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Under Consideration: Migrate the Forums to Discourse


 
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The Lounge What is on Your Mind? Under Consideration: Migrate the Forums to Discourse
# 8  
OK... after seeing the results of about 40% of the main topics / threads (before the replies / posts are uploaded):

Code:
importing topics...
    95440 / 240477 ( 39.7%)  [414 items/min

I can see two problems:
  • The CODE and ICODE tags seems to not be ported into discourse.
  • The "not parent" categories of forums (child forums) are not getting moved into the new DB and case an "error".

So, current way ahead is looking like:
  • Continue to let the migration process run until finished.
  • Study the results and at least do the following:

  1. Move avatars to the DUMPED DB before DUMPING, so the AVATARS will port (maybe).
  2. DUMP the Forum DB again.
  3. Do a search and replace in the DB (DUMPED VERSION) and change all CODE tags to ``` (markdown three back ticks).
  4. Ditto for the ICODE tags, convert the all to ``` for markdown ; but I am not sure 100% this will work, but we can try.
  5. Change all forums to "parent, top level forums" in the DUMPED DB, so we I import again, they will work (not be children to parents).

Something like that.....

Looks like the CODE tags are just getting stripped out of the migration. Need to confirm when we get back up to 2019 / 2020 time frame. Right now the migrations is in the 2009 time frame.

This is what is looks like so far..... take lessons learned from this migration, make adjustments, and do it again.
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# 9  
Nice to watch and read the progress.

10 hours is a hell of a roundtrip time. Maybe 1000 or 10000 posts are enough per try ;-).
# 10  
Update:

Looks like the CODE tags are migrating OK, better than I thought looking at the earlier results... that is a big (and very good) surprise. I am however seeing other BBCODE tags not working (some custom and some basic) but at least they are being transferred and not stripped out, so we can deal with this easy enough later. This is very encouraging.

During topics / threads migration, there were a few errors

Code:
   201290 / 240477 ( 83.7%)  [412 items/min]  Exception while creating post thread-243715. Skipping......

Code:
   201308 / 240477 ( 83.7%)  [411 items/min]  Exception while creating post thread-243734. Skipping. .............

Code:
   201335 / 240477 ( 83.7%)  [411 items/min]  Exception while creating post thread-243762. Skipping............


and so that part of the topic migration ended up:

Code:
   239384 / 240477 ( 99.5%)  [400 items/min]

Not bad for a first run.

Now, the status is:

Code:
importing posts...
   112634 / 651396 ( 17.3%)  [607 items/min]

Estimated time to completion of posts (only posts part): 15 Hours

Example of one of the three "topic errors":

Code:
   201335 / 240477 ( 83.7%)  [411 items/min]  Exception while creating post thread-243762. Skipping.
PG::InFailedSqlTransaction: ERROR:  current transaction is aborted, commands ignored until end of transaction block
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.6/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.6/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:672:in `block (2 levels) in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/concurrency/share_lock.rb:187:in `yield_shares'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies/interlock.rb:47:in `permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:671:in `block in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:718:in `block (2 levels) in log'
/usr/local/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:717:in `block in log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:708:in `log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:670:in `exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:651:in `execute_and_clear'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:111:in `exec_delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:180:in `delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/query_cache.rb:22:in `delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/relation.rb:576:in `delete_all'
/var/www/discourse/app/models/topic_link.rb:285:in `cleanup_entries'
/var/www/discourse/app/models/topic_link.rb:139:in `extract_from'
/var/www/discourse/lib/post_creator.rb:572:in `extract_links'
/var/www/discourse/lib/post_creator.rb:180:in `block in create'
/var/www/discourse/lib/post_creator.rb:359:in `block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_transaction'
/usr/local/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/transactions.rb:212:in `transaction'
/var/www/discourse/lib/post_creator.rb:358:in `transaction'
/var/www/discourse/lib/post_creator.rb:174:in `create'
/var/www/discourse/script/import_scripts/base.rb:567:in `create_post'
/var/www/discourse/script/import_scripts/base.rb:515:in `block in create_posts'
/var/www/discourse/script/import_scripts/base.rb:502:in `each'
/var/www/discourse/script/import_scripts/base.rb:502:in `create_posts'
script/import_scripts/vbulletin.rb:330:in `block in import_topics'
/var/www/discourse/script/import_scripts/base.rb:882:in `block in batches'
/var/www/discourse/script/import_scripts/base.rb:881:in `loop'
/var/www/discourse/script/import_scripts/base.rb:881:in `batches'
script/import_scripts/vbulletin.rb:313:in `import_topics'
script/import_scripts/vbulletin.rb:85:in `execute'
/var/www/discourse/script/import_scripts/base.rb:47:in `perform'
script/import_scripts/vbulletin.rb:944:in `<main>'

