CODEWITHSUNDEEP
thingsboard
skangmy
skangmy

Reputation: 117

How to remove old events from Thingsboard?

What should I do to properly remove 'event' entries from Thingsboard?

As far as I know, the current API does not provide a way to remove events. It seems like the only way is to directly delete the records in DB.

By the way, I'm using PostgreSQL as DB.

Upvotes: 7

Views: 4182

Answers (2)

David Dorchies
David Dorchies

Reputation: 354

After two hours of research in Thingsboard source code, I found the solution.

The date is contained in the uid_event field in V1 UUID format.

So first, you need to write a function uuid_timestampin order to convert the UUID to a timestamp. I found the solution, here: https://stackoverflow.com/a/24191574/5300212 

CREATE FUNCTION uuid_timestamp(id uuid) RETURNS timestamptz AS $$
  select TIMESTAMP WITH TIME ZONE 'epoch' +
      (((('x' || lpad(split_part(id::text, '-', 1), 16, '0'))::bit(64)::bigint) +
      (('x' || lpad(split_part(id::text, '-', 2), 16, '0'))::bit(64)::bigint << 32) +
      ((('x' || lpad(split_part(id::text, '-', 3), 16, '0'))::bit(64)::bigint&4095) << 48) - 122192928000000000) / 10000000 ) * INTERVAL '1 second';    
$$ LANGUAGE SQL
  IMMUTABLE
  RETURNS NULL ON NULL INPUT;

After that, to delete all events older than 30 days ago, you can run a query like: 

DELETE FROM public.event WHERE uuid_timestamp(event_uid::uuid) < now() - '30 days'::interval;

Upvotes: 6

Andrew
Andrew

Reputation: 732

Your assumption is correct. You will need to execute a SQL script to cleanup the "events" table. I must note that for Cassandra DB we already have "cassandra.query. ts_key_value_ttl" and "cassandra.query.events_ttl" configuration parameter to automate this process.

Upvotes: 0

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