We want to convert NetworkController to TypeScript in order to be able
to compare differences in the controller between in this repo and the
core repo. To do this, however, we need to convert the dependencies of
the controller to TypeScript.
As a part of this effort, this commit converts
`shared/constants/metametrics` to TypeScript. Note that simple objects
have been largely replaced with enums. There are some cases where I even
split up some of these objects into multiple enums.
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
The `network` store of the network controller crams two types of data
into one place. It roughly tracks whether we have enough information to
make requests to the network and whether the network is capable of
receiving requests, but it also stores the ID of the network (as
obtained via `net_version`).
Generally we shouldn't be using the network ID for anything, as it has
been completely replaced by chain ID, which all custom RPC endpoints
have been required to support for over a year now. However, as the
network ID is used in various places within the extension codebase,
removing it entirely would be a non-trivial effort. So, minimally, this
commit splits `network` into two stores: `networkId` and
`networkStatus`. But it also expands the concept of network status.
Previously, the network was in one of two states: "loading" and
"not-loading". But now it can be in one of four states:
- `available`: The network is able to receive and respond to requests.
- `unavailable`: The network is not able to receive and respond to
requests for unknown reasons.
- `blocked`: The network is actively blocking requests based on the
user's geolocation. (This is specific to Infura.)
- `unknown`: We don't know whether the network can receive and respond
to requests, either because we haven't checked or we tried to check
and were unsuccessful.
This commit also changes how the network status is determined —
specifically, how many requests are used to determine that status, when
they occur, and whether they are awaited. Previously, the network
controller would make 2 to 3 requests during the course of running
`lookupNetwork`.
* First, if it was an Infura network, it would make a request for
`eth_blockNumber` to determine whether Infura was blocking requests or
not, then emit an appropriate event. This operation was not awaited.
* Then, regardless of the network, it would fetch the network ID via
`net_version`. This operation was awaited.
* Finally, regardless of the network, it would fetch the latest block
via `eth_getBlockByNumber`, then use the result to determine whether
the network supported EIP-1559. This operation was awaited.
Now:
* One fewer request is made, specifically `eth_blockNumber`, as we don't
need to make an extra request to determine whether Infura is blocking
requests; we can reuse `eth_getBlockByNumber`;
* All requests are awaited, which makes `lookupNetwork` run fully
in-band instead of partially out-of-band; and
* Both requests for `net_version` and `eth_getBlockByNumber` are
performed in parallel to make `lookupNetwork` run slightly faster.
Currently, the network controller notifies consumers about events by
emitting them directly from the controller. In order to migrate the
controller to the core repo, where controllers use the BaseControllerV2
interface, events should be emitted via a messenger object.
This commit updates the network controller to use a messenger, and then
updates all of the controllers that listen for network events to use the
messenger as well.
* Revert "Moved subscribe and filter into network controller (#16693)"
This reverts commit 6f6984fa58. That
commit was an RPC middleware refactor intended to move the subscribe
and filter middleware into the network controller, to simplify the
process of sharing this middleware between clients.
This refactor resulted in `eth_subscribe` notifications being sent on
the wrong connections, causing the UI to break in some cases (the UI
`provider` connection does not support notifications). This happened
because the `setupProviderEngine` function runs per-connection,
whereas the engine setup inside the network controller is global. The
global network client cannot support notifications because it has no
way to route them; they'll need to stay in the per-connection provider
engine.
Closes#17467
* Add e2e test
An e2e test has been added that confirms subscriptions are only
broadcast to the site that registered them. This test fails on
`develop`.
This release only includes one breaking change, which is the renaming
of the package to be under the `@metamask` scope. It includes
improvements to the types that will unblock migrating our network
clients to TypeScript.
The network controller has a variety of methods that just retrieve
controller state. These methods are not necessary because controller
state is already part of the public API of the controller and can be
accessed directly.
These methods are:
- getCurrentChainId
- getCurrentRpcUrl
- getNetworkIdentifier
- getNetworkState
- getProviderConfig
- isNetworkLoading
This is part of a larger effort to normalize the API of both network
controllers, to make them easier to merge.
The network controller has some tests, but they are incomplete and don't
follow our latest best practices for writing unit tests.
This commit greatly increases the amount of test coverage for the API
that we want to retain in NetworkController, in particular the seemingly
myriad paths that the code takes starting from `initializeProvider`,
`resetConnection`, `setRpcTarget`, `setProviderType`,
`rollbackToPreviousProvider`, and `lookupNetwork`.
There were a couple of pieces of logic I noted which don't seem to have
any effect due to being redundant or unreachable, but they also don't
make our lives more difficult, either, so I opted to leave them in.
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
Co-authored-by: Zachary Belford <belfordz66@gmail.com>
The network controller unit test network mocks are now setup for each
test. This makes modifying network behavior on a per-test basis easier,
and makes it more clear which test relies upon which mocks.
The NetworkController `destroy` method has been updated to ensure that
it no longer throws if called before initialization.
This method was added recently in #17032, but we forgot to handle the
case where the controller was not initialized.
The "MetaMask middleware" is the set of middleware for handling methods that
we don't send to the network. This includes signing, encryption, `getAccounts`,
and methods that rely on pending transaction state.
Previously this middleware was setup as part of the network client, despite
having nothing to do with the network. They have been moved into the main RPC
pipeline established in `metamask-controller.js` instead.
This is a pure refactor, and should have no functional changes. The middleware
are still run in exactly the same order with the same arguments.
Our middleware for handling subscription and filter-related methods (`eth-json-rpc-filters`) currently lives in our RPC pipeline ahead of the network stack. This commit moves this middleware to the network client middleware instead. There are two reasons for this change. First, this middleware wraps RPC methods that are supported by the network. Second, it is necessary for this middleware to live with the network client so that it will aid us in unifying the NetworkController in this repo and the NetworkController in the `controllers` repo.
Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>
The network controller module has been renamed from `network.js` to
`network-controller.js`. All of our newer controllers have "controller"
in the module names, so this aligns better with that convention. It
also brings the test module name into alignment (it's already called
"network-controller.test.js").
