Get Reader Id from AisMessage about aislib HOT 9 CLOSED

Hi Malte,

You can only get it from an AisPacket (Which encapsulates an AisMessage)
The whole source id thing is a non-standard but we use internally to distinguish between AIS data that comes in from different data sources.

from aislib.

You can see here, how we tag the AisPacket

https://github.com/dma-ais/AisLib/blob/master/ais-lib-communication/src/main/java/dk/dma/ais/reader/AisReader.java#L292

Use AisPacket.getPacketTags().getSourceId() to get it

from aislib.

Exactly, I do the same... :)

I have hacked get/set SourceId into AisMessage and set them in AisReader - works...
So I can do aisMessage.getSourceId() in MessageHandler...

Any chance to get this merged in master?

Thanks for the quick reply! Greeting from Bremen 👍

mablae

from aislib.

AisPacket and AisMessage is layered much like, for example tcp/ip .
AisPacket contains all the metadata (tcp/ip header) + Ais Message (the payload).
AisMessage is strictly stuff that is in the AIS specification (payload).

Don't know if its clear?

Maybe you want to use AisPacket instead in those places?

from aislib.

The thing is that I need the Douplet Filter - That is only for AisMessages...

After that in my message handler I push the decoded message to a RabbitMq broker as a JSON Object. Then some other process fetches the messages from Rabbit and inserts them into Database.

I use RabbitMq as some Kind of "buffer"

from aislib.

Are you talking about dk.dma.ais.filter.DuplicateFilter?
Because it extends MessageFilterBase which both implements IPacketFilter and IMessageFilter

from aislib.

Oh, maybe I just need to dig deeper then. Thanks for your help!

from aislib.

No worries, let me know if you have any questions

from aislib.

Hey,

I refactored my code to do the casting to AisMessage after filtering in one AisPacket Consumer.

It works perfect! Thanks again. 👍

from aislib.