Scales the "view" instance that holds search results to the size of the
accompanying "slow chart" for which the search pane is a "sidepane".
A lot of mucking about was required due to resizing of the view
seemingly feeding back into window resizing and further implementing the
sizing logic such that the parent `QSplitter` can be resized as the
user's whim as well.
Details,
- add a `CompleterView._init: bool` which is set once (and only once)
after startup where the first display of the current symbol/feed is
shown allowing and a single *width* padding applied once at startup
to ensure we don't have an awkward line to the right of the longest
result.
- in `.resize_to_results()` only apply a minimum height to the view
using `.setMinimumHeight()` with a down-scaled (`0.91` for now) height
value from input.
- re-implement `CompleterView.show_matches()` to accept and optional
width, heigh tuple and when not supplied pull the slow chart's
dimensions and pass as input to the resize method.
- Make `SearchWidget` x dim sizing policy "fixed".
- register the `SearchWidget` for resize events with god.
- add `.show_only_cache_entries()` for easy results clearing.
- add `.space_dims()` to retrieve slow linked-charts dimensions.
- implement `SearchWidget.on_resize()` which is the caller of all the
previously mentioned resizing routines.
- do resizing and cache entry showing on search loop startup and be sure
to clear to cache when the user selects a symbol-feed with Enter.
It ended up being what'd you expect, races on the accessing shm buffer
data by the UI during the whole "mega-async-startup-everything" phase XD
So we add the following list of ad-hoc startup steps:
- do `.default_view()` on the slow chart after the fast chart is mostly
fully spawned with the intention being to capture the state where the
historical buffer is mostly loaded before sizing the view to the
graphical form of the data.
- resize slow chart sidepanes from the fast chart just before sleeping
forever (and after order mode has booted).
Turns out god widget resizes aren't triggered implicitly by window
resizes, so instead, hook into the window by moving what was our useless
method to that class. Further we explicitly define and declare that our
window has a `.godwidget: GodWidget` and set it up in the bootstrap
phase - in `run_qutractor()` during `trio` guest mode configuration.
Further deatz:
- retype the runtime/bootstrap routines to take a qwidget "type" not an
instance, and drop the whole implicit `.main_widget` stuff.
- delegate into the `GodWidget.on_win_resize()` for any window resize
which then triggers all the custom resize callbacks we already had in
place.
- privatize `ChartnPane.sidepane` so that it can't be mutated willy
nilly without calling `.set_sidepane()`.
- always adjust splitter sizes inside `LinkeSplits.add_plot()`.
More or less moves all the UI related position "nav" logic and graphics
item management into a new `._position.Nav` composite type + api for
high level mgmt of position graphics indicators across multiple charts
(fast and slow).
The slow (history) chart requires it's own y-range checker logic which
needs to be run in 2 cases:
- the last datum is in view and goes outside the previous mx/mn in view
- the chart is incremented a step
Since we need this duplicate logic this patch also factors the incremental
graphics update info "reading" into a new `DisplayState.incr_info()`
method that can be configured to a chart and input state and returns all
relevant "graphics update measure" in a tuple (for now).
Use this method throughout the rest of the display loop for both fast
and slow chart checks and in the `increment_history_view()` slow chart
task.
Use the new `Feed.get_ds_info()` method in a poll loop to definitively
get the inter-chart sampling info and avoid races with shm buffer
backfilling.
Also, factor the history increment closure-task into
`graphics_update_loop()` which will make it clearer how to factor
all the "should we update" logic into some `DisplayState` API.
If you spawn a brokerd set and no `ib` data feed was started (via our
`.data.feed.Feed` api) then there will be no active client loaded and
thus wont' be connected. So in these cases just return nothing, and
I guess we'll figure out real connection failures later?
Add an update call to the display loop to consistently update the last
datum in the history view chart. Compute the inter-chart sampling ratio
and use it to sync the linear region.
Add a first draft of a working `pyqtgraph.LinearRegionItem` link between
a history view chart (+ data set) and the normal real-time "HFT" chart
set.
Add the history view (aka more downsampled data view) chart set to the
rt/hft set's splitter as it's "first widget". Hook up linear region
callbacks to enable syncing between charts including compenstating for
the downsampling rate ration (in this case hardcoded 60 since 1s to 1M,
but we'll actually compute it going forward obvs).
More to come dawgys..
Adds an additional `GodWidget.hist_linked: LinkedSplits` alongside the
renamed `.rt_linked` to enable 2 sets of linked charts with different
sampled data sets/flows. The history set is added without "all the
fixins" for now (i.e. no order mode sidepane or search integration) such
that it is merely a top level chart which shows a much longer term
history and can be added to the UI via embedding the entire history
linked-splits instance into the real-time linked set's splitter.