# 11  
For those interested; here is a markdown cheatsheet:

Markdown Cheatsheet . adam-p/markdown-here Wiki . GitHub

I used this cheat sheet to add some simple code to transform ICODE , MOD and NOPARSE tags, like this:

Under Consideration:  Migrate the Forums to Discourse-screen-shot-2020-03-10-112121-amjpg


But will need to run the migration again from scratch (or learn how to rake or otherwise modify the DB in discourse) after I figure out all the custom Ruby code I need to add to the migration script.

However, I'm learning Ruby a little bit now, something I never thought I would every do.
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# 12  
To me perfectly honest, this is actually pretty easy to do (technically speaking), and I think I can easily improve and customize this migration script with a few iterations.
# 13  
Note:

Some discourse plugins like this one might work for COLOR:

GitHub - discourse/discourse-bbcode-color: A Discourse Plugin to support BBCode color tags.

And perhaps this some for some subset of other BBCODE tags:

GitHub - discourse/discourse-bbcode: vBulletin BBCode plugin
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# 14  
A few more small errors cropped up:

Code:
   152569 / 651396 ( 23.4%)  [581 items/min]     201335 / 240477 ( 83.7%)  [411 items/min]  Exception while creating post thread-243762. Skipping.
PG::InFailedSqlTransaction: ERROR:  current transaction is aborted, commands ignored until end of transaction block
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.6/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/rack-mini-profiler-1.1.6/lib/patches/db/pg.rb:69:in `exec_params'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:672:in `block (2 levels) in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/concurrency/share_lock.rb:187:in `yield_shares'
   152570 / 651396 ( 23.4%)  [581 items/min]  :47:in `permit_concurrent_loads'e_support/dependencies/interlock.rb
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:671:in `block in exec_no_cache'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:718:in `block (2 levels) in log'
/usr/local/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:717:in `block in log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activesupport-6.0.1/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract_adapter.rb:708:in `log'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:670:in `exec_no_cache'
   152571 / 651396 ( 23.4%)  [581 items/min]  ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql_adapter.rb:651:in `execute_and_clear'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:111:in `exec_delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:180:in `delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/query_cache.rb:22:in `delete'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/relation.rb:576:in `delete_all'
/var/www/discourse/app/models/topic_link.rb:285:in `cleanup_entries'
/var/www/discourse/app/models/topic_link.rb:139:in `extract_from'
/var/www/discourse/lib/post_creator.rb:572:in `extract_links'
/var/www/discourse/lib/post_creator.rb:180:in `block in create'
   152572 / 651396 ( 23.4%)  [581 items/min]  action'in trans
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `block in transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:280:in `block in within_new_transaction'
/usr/local/lib/ruby/2.6.0/monitor.rb:235:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:278:in `within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:281:in `transaction'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/activerecord-6.0.1/lib/active_record/transactions.rb:212:in `transaction'
/var/www/discourse/lib/post_creator.rb:358:in `transaction'
/var/www/discourse/lib/post_creator.rb:174:in `create'

But overall, still going OK:

Code:
 200362 / 651396 ( 30.8%)  [586 items/min]


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