private static string GetKafkaKey(ProducerPipelineContext context)
{
string?kafkaKeyHeaderValue = context.Envelope.Headers.GetValue(KafkaMessageHeaders.KafkaMessageKey);
if (kafkaKeyHeaderValue != null)
{
return(kafkaKeyHeaderValue);
}
string?keyFromMessage = KafkaKeyHelper.GetMessageKey(context.Envelope.Message);
if (keyFromMessage != null)
{
return(keyFromMessage);
}
var messageIdHeaderValue = context.Envelope.Headers.GetValue(DefaultMessageHeaders.MessageId);
if (messageIdHeaderValue != null)
{
return(messageIdHeaderValue);
}
return(Guid.NewGuid().ToString());
}
public void MessagesWithoutKey()
{
for (int i = 0; i < MessageCount; i++)
{
_ = KafkaKeyHelper.GetMessageKey(_messageWithoutKeys[i]);
}
}
public void GetMessageKey_NullMessage_NullIsReturned()
{
object?message = null;
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().BeNull();
}
public void GetMessageKey_MessageWithoutProperties_NullIsReturned()
{
object message = new { };
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().BeNull();
}
public void MessagesWithSimpleKeyButNoValue()
{
for (int i = 0; i < MessageCount; i++)
{
MessageWithSimpleKey message = _messageWithSimpleKeys[i];
message.MyKey = string.Empty;
_ = KafkaKeyHelper.GetMessageKey(message);
}
}
private void SetPartitioningKey(IOutboundMessage outboundMessage)
{
var key = KafkaKeyHelper.GetMessageKey(outboundMessage.Content);
if (key == null)
{
return;
}
outboundMessage.Headers.AddOrReplace(KafkaProducer.PartitioningKeyHeaderKey, key);
}
public void GetMessageKey_MultipleKeyMembersMessage_NullIsReturned_WhenNullValues()
{
var message = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = null,
Two = null,
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().BeNull();
}
public void GetMessageKey_SingleKeyMemberMessage_EmptyKeyResultsInNull()
{
var message = new SingleKeyMemberMessage
{
Id = Guid.NewGuid(),
One = string.Empty,
Two = "2",
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().BeNull();
}
public void GetMessageKey_SingleKeyMemberMessage_PropertyValueIsReturned()
{
var message = new SingleKeyMemberMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = "2",
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().Be("1");
}
public void GetMessageKey_NoKeyMembersMessage_NullIsReturned()
{
var message = new NoKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = "2",
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().BeNull();
}
public void GetMessageKey_MultipleKeyMembersMessagesWithOneKeyEmpty_OneKeyIsReturned()
{
var message = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = string.Empty,
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().Be("One=1");
}
public void GetMessageKey_MultipleKeyMembersMessagesSecondEmpty_ComposedKeyIsReturned()
{
var message = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = string.Empty,
Two = "2",
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().Be("Two=2");
}
public void GetMessageKey_MultipleKeyMembersMessagesWithSameKey_ComposedKeyIsReturned()
{
var message = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = "2",
Three = "3"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().Be("One=1,Two=2");
}
public void GetMessageKey_LegacyKeyMemberAttribute_PropertyValueIsReturned()
{
var message = new LegacyKeyMemberAttributeMessage
{
Id = Guid.NewGuid(),
One = "11",
Two = "22",
Three = "33"
};
var key = KafkaKeyHelper.GetMessageKey(message);
key.Should().Be("11");
}
public void GetMessageKey_DifferentMessagesMixture_CorrectKeyIsReturned()
{
// This is actually to test the cache.
var message1 = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = "2",
Three = "3"
};
var message2 = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = "2",
};
var message3 = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = "1",
Two = string.Empty,
};
var message4 = new MultipleKeyMembersMessage
{
Id = Guid.NewGuid(),
One = null,
Two = "2"
};
var key1 = KafkaKeyHelper.GetMessageKey(message1);
var key2 = KafkaKeyHelper.GetMessageKey(message2);
var key3 = KafkaKeyHelper.GetMessageKey(message3);
var key4 = KafkaKeyHelper.GetMessageKey(message4);
key1.Should().Be("One=1,Two=2");
key2.Should().Be("One=1,Two=2");
key3.Should().Be("One=1");
key4.Should().Be("Two=2");
}