When messages were forwarded they were sent using the low level
connector .send method which accepts a message and sends it over the
link. This method sends the message as is with no modification which
means that at no point during the forwarding logic was the message
sequence number that originated from Link A renumbered to the correct
sequence number to send out on Link B which it was forwarded on.
This in turn caused the logic which drops acked messages from the send
buffer to break which in turn meant the resume could cause duplication
of message and/or messages to be lost. With enough duplicated messages
the resume of one connection could cause other connections to drop and
also initiate resume.
Fix by renumbering the sequence on forwarded messages. In the future
the sequences sent and received should also be checked to make sure this
kind of problem does not happen again, this is not done here because
partially updating a running cluster with sequence problems to one that
checks and enforces sequences numbers will be problematic.
When a plugin broadcasts an event to instances there may be hosts and
instances in the cluster which does not have the plugin loaded. This
would cause an error to be logged for every instance which does not have
the plugin loaded.
Filter out broadcast events sent to hosts and instances such that
instances and hosts that does not have the event do not received them.
Add suffixes like Ms and Ns to variables whos time unit is not in
seconds. This is aligning with a new code style of putting units
on variables that are not in SI base units.
Change the expected exported name of plugin declarations to be "plugin"
at the main entrypoint instead of the default export. This makes the
plugin's code organisation more flexible especially when using CommonJS
JavaScript modules as they can export additional symbols from the
plugin declaration file.
Implement remotely initiated stopping and restarting of the controller
and hosts. Restarting is implemented by exiting with a non-zero exit
code and relying on a process manager to start the procress again. To
prevent accidentally trying to restart on a system that doesn't have a
process manager present the --can-restart command line option needs to
be passed to enable the restart operation.
Record the time a player was first seen joining an instance in
PlayerStats. For existing stats this value is set to the last
joined time when it is first loaded.
Provide the kernel, machine, CPU Model, hostname, and Node.js version
fields to SystemInfo and display them in the Web UI. These were added
as metrics exposed to prometheus in b46efeb.
There are more pieces of information about a system than just its CPU,
Memory and disk metrics. To avoid having to build a separate collection
and subscription for metrics and system info, rename the existing system
metrics to system info in anticipation of providing additonal static
system information such as CPU model in it.
If the controller is behind a proxy then the socket.remoteAddress will
be that of the proxy instead of the end client that connected. In this
case the X-Forwarded-For header will contain the address of the end
client, but this should only be relied upon if the party connecting is a
trusted proxy, otherwise a malicious user could spoof the IP address
that is logged by providing a forged X-Forwarded-For header.
Implement a trusted proxy list consisting of a configured list of IP
addresses and/or CIDR blocks and use the last address[1] in the
X-Forwarded-For header if the remoteAddress address of the connecting
party is in the trusted proxy list.
[1]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For
The agent string was inspired by the HTTP User-Agent header to serve as
a way to identify what's connecting to the cluster. While there may
have been vision of other software connecting to a controller than the
Clusterio provided ones this seems highly unlikely to ever happen.
Remove redundant agent string for now.
Memory sizes are usually written using the prefixes with a base of 1024
instead of 1000. Implment formatting of the power of two based prefixes
for displaying memory sizes.
Add host.factorio_port_range config to hosts that specify a pool of
ports that gets automatically assigned to instances which do not have a
game_port set on them. This allows setting up a port range that's
forwarded to the host on the router and then configure that port range
on the host and have instances automatically get assigned an available
port when they start up.
Resolves: #448
Refactor away the config group concept and simplyfy the way config
fields are defined. Fields are defined directly as properties of the
static field fieldDefinitions on the class itself with a separate
interface to declare the types of fields.
This makes it possible to easily make accessing the config fields type
checked in a way that lets plugins extend the interfaces with their own
config options by adding additional fields to the interface via
declation merging.
