`clone_from_bag` lets Rust code create a thread-safe `HashPropertyBag`
from any kind of `nsIPropertyBag` by cloning its contents. This is
important when you want to use a property bag that's passed to an XPIDL
method off the main thread. An `nsIPropertyBag` passed from JS isn't
thread-safe, since it's cycle-collected, and its properties are
`XPCVariant`s. But a Rust `HashPropertyBag` is, because it's backed by
a non-cycle collected `nsHashPropertyBag`, and the only supported
properties are thread-safe storage variants.
It also marks `HashPropertyBag` as `Send + Sync`, given that the only
way to construct one is through `HashPropertyBag::new`, and
`VariantType` is only implemented for storage variants.
Finally, it adds more type tags for string (narrow and wide) variants,
and changes the `VariantType for nsCString` getter to use
`GetAsAUTF8String`, since that's what mozStorage implements for its
text variant, not `GetAsACString`.
Differential Revision: https://phabricator.services.mozilla.com/D67075
--HG--
extra : moz-landing-system : lando
A low-frequency error that showed up in telemetry for new bookmark
sync is "Storage operation failed with NS_ERROR_CANNOT_CONVERT_DATA",
which occurs when we try to convert a variant to the wrong type. It
would be helpful to include the type and column names for this case;
for example, "Can't get i32 for column lastModified". Neither the type
nor column name are PII; we want them to show up in telemetry.
Differential Revision: https://phabricator.services.mozilla.com/D46433
--HG--
extra : moz-landing-system : lando
This commit wraps just enough of the mozStorage API to support the
bookmarks mirror. It's not complete: for example, there's no way
to open, clone, or close a connection, because the mirror handles
that from JS. The wrapper also omits shutdown blocking and retrying on
`SQLITE_BUSY`.
This commit also changes the behavior of sync and async mozStorage
connections. Async (`mozIStorageAsyncConnection`) methods may be called
from any thread on any connection. Sync (`mozIStorageConnection`)
methods may be called from any thread on a sync connection, and from
background threads on an async connection. All connections now QI
to `mozIStorageConnection`, but attempting to call a sync method on
an async connection from the main thread throws.
Finally, this commit exposes an `OpenedConnection::unsafeRawConnection`
getter in Sqlite.jsm, for JS code to access the underlying connection.
Differential Revision: https://phabricator.services.mozilla.com/D20073
--HG--
extra : moz-landing-system : lando
This commit adds a `storage_variant::HashPropertyBag` type that
exposes an idiomatic Rust interface for `nsIWritablePropertyBag`.
Differential Revision: https://phabricator.services.mozilla.com/D21062
--HG--
extra : moz-landing-system : lando
Lina Cambridge
Sylvestre Ledru
Mike Hommey
Nika Layzell
Gurzau Raul
Myk Melez