Pass brokerServiceUrl to websocket service configuration #166
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
rdhabalia
added
the
type/enhancement
merlimat
reviewed
Jan 17, 2017
Contributor
There was a problem hiding this comment.
Instead of ServiceConfig, we could use something like WebSocketProxyConfiguration
Contributor
Author
There was a problem hiding this comment.
Sure, made the change to rename ServiceConfig with WebSocketProxyConfiguration
|
Thank you for submitting this pull request, however I do not see a valid CLA on file for you. Before we can merge this request please visit https://yahoocla.herokuapp.com/ and agree to the terms. Thanks! 😄 |
|
CLA is valid! |
Contributor
|
Is this PR depending on #168 ? |
Contributor
Author
|
yes.. I will add change into #168 once this PR will be merged or other way around. |
merlimat
reviewed
Jan 20, 2017
conf/websocket.conf
Outdated
Contributor
There was a problem hiding this comment.
Shouldn't we also have serviceUrl and serviceUrlTls here?
Contributor
Author
There was a problem hiding this comment.
Actually, I didn't add it into config to avoid confusion as serviceUrl is optional if globalZookeeperServers is already present.
We have still kept clusterName in config because it is required by Authorization, and proxy fetches serviceUrl from zookeeper if globalZookeeperServers and clusterName is present.
Do you think, we should still keep serviceUrl by providing comment with short description as mentioned above?
Contributor
Author
There was a problem hiding this comment.
fixed. added serviceUrl and serviceUrlTls
saandrews
reviewed
Jan 20, 2017
Contributor
There was a problem hiding this comment.
Why have the same check twice? Intend to use config.getServiceUrlTls() ?
rdhabalia
force-pushed
the
proxy_zk
branch
2 times, most recently
from
f7a0c92 to
32153fb
Compare
sijie
added a commit
to sijie/pulsar
that referenced
this pull request
Mar 4, 2018
hrsakai
pushed a commit
to hrsakai/pulsar
that referenced
this pull request
Dec 10, 2020
Fixing a typo in a readme.md following changes done in apache#141
hangc0276
pushed a commit
to hangc0276/pulsar
that referenced
this pull request
May 26, 2021
**Fixes:** apache#166 apache#153 apache#99 **Issue:** KoP uses [Kafka-2.0.0](https://github.com/streamnative/kop/blob/78d9ba3487d4d7c85a5d667d45d9b38aaa7c824f/pom.xml#L46) which supports [API_VERSION's](https://kafka.apache.org/protocol.html#The_Messages_ApiVersions) **0** --> **2** When **_Kafka-Clients-2.4.x+_**(using `API_VERSION: 3`) connects to KoP, it panics and following error stack is observed: `10:22:23.281 [pulsar-io-22-4] ERROR io.streamnative.pulsar.handlers.kop.KafkaCommandDecoder - error to get Response ByteBuf: java.lang.IllegalArgumentException: Invalid version for API key API_VERSIONS: 3 at org.apache.kafka.common.protocol.ApiKeys.schemaFor(ApiKeys.java:312) ~[?:?] at org.apache.kafka.common.protocol.ApiKeys.responseSchema(ApiKeys.java:286) ~[?:?] at org.apache.kafka.common.requests.ApiVersionsResponse.toStruct(ApiVersionsResponse.java:129) ~[?:?] at org.apache.kafka.common.requests.ResponseUtils.serializeResponse(ResponseUtils.java:40) ~[?:?]` **Resolved By:** Returning an `UNSUPPORTED_VERSION` [error-code: 35](https://kafka.apache.org/protocol.html#protocol_error_codes), which would notify the **_kafka-client_** to lower it's `API_VERSION`. As no list of `ApiKeys & versions` were available for the **kafka-clients** to refer, it safely falls-back to using `API_VERSION: 0` and KoP continues processing the kafka-messages using `API_VERSION: 0`. **Tested producing/consuming with Kafka-Clients:** > 2.0.0 2.2.2 2.3.1 2.4.0 2.4.1 2.5.0 2.5.1 2.6.0 **More...** KoP could have returned the list of supported `ApiKeys & versions` while sending the `UNSUPPORTED_VERSION` error-code, which would have made the **_kafka-client_** select the **_latest_** supported `API_VERSION` and use `API_VERSION: 2` instead of falling all the way back and using `API_VERSION: 0` Notes on how **_Kafka-Brokers_** is supposed to handle this scenario: > 2. On receiving ApiVersionsRequest, a broker returns its full list of supported ApiKeys and versions regardless of current authentication state (e.g., before SASL authentication on an SASL listener, do note that no Kafka protocol requests may take place on an SSL listener before the SSL handshake is finished). If this is considered to leak information about the broker version a workaround is to use SSL with client authentication which is performed at an earlier stage of the connection where the ApiVersionRequest is not available. Also, note that broker versions older than 0.10.0.0 do not support this API and will either ignore the request or close connection in response to the request. > > 3. If multiple versions of an API are supported by broker and client, clients are recommended to use the latest version supported by the broker and itself. _Reference: [Kafka-Protocol Guide](https://kafka.apache.org/protocol.html#api_versions)_ We analyzed how various **_Kafka-Brokers_** respond to a similar situation where the **_kafka-client's_** `API_VERSION` is higher than what is supported by the **_Kafka-Broker_**.  _Reference: Wireshark packet captures - [Kafka-Protocol-Study.zip](https://github.com/streamnative/kop/files/5127018/Kafka-Protocol-Study.zip)_ From the study we can infer that, in a similar `API_VERSION` mismatch scenario the **_Kafka-Brokers_** doesn't return the list of supported `ApiKeys & versions` when notifying the **_kafka-client_** with the `UNSUPPORTED_VERSION` [error-code: 35](https://kafka.apache.org/protocol.html#protocol_error_codes). Thus, forcing the **_kafka-clients_** to fall-back to using `API_VERSION: 0`. To keep KoP working in sync with the **_Kafka-Broker_** working, we decided not to return the list of supported `ApiKeys & versions`.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Motivation
Provide a way to deploy websocket-proxy service independently without accessing globalZookeeper. Right now, proxy-service requires globalZK for
So, Websocket-Proxy-service should have configuration to disable authorization and get broker-service url from the config.
Modifications
Broker-service url can be configured at Websocket-proxy-service.
Result
Websocket-proxy can be deployed without accessing global-zookeeper.