16:23Z

+```shell
+$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -i -d '
+{
+    "uri": "/nacos/**",


Use /nacos/* is enough?

spacewander · 2021-03-23T10:17:16Z

    docker run --rm --name consul_2 -d -p 8600:8500 consul:1.7 consul agent -server -bootstrap-expect=1 -client 0.0.0.0 -log-level info -data-dir=/consul/data
+
+    # start nacos server
+    docker run --rm --name nacos_1 -d --env PREFER_HOST_MODE=hostname --env MODE=standalone --env JVM_XMS=512m --env JVM_XMX=512m --env JVM_XMN=256m -p8848:8848 nacos/nacos-server:latest


We need test the user/password feature.

If add NACOS_AUTH_ENABLE=true, file nacos.t need login too.
Could you give me a t file login demo?

You can use different conf in different tests, one for auth success and another for auth fail.

How to check nacos in discovery plugin whether authed?

If the auth enable nacos can be used, the auth is successful.

But if nacos start with auth mode,in nacos.t add services to nacos need send auth token.
How can i save auth token in nacos.t?

You can export the auth function: https://github.com/apache/apisix/pull/3820/files#diff-46fd008790f9ea29612a92ca5c94212ae43c81ab6b902ef3014d3d6b4bdfc5b3R202
and call it in the test file.

spacewander · 2021-03-23T10:19:55Z

+}
+
+
+local function str_split (inputstr, sep)


Should use existent API:

apisix/apisix/plugins/proxy-cache.lua

Line 194 in e9a59ac

local levels = ngx_re.split(cache_levels, ":")

spacewander · 2021-03-23T10:22:08Z

+        prefix = {type = "string", default = "/nacos/v1/"},
+        auth_path = {type = "string", default = "auth/login"},
+        service_list_path = {type = "string", default = "ns/service/list?pageNo=1&pageSize=20"},
+        instance_list_path = {type = "string", default = "ns/instance/list?serviceName="},


Need a test to check the user-defined paths.
BTW, in what situation people need to redefine the paths?

When Nacos api change.

@benx203
I think we can remove it now and add it if needed.
We need to add a doc and test for this feature if you insist to keep it.
(I don't recommend to do that as this PR is big enough)

spacewander · 2021-03-23T11:23:57Z

+        fetch_interval = {type = "integer", minimum = 1, default = 30},
+        prefix = {type = "string", default = "/nacos/v1/"},
+        auth_path = {type = "string", default = "auth/login"},
+        service_list_path = {type = "string", default = "ns/service/list?pageNo=1&pageSize=20"},


Only return the first 20 services is not a good idea.
We need to iterate the upstreams and build a service list from those that have nacos discovery_type.
Like this:

apisix/apisix/control/v1.lua

Lines 144 to 149 in e9a59ac

values = get_upstreams()

else

return 400, {error_msg = str_format("invalid src type %s", src_type)}

end

local info, err = iter_and_find_healthcheck_info(values, src_type, src_id)

You might need some lazy load trick to break the dependent cycle.

spacewander · 2021-04-08T07:47:19Z

+        end
+
+        for _, host in ipairs(data.hosts) do
+            if tostring(host.valid) == 'true' and


I set up the environment and debug it myself.
Here is the host: {"enabled":true,"instanceHeartBeatTimeOut":15000,"ipDeleteTimeout":30000,"instanceHeartBeatInterval":5000,"metadata":{"preserved.register.source":"SPRING_CLOUD"},"port":18001,"serviceName":"DEFAULT_GROUP@@APISIX-NACOS","instanceId":"192.168.65.3#18001#DEFAULT#DEFAULT_GROUP@@APISIX-NACOS","healthy":true,"ip":"192.168.65.3","ephemeral":true,"clusterName":"DEFAULT","weight":1}

There is not valid field. The response doesn't match their API doc: https://nacos.io/en-us/docs/open-api.html

I am not sure if it is because the latest Nacos has changed the API. Maybe we need to use the tagged nacos image 2.0.0 instead of the latest one?

