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I have a macOS xcode project and I would like to include IBM Kafka in to my project as a framework and use it. How can I achieve this?

Otherwise, everything looks okay so far.

Getting Error while adding SwiftKafka using Package Manager in Swift . Got Error like Undefined Symbol . I have to added target in Targets array in package manage package file but still getting error.

Hi, I've been trying to use SwiftKafka for a project of mine, but run into an issue when sending messages of around 1.5KB. Instead of the JSON I try to send, it sends some malformed data like this:

2t_id":"16315612"??????

followed by the rest of the JSON in the correct format. Because of this the JSON becomes invalid and unusable.

I've tried multiple config options to increase buffer sizes to allow for bigger messages, but so far nothing has seemed to work. The options I've tried is setting

config.messageMaxBytes = 1000000000
config.socketAendBufferBytes = 1000000000

If I do this however, the message is still malformed and I get the following error in my console:

Failed to set socket send buffer size to 10000000: No buffer space available

Any and all help is much appreciated!

Attempting to run SwiftKafkaTests on macOS target is resulting in a build error:

ld: warning: Could not find or use auto-linked library 'rdkafka'

...(all the librdkafka C API calls listed here)...

ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

What's interesting is that it seems Xcode's package loading is failing to find rdkafka even before I attempt to compile showing this warning message:

You may be able to install rdkafka using your system package manager: brew install librdkafka

This is despite the fact that I'm absolutely positive librdkafka is installed.

rami@machine: ~ % brew info librdkafka
librdkafka: stable 1.5.2 (bottled), HEAD
Apache Kafka C/C++ library
https://github.com/edenhill/librdkafka
/usr/local/Cellar/librdkafka/1.5.2 (36 files, 4MB) *
  Poured from bottle on 2020-11-24 at 21:53:28
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/librdkafka.rb
License: BSD-2-Clause
==> Dependencies
Build: pkg-config ✔, [email protected] ✔
Required: lz4 ✔, lzlib ✔, [email protected] ✔, zstd ✔
==> Options
--HEAD
	Install HEAD version
==> Analytics
install: 9,191 (30 days), 19,972 (90 days), 71,599 (365 days)
install-on-request: 5,667 (30 days), 11,336 (90 days), 35,858 (365 days)
build-error: 0 (30 days)

Config details

macOS Big Sur 11.0.1 (20B29)
Xcode 12.2 (12B45b) + Command Line Tools 12B45b
Swift version 5.3.1
clang version 12.0.0

Homebrew 2.5.11
Homebrew/homebrew-core (git revision 699c9; last commit 2020-11-25)
Homebrew/homebrew-cask (git revision 18071; last commit 2020-11-25)
librdkafka stable 1.5.2

I am developing a watchOS app, that uses data coming from a Kafkastream and I want to use this library for this purpose, but it keeps ignoring my local "librdkafka" library.

Detailed error description:

• Warnings:

1. ignoring file /usr/local/Cellar/librdkafka/1.3.0/lib/librdkafka.dylib, building for watchOS-arm64_32 but attempting to link with file built for macOS-x86_64

• Errors:
  Undefined symbol: _rd_kafka_produce
  Undefined symbol: _rd_kafka_poll
  Undefined symbol: _rd_kafka_conf_dump
  Undefined symbol: _rd_kafka_topic_name
  Undefined symbol: _rd_kafka_consumer_close
  Undefined symbol: _rd_kafka_consumer_poll
  Undefined symbol: _rd_kafka_flush
  Undefined symbol: _rd_kafka_brokers_add
  Undefined symbol: _rd_kafka_commit
  Undefined symbol: _rd_kafka_topic_partition_list_new
  Undefined symbol: _rd_kafka_topic_partition_list_destroy
  Undefined symbol: _rd_kafka_message_destroy
  Undefined symbol: _rd_kafka_topic_new
  Undefined symbol: _rd_kafka_topic_partition_list_add
  Undefined symbol: _rd_kafka_subscribe
  Undefined symbol: _rd_kafka_conf_set_dr_msg_cb
  Undefined symbol: _rd_kafka_conf_set
  Undefined symbol: _rd_kafka_conf_dup
  Undefined symbol: _rd_kafka_conf_new
  Undefined symbol: _rd_kafka_conf_destroy
  Undefined symbol: _rd_kafka_conf_dump_free
  Undefined symbol: _rd_kafka_poll_set_consumer
  Undefined symbol: _rd_kafka_topic_destroy
  Undefined symbol: _rd_kafka_assign
  Undefined symbol: _rd_kafka_new
  Undefined symbol: _rd_kafka_destroy

What I did:

1. Installed librdkafka

• brew install librdkafka

2. Created app

• Created a new watchOS standalone app in Xcode
• Added a new SwiftPackage with the built-in SPM from Xcode using the URL from your GitHub SwiftKafka project
• Added SwiftKafka to "Link Binary With Libraries" in my WatchKit Extension

3. Build the App -> Build failed with above errors

I have added the following config property in my Swift file.

config["bootstrap.servers"] = "localhost:9092"

I tested the property using breakpoint, and it is successfully reflected.

(lldb) po config["bootstrap.servers"]
▿ Optional<String>
  - some : "localhost:9092"

However, I still get the following warning and producer messages do not pass through.

%5|1667541464.556|CONFWARN|rdkafka#producer-1| [thrd:app]: No `bootstrap.servers` configured: client will not be able to connect to Kafka cluster