Further impl deats:
- adjust the `GodWidget._chart_cache: dict[str, tuple]]` to store both
linked split chart sets per symbol so that symbol switching will
continue to work with the added history chart (set).
- rework `.load_symbol()` to operate on both the real-time (HFT) chart
set and the history set.
- rework `LinkedSplits.set_split_sizes()` to compensate for the history
chart and do more detailed height calcs arithmetic to make it appear
by default as a minor sub-chart.
- adjust `LinkedSplits.add_plot()` and `ChartPlotWidget` internals to allow
adding a plot without a sidepane and/or container `ChartnPane`
composite widget by checking for a `sidepane == False` input.
- make `.default_view()` accept a manual y-axis offset kwarg.
- adjust search mode to provide history linked splits to
`.set_chart_symbol()` call.
As part of supporting a "history view" chart which shows downsampled
datums alongside our 1s (or higher) sampled OHLC we need a separate
buffer to store a the slower history from broker backends. This begins
that design by allocating 2 buffers:
- `rt_shm: ShmArray` which maps to a `/dev/shm/` file with `_rt` suffix
- `hist_shm: ShmArray` which maps to a file with `_hist` suffix
Deliver both of these shms back from both `manage_history()` and load
them as `Feed.rt_shm`/`.hist_shm` on the client side.
Impl deats:
- init the rt buffer with the first datum from loaded history and
assign all OHLC values to that row's 'close' and the vlm to 0.
- pass the hist buffer to the backfiller task
- only spawn **one** global sampler array-row increment task per
`brokerd` and pass in the 1s delay which we presume is our lowest
OHLC sample rate for now.
- drop `open_sample_step_stream()` and just move its body contents into
`Feed.index_stream()`
Instead of worrying about the increment period per shm subscription,
just use the value passed as input and presume the caller knows that
only one task is necessary and that the wakeup (sampling) period should
be the shortest that is needed.
It's very unlikely we don't want at least a 1s sampling (both in terms
of task switching cost and general usage) which will eventually ship as
the default "real-time" feed "timeframe". Further, this "fast" increment
sampling task can handle all lower sampling periods (eg. 1m, 5m, 1H)
based on the current implementation just the same.
Also, add a global default sample period as `_defaul_delay_s` for use in
other internal modules.
Clearly, the linter didn't help us here.. but, just pass the
`brokerd` time for now in the `.broker_time` field; we can't get it from
the fill-case incremental updates in the `openOrders` sub. Add some
notes about this and how we might approach for backends with this
limitation.
This fixes a regression added after moving the msg parsing to later in
the order mode startup sequence. The `Allocator` needs to be configured
*to* the initial pos otherwise default settings will show in the UI..
Move the startup config logic from inside `mk_allocator()` to
`PositionTracker.update_from_pp()` and add a flag to allow setting the
`.startup_pp` from the current live one as is needed during initial
load.
In the short case (-ve size) we had a bug where the last sub-slots worth
of exit size would never be limited to zero once the allocator limit pos
size was hit (i.e. you could keep going more -ve on the pos,
exponentially per slot over the limit). It's a simple fix, just
a `max()` around the `l_sub_pp` var used in the next-step-size calc.
Resolves#392
Turns out we were putting too many brokername suffixes in the symbol
field and thus the order mode msg parser wasn't matching the current
asset to said msgs correctly and pps weren't being shown...
This repairs that plus simplifies the order mode initial pos msg loading
to just delegate into `process_trade_msg()` just as is done for
real-time msg updates.
If a setting fails to apply try to log an error msg and revert to the
previous setting by not applying the UI read-update until after the new
`SettingsPane.apply_setting()` call. This prevents crashes when the user
tries to give bad inputs on editable allocator fields.
Previously we only simulated paper engine fills when the data feed
provide L1 queue-levels matched an execution. This patch add further
support for clear-level matches when there are real live clears on the
data feed that are faster/not synced with the L1 (aka usually during
periods of HFT).
The solution was to simply iterate the interleaved paper book entries on
both sides for said tick types and instead yield side-specific predicate
per entry.
Not entirely sure why this all of a sudden became a problem but it seems
price changes on order edits were sometimes resulting in key errors when
modifying paper book entries quickly. This changes the implementation to
not care about matching the last price when keying/popping old orders
and use `bidict`s to more easily pop cleared orders in the paper loop.
When the paper engine is used it seems we can definitely hit races where
order ack msgs arrive close enough to status messages that `trio`
schedules the status processing before the acks. In such cases we want
to be tolerant and not crash but instead warn that we got an
unknown/out-of-order msg.