spacewander · 2021-04-08T07:48:38Z

+        nohup docker network rm nacos_net > /dev/null 2>&1 &
+        nohup docker network create nacos_net > /dev/null 2>&1 &
+        # nacos no auth server - for test no auth
+        docker run --rm -d --name nacos_no_auth --network nacos_net --hostname nacos2 --env NACOS_SERVERS="nacos1:8848 nacos2:8848" --env PREFER_HOST_MODE=hostname --env MODE=cluster --env EMBEDDED_STORAGE=embedded  --env JVM_XMS=512m --env JVM_XMX=512m --env JVM_XMN=256m -p8858:8848 nacos/nacos-server:latest


Would it be better to use nacos/nacos-server:2.0.0?

The nacos version should be 1.4.1,2.0.0 just released few days ago.

@benx203
Why can't we support 2.0.0 directly? Is 2.0.0 incompatible with 1.4.1?

I think better way is support both 2.0.0 and 1.4.1.
Maybe support 2.0.0 later?

spacewander · 2021-04-08T07:49:22Z

+        rm -rf tmp
+        mkdir tmp
+        cd tmp
+        wget https://raw.githubusercontent.com/benx203/nacos-test-service/main/spring-nacos-1.0-SNAPSHOT.jar


@benx203
Would you also submit the Java code to https://github.com/benx203/nacos-test-service? Thanks!

spacewander · 2021-04-08T11:30:06Z

+        for _, host in ipairs(data.hosts) do
+            if tostring(host.valid) == 'true' and
+                    tostring(host.healthy) == 'true' and
+                    tostring(host.enabled) == 'true' then


One more question: why we need to filter the result according to those fields?

If query all records,need to filter.
But now should not need any more.

Signed-off-by: spacewander <[email protected]>

spacewander · 2021-04-09T08:09:57Z

@benx203
I will work on this PR and fulfill my promise in a few days. Please be patient.

benx203 · 2021-04-09T09:32:59Z

@spacewander
OK.Take your time.

Signed-off-by: spacewander <[email protected]>

membphis · 2021-04-14T14:01:52Z

+            type = "array",
+            minItems = 1,
+            items = {
+                type = "string",


add a pattern to limit the string to the host format

membphis · 2021-04-14T14:02:12Z

+            },
+        },
+        fetch_interval = {type = "integer", minimum = 1, default = 30},
+        prefix = {type = "string", default = "/nacos/v1/"},


membphis · 2021-04-14T14:03:03Z

+
+
+local _M = {
+    version = 0.1,


this version is useless, we can drop it

membphis · 2021-04-14T14:04:31Z

+    local url = request_uri .. path
+    log.info("request url:", url)
+    local headers = core.table.new(0, 0)
+    headers['Accept'] = 'application/json'


for the string object, I think we use ", it is easier for reading.

headers["Accept"] = "application/json"

and please fix the similar points

membphis · 2021-04-14T14:07:22Z

+
+
+local function get_token_param(base_uri, username, password)
+    if username and password then


better style:

if not username or not password then return "" end ...

membphis · 2021-04-14T14:09:50Z

+
+local function get_token_param(base_uri, username, password)
+    if username and password then
+        local data, err = post_url(base_uri, auth_path .. "?username=" .. username


I think we should call ngx.encode_args for username and password

membphis · 2021-04-14T14:11:42Z

+
+
+local function iter_and_add_service(services, values)
+	if not values then


bad indentation

membphis · 2021-04-14T14:14:22Z

+    local host = local_conf.discovery.nacos.host
+    -- TODO Add health check to get healthy nodes.
+    local url = host[math_random(#host)]
+    local auth_idx = str_find(url, "@")


we'd better use the plain text model, better performance.

https://stackoverflow.com/questions/18973019/is-there-a-lua-string-find-without-pattern

membphis · 2021-04-14T14:17:35Z

+
+function _M.nodes(service_name)
+    local logged = false
+    while not applications do


I think we need to set a maximum waiting time , eg: 5 seconds

moonming · 2021-04-14T15:41:27Z

@benx203 thanks for your contribution.
You can create a new PR to fix the code style issue.
And it will be better if you can add support Nacos in the README.md to let more people know about this feature.

benx203 · 2021-04-15T11:31:33Z

@benx203 thanks for your contribution.
You can create a new PR to fix the code style issue.
And it will be better if you can add support Nacos in the README.md to let more people know about this feature.

