Commit Graph

64 Commits

Author SHA1 Message Date
Shlomi Noach
54c6d059b5 - quick-and-bumpy-swap-tables uses quicker swap tables, at the expense of a period where the table does not exist (non atomic renames)
- refactored lock-and-swap code, in preparation for atomic swap
2016-04-22 13:18:56 -07:00
Shlomi Noach
eeffa701d6 - Added ok-to-drop-table flag
- Added `switch-to-rbr` flag; applying binlog format change if needed
- Using dedicated db instance for locking & renaming on applier (must be used from within same connection)
- Heartbeat now uses `time.RFC3339Nano`
- Swap tables works! Caveat: short table outage
- `--test-on-replica` works!
- retries: using `panicAbort`: from any goroutine, regardless of context, it is possible to terminate the operation
- Reintroduced changelog events listener on streamer. This is the correct implementation.
2016-04-18 10:57:18 -07:00
Shlomi Noach
a4ee80df13 - Building and applying queries from binlog event data!
- `INSERT`, `DELETE`, `UPDATE` statements
- support for `--noop`
- initial support for `--test-on-replica`. Verifying against `--allow-on-master`
- Changelog events no longer read from binlog stream, because reading it may be throttled, and we have to be able to keep reading the heartbeat and state events.
  They are now being read directly from table, mapping already-seen-events to avoid confusion
  Changlelog listener pools table in 2*frequency of heartbeat injection
2016-04-14 13:37:56 +02:00
Shlomi Noach
04525887f3 - Throttling-check is now an async routine running once per second
- Throttling variables protected by mutex
- Added `--throttle-additional-flag-file`: `operation pauses when this file exists; hint: keep default, use for throttling multiple gh-osc operations`
- ColumnList is not a `struct` which contains ordinal mapping
- More implicit write changelog + audit changelog
- builder now builds `DELETE` and `INSERT` queries from data it will eventually get from DML event
- Sanity check for binlog_row_image
- Restarting replication to be sure binlog settings apply
- Prepare for accepting `SIGHUP` (reloading configuration)
2016-04-11 17:27:16 +02:00
Shlomi Noach
a1a34b8150 ongoing development:
- accepts --max-load
- accepts multiple conditions in --max-load
- throttle includes reason
- chunk-size sanity check
- change log state writes both in appending (history) mode and in replacing (current) mode
- more atomic checks
- inspecting ghost table columns, unique key
- comparing unique keys between tables; sanity
- intersecting columns between tables
- prettify status
- refactored throttle() and retries()
2016-04-08 14:35:06 +02:00
Shlomi Noach
75f68c0752 - row copy and row events are now handled by a single routine which prioritizes events over rowcopy
- Supporting `--throttle-file-flag`
- Printing status
- Supporting transactional table syntax
- code cleanup; refactoring
- proper use of atomic where required
- iterations are in changelog (erm... maybe too much)
- `LOCK TABLES`, `UNLOCK TABLES` working
2016-04-08 10:34:44 +02:00
Shlomi Noach
0e7b23e6fe - Creating an populating Changelog table
- Using heartbeat
- Throttling works based on heartbeat
- Refactored binlog_reader stuff. Now streaming events (into golang channel, which makes for nice buffering and throttling)
- Binlog table listeners work
- More Migrator logic; existing logic for waiting on `state` events (e.g. `TablesCreatedState`)
2016-04-07 15:57:12 +02:00
Shlomi Noach
ea0906f4e5 reading table (range) min/max values, right now according to hardcoded unique key 2016-04-04 18:19:46 +02:00
Shlomi Noach
cf87d16044 detecting master (includes sanity checks). Introducing Applier. Creating and altering ghost table 2016-04-04 15:29:02 +02:00
Shlomi Noach
c75cd998fb a bunch of 'inspector' initial tests on the replica 2016-04-04 12:27:51 +02:00
Shlomi Noach
8f3d13e071 still experimenting, yes? go-mysql binlog parser looks good 2016-03-30 15:43:40 +02:00
Shlomi Noach
96a8fd50c3 minor refactoring; fixed license comments 2016-03-24 15:11:56 +01:00
Shlomi Noach
e36bb51b69 initial seems-to-be-working parser for binary logs, which reads log pos, end log pos, statement type, schema and table. Performs some validations along the way. Reads in chunks of up to 32M per chunk 2016-03-23 12:40:17 +01:00
Shlomi Noach
bb1c6dae30 adding initial bunch of code 2016-03-21 15:57:01 +01:00