Refactor the Config and ConfigGroup classes to match the JSON data class
pattern with toJSON, toRemote and fromJSON methods replacing the load,
init, and serialize methods. Since fromJSON requires extra information
the messages structures passes around the plain JSON representation of
the configs instead of serialising instances of the config classes
automatically.
Process updates of the resource EventSubscriber are subscribed to and
have it keep a mapping of id to value syncronised with event provider as
long as there are subscription callbacks registered with it. The
mapping is kept around after the last callback is unsubscribed so that
it can be efficiently resynced with the resource based on the updatedAt
timestaps of individual elements.
This allows the EventSubscriber to provide the right building blocks to
provide its values to React components via the the useSyncExternalStore
hook. This in turn greatly simplifies the web_ui models for the
subscribed resources.
Reduce complexity in the implementation of EventSubscriber by requiring
a control link be passed to its constructor. This is possible after the
change in 8c724e3 made the web interface control instance available to
plugins at init time.
Since subscriptions are handlede per link there's no need for the
eventReplay to be returned as a part of the SubscriptionRequest, it can
be sent and processed normally as an event. Simplify the logic by
sending eventReplay as an event and remove SubscriptionResponse.
Remove the reliance a reference to the Controller to get the link that a
subscription is tied to by explicitly handling the SubscriptionRequest
and passing the link to the SubscriptionController.
Notify the SubscriptionController that a connection closed from the
Connection instead of having the subscription controller set up an event
to do so. This simplifies the logic on the SubscriptionController's
side.
Entites that didn't have an updatedAt time at the time of creation will
default to having one set to 0. Since entities with an updatedAt time
greater than lastResponseTime is expected to be returned this means that
these entities would not be included when a client does its initial sync
subscribing to a resource. Change the default lastResponseTime
requested so that these entities are included.
Keep a copy of the instance saves details on the controller so that
saves can be queried even when the host is disconnected and the
controller can properly track and provide updates on the saves to
its clients.
Refactor HostUpdatesEvent, InstanceDetailsUpdatesEvent, ModUpdatesEvent,
ModPackUpdatesEvent and UserUpdatesEvent to have multiple updates of the
entities they support in each event. This is intended to make the events
capable of syncing the entire list that they represent.
Download and cache needed mods to run instance mod packs on instance
startup. To avoid opening too many download streams at once only one
mod is downloaded at a time.
Build the clusterio_lib mod from source and download and copy the
subspace_storage mod used for testing if it's not present in the mods
directory. This removes a manual step needed to run tests on a new
clone of the repository.
Add helper to serialise the calls made to an async function such that no
overlapping invocations happen to the async function by queue up calls
made while it's running to continue after it's running.
Replace PluginWebApi's requirePath member with npmPackage which is only
populated if the package is not marked as private and the requirePath
matches the name. This prevents the public /api/plugins endpoint from
leaking filesystem paths into the controller.
Use the JSON data class pattern for User, Role, and PlayerStats and move
them into lib/src/data. This means that User is purely data now and
can't reference role objects directly. To make it possible easily check
permissions attached to roles and store data only visible on the
controller on user objects a ControllerUser type is introduced which is
linked with the UserManager and can therefore reference role objects
directly.
Resolves#525.
Separate out the serialisation of the invocations to saveData with an
AsyncSerialMergingCallback helper than has unit tests covering its
functionality.
When creating temporary files use the pattern `.tmp.ext` instead of
`.ext.tmp` to be consistent with Factorio which creates `.tmp.zip` files
during saving.
If patching fails this will leave a `.tmp.zip` file in the instance saves
directory which is ignored by the default save selector.
Resolves#486.
Add controller.autosave_interval config that specifies the frequency
which controller config, hosts, instances, users, mod packs and plugin
specific data which is held in memory should be automatically flushed to
disk if they have changed since the last time they were saved. This
prevents data loss in the event of a server crash.
Plugins can use the onSaveData hook to save its own data at the same
time as the controller does and this obsoletes making an autosave
interval in the plugin.
Resolves#523.
Hornwitser