OK,i will try,thank you all.

spacewander · 2021-04-19T08:17:25Z



 function _M.nodes(service_name)
-    local logged = false


The original code is good. We just need to set a 5s limitation.

Just keep simple.

The lazy init is important as the sync is slow.

OK,i rollback the code.

spacewander · 2021-04-19T08:21:25Z

+    local host = local_conf.discovery.nacos.host
+    -- TODO Add health check to get healthy nodes.
+    local url = host[math_random(#host)]
+    local auth_idx = str_find(url, '@', 1, true)


The core.string.find is already the plain string find... 😅
Not all the suggestion from the reviewer is correct.

benx203 · 2021-04-19T08:36:41Z

+    local values = get_upstreams()
+    iter_and_add_service(services, values)
+    values = get_routes()
+    iter_and_add_service(services, values)


By the way,Are there 'discovery_type' config in service and route?
@spacewander

Those can have embedded upstream field.

I see,thanks.

Signed-off-by: spacewander <[email protected]>

add nacos support

baab627

add nacos support

spacewander requested changes Mar 13, 2021

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add docs

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benx203 changed the title ~~add nacos support~~ feat:add nacos support Mar 15, 2021

spacewander changed the title ~~feat:add nacos support~~ feat: add nacos support Mar 15, 2021

benx203 added 2 commits March 18, 2021 11:28

fix lint warnings

5b14149

fix test

613c221

spacewander reviewed Mar 18, 2021

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benx203 added 18 commits March 18, 2021 18:05

fix nacos

f0b0942

fix nacos test script

221ee3a

fix

8e3e6a5

fix nacos - support auth

69055a0

fix

e412a70

fix

9b48317

fix

d8f819b

fix

46fe9fd

reindex

9e51570

fix env script

4a0dac6

fix env script

bbc3f1f

fix env script

b153240

fix test script

962be01

fix test script

26de944

fix

c1e6f00

fix

95ab302

fix

63eba52

fix

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spacewander reviewed Mar 23, 2021

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fix

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debug test

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spacewander reviewed Apr 8, 2021

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benx203 added 2 commits April 8, 2021 16:18

debug test

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debug test

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spacewander reviewed Apr 8, 2021

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spacewander added 2 commits April 9, 2021 14:45

fork the repo to prevent the original repo deleted by accident

c97c0a2

Signed-off-by: spacewander <[email protected]>

tweak

4936b19

Signed-off-by: spacewander <[email protected]>

spacewander added 3 commits April 14, 2021 11:20

WIP

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Signed-off-by: spacewander <[email protected]>

Merge branch 'master' into benx203_master

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Signed-off-by: spacewander <[email protected]>

fix lint

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Signed-off-by: spacewander <[email protected]>

spacewander approved these changes Apr 14, 2021

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membphis reviewed Apr 14, 2021

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moonming approved these changes Apr 14, 2021

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fix

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fix

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benx203 commented Apr 19, 2021

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benx203 and others added 5 commits April 19, 2021 16:48

fix

dfd6921

fix

8b196f3

fix

09767bd

trigger test

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style

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Signed-off-by: spacewander <[email protected]>

spacewander merged commit 8757080 into apache:master Apr 21, 2021

lijing-21 mentioned this pull request Jan 25, 2022

request help: Cooperation invitation from Apache APISIX community alibaba/nacos#7705

Closed

	values = get_upstreams()
	else
	return 400, {error_msg = str_format("invalid src type %s", src_type)}
	end

	local info, err = iter_and_find_healthcheck_info(values, src_type, src_id)



		local function get_token_param(base_uri, username, password)
		if username and password then



		local function iter_and_add_service(services, values)
		if not values then

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benx203 commented Mar 13, 2021 •

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spacewander Apr 8, 2021 •

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benx203 commented Apr 9, 2021 •

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