sqlite3 was forgiving, postgres isn't, so let's make sure we use the strictest
field type possible, relaxing when rewriting.
The commit consists just of the following mapping
- INTEGER -> BIGSERIAL if it is the primary key
- INTEGER -> BIGINT if it is an amount or a reference to a primary key
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This was already done in `db_step` but `db_count_changes` and
`db_last_insert_id` also rely on the statement being executed. Furthermore we
now check that the statement was executed before freeing it, so it can't
happen that we dispose of a statement we meant to execute but forgot.
The combination of these could be used to replace the pending_statement
tracking based on lists, since we now make sure to execute all statements and
we use the memleak checker to make sure we don't keep a statement in memory.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
sqlite3 doesn't really do any validation whatsoever, and there is no
difference between 64bit and 32bit numbers. Posgtres on the other hand gets
very upset if the size doesn't match.
This commit swaps out handwavy types with the ones that should be there :-)
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This was weird right from the start, so we just split the table into integers
and blobs, so each column has a well-defined format. It is also required for
postgres not to cry about explicit casts in the `paramTypes` array.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
The first ever query to check if the version DB exists may fail. We allow
this, but we need to restart the DB transaction since postgres fails the
current transaction and rolls back any changes.
This just commits (and fails) and starts a new transaction so the rest of the
migration can continue.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Needed to change a couple of migrations. The changes are mostly innocuous:
- changing BLOB to TEXT for short_channel_ids which is the correct type
anyway, and sqlite3 treats them the same anyway.
- Use `int` for version since the byte representation is checked by postgres.
- Change anything that is INT, but will be bound to u64 to BIGINT (again
postgres checks these more carefully than sqlite3).
Two migrations were replaced with dummy values, since they are buried deep
enough, and I found no portable way of expressing `strftime()` and `INSERT OR
IGNORE`.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Using a generated identifier with filename and line proved to be brittle since
compilers assign the __LINE__ macro differently on multi-line macro
invocations.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is dangerous but needed since postgres is not as forgiving about
unsatisfied foreign key constraints even while in a DB transaction.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We used to do some of the setup work in db.c, which is now free of any
sqlite3-specific code. In addition we also switch over to fully qualified DSNs
to specify the location of the wallet.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We're about to remove them.
Includes fix to sqlite3_bind_short_channel_id to not assume `id` is a
tal object.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now that all the users are migrated to the abstraction layer we can remove the
legacy implementation.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
It's better to let the driver decide when and how to expand. It can then
report the expanded statement back to the dispatch through the
`db_changes_add` function.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We now have a much stronger consistency check from the combination of
transaction wrapping, tal memory leak detection. Tramsaction wrapping ensures
that each statement is executed before the transaction is committed. The
commit is also driven by the `io_loop`, which means that it is no longer
possible for us to have statements outside of transactions and transactions
are guaranteed to commit at the round's end.
By adding the tal-awareness we can also get a much better indication as to
whether we have un-freed statements flying around, which we can test at the
end of the round as well.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is likely the last part we need to completely encapsulate the part of the
sqlite3 API that we were using. Like the `db_count_changes` call I decided to
pass in the `struct db_stmt` since really they refer to the statement that was
executed and not the db.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
These are based on top of the basic column access functions, and act as a
small type-safe wrapper, that also does a bit of validation.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This has a slight side-effect of removing the actual begin and commit
statements from the `db_write` hooks, but they are mostly redundant anyway (no
harm in grouping pre-init statements into one transaction, and we know that
each post-init call is supposed to be wrapped anyway).
Signed-off-by: Christian Decker <decker.christian@gmail.com>
These are used to do one-time initializations and wait for pending statements
before closing.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
I was hoping to get rid of these by using "ON CONFLICT" upserts, however
sqlite3 only started supporting them in version 3.24.0 which is newer than
some of our deployment targets.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is the first step towards being able to extract information from query
rows. Only the most basic types are exposed, the others will be built on top
of these primitives.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
For some of the query methods in the next step we need to have an idea of
whether the stmt was executed (db_step function) so let's track that
explicitly.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
These do not require the ability to iterate over the result, hence they can be
migrated already.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
These functions implement the lookup of the query, and the dispatch to the
DB-specific functions that do the actual heavy lifting.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
All drivers will have to reach into it, so put it in a place that is reachable
from the drivers, along with all other definitions.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is the counterpart of the annotations we did in the last few commits. It
extracts queries, passes them through a driver-specific query rewriter and
dumps them into a driver-specific query-list, along with some metadata to
facilitate processing later on. The generated query list is then registered as
a `db_config` and will be loaded by the driver upon instantiation.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We will soon generalize the DB, so directly reaching into the `struct db`
instance to talk to the sqlite3 connection is bad anyway. This increases
flexibility and allows us to tailor the actual implementation to the
underlying DB.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
`db_select_prepare` was prepending the "SELECT" part in an attempt to limit
its use to read-only statements. This is leads to the queries in the code not
actually being well-formed, which we'll need in a later commit, and was also
resulting in extra allocations. This switches the behavior to just enforce a
"SELECT" prefix being present which allows us to have well-formed queries in
the code again and avoids the extra allocation.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We need to have full DB queries that can be extracted at compile time later in
order to be able to rewrite them in other SQL dialects. In addition we had a
bit of unnecessary code-duplication in db_select and db_select_prepare. Now
the former uses the latter internally.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Dumb programs which have a --daemon option call fork() early. This is
terrible UX since startup errors get lost: the program exits with
"success" immediately then you discover via the logs that it didn't
start at all.
However, forking late introduced a heap of problems with changing
pids. Instead, fork early but keep stderr and the parent around: if
we fail early on, the parent fails with us. We release our parent
with an explicit action just before the main loop.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
These are generalized from our internal implementations.
The main difference is that 'struct json_escaped' is now 'struct
json_escape', so we replace that immediately.
The difference between lightningd's json-writing ringbuffer and the
more generic ccan/json_out is that the latter has a better API and
handles escaping transparently if something slips through (though
it does offer direct accessors so you can mess things up yourself!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Mainly used to differentiate channel-related transactions from on-chain wallet
transactions. Will be used to filter `listtransaction` results and bundle
transactions that belong to the same channel.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
We'd like to display the receive and resolution times in the forwardings
table. In order to remember the receive time we need to store it in the DB
along with the other information.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Node ids are pubkeys, but we only use them as pubkeys for routing and checking
gossip messages. So we're packing and unpacking them constantly, and wasting
some space and time.
This introduces a new type, explicitly the SEC1 compressed encoding
(33 bytes). We ensure its validity when we load from the db, or get it
from JSON. We still use 'struct pubkey' for peer messages, which checks
validity.
Results from 5 runs, min-max(mean +/- stddev):
store_load_msec,vsz_kb,store_rewrite_sec,listnodes_sec,listchannels_sec,routing_sec,peer_write_all_sec
39475-39572(39518+/-36),2880732,41.150000-41.390000(41.298+/-0.085),2.260000-2.550000(2.336+/-0.11),44.390000-65.150000(58.648+/-7.5),32.740000-33.020000(32.89+/-0.093),44.130000-45.090000(44.566+/-0.32)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
Christian Decker
trueptolemy
ZmnSCPxj