Quite a simple fix, we just assign the account-specific
`PositionTracker` to the level line's `._on_level_change()` handler
instead of whatever the current `OrderMode.current_pp` is set to.
Further this adds proper pane switching support such that when a user
modifies an order line from an account which is not the currently
selected one, the settings pane is changed to reflect the
account and thus corresponding position info for that account and
instrument B)
We were overwriting the existing loaded orders list in the per client
loop (lul) so move the def above all that.
Comment out the "try-to-cancel-inactive-orders-via-task-after-timeout"
stuff pertaining to https://github.com/erdewit/ib_insync/issues/363 for
now since we don't have a mechanism in place to cancel the re-cancel
task once the order is cancelled - plus who knows if this is even the
best way to do it..
Fills seems to be dual emitted from both the `status` and `fill` events
in `ib_insync` internals and more or less contain the same data nested
inside their `Trade` type. We started handling the 'fill' case to deal
with a race issue in commissions/cost report tracking but we don't
really want to leak that same race to incremental fills vs.
order-"closed" tracking.. So go back to only emitting the fill msgs
on statuses and a "closed" on `.remaining == 0`.
`ib` is super good not being reliable with order event sequence order
and duplication of fill info. This adds some guards to try and avoid
popping the last status status too early if we end up receiving
a `'closed'` before the expected `'fill`' event(s). Further delete the
`status_msg` ref on each iteration to avoid stale reference lookups in
the relay task/loop.
This includes darks, lives and alerts with all connecting clients
being broadcast all existing order-flow dialog states. Obviously
for now darks and alerts only live as long as the `emsd` actor lifetime
(though we will store these in local state eventually) and "live" orders
have lifetimes managed by their respective backend broker.
The details of this change-set is extensive, so here we go..
Messaging schema:
- change the messaging `Status` status-key set to:
`resp: Literal['pending', 'open', 'dark_open', 'triggered',
'closed', 'fill', 'canceled', 'error']`
which better reflects the semantics of order lifetimes and was
partially inspired by the status keys `kraken` provides for their
order-entry API. The prior key set was based on `ib`'s horrible
semantics which sound like they're right out of the 80s..
Also, we reflect this same set in the `BrokerdStatus` msg and likely
we'll just get rid of the separate brokerd-dialog side type
eventually.
- use `Literal` type annots for statuses where applicable and as they
are supported by `msgspec`.
- add additional optional `Status` fields:
-`req: Order` to allow each status msg to optionally ref its
commanding order-request msg allowing at least a request-response
style implicit tracing in all response msgs.
-`src: str` tag string to show the source of the msg.
-`reqid: str | int` such that the ems can relay the `brokerd`
request id both to the client side and have one spot to look
up prior status msgs and
- draft a (unused/commented) `Dialog` type which can be eventually used
at all EMS endpoints to track msg-flow states
EMS engine adjustments/rework:
- use the new status key set throughout and expect `BrokerdStatus` msgs
to use the same new schema as `Status`.
- add a `_DarkBook._active: dict[str, Status]` table which is now used for
all per-leg-dialog associations and order flow state tracking
allowing for the both the brokerd-relay and client-request handler loops
to read/write the same msg-table and provides for delivering
the overall EMS-active-orders state to newly/re-connecting clients
with minimal processing; this table replaces what the `._ems_entries`
table from prior.
- add `Router.client_broadcast()` to send a msg to all currently
connected peers.
- a variety of msg handler block logic tweaks including more `case:`
blocks to be both flatter and improve explicitness:
- for the relay loop move all `Status` msg update and sending to
within each block instead of a fallthrough case plus hard-to-follow
state logic.
- add a specific case for unhandled backend status keys and just log
them.
- pop alerts from `._active` immediately once triggered.
- where possible mutate status msgs fields over instantiating new
ones.
- insert and expect `Order` instances in the dark clearing loop and
adjust `case:` blocks accordingly.
- tag `dark_open` and `triggered` statuses as sourced from the ems.
- drop all the `ChainMap` stuff for now; we're going to make our own
`Dialog` type for this purpose..
Order mode rework:
- always parse the `Status` msg and use match syntax cases with object
patterns, hackily assign the `.req` in many blocks to work around not
yet having proper on-the-wire decoding yet.
- make `.load_unknown_dialog_from_msg()` expect a `Status` with boxed
`.req: Order` as input.
- change `OrderDialog` -> `Dialog` in prep for a general purpose type
of the same name.
`ib` backend order loading support:
- do "closed" status detection inside the msg-relay loop instead
of expecting the ems to do this..
- add an attempt to cancel inactive orders by scheduling cancel
submissions continually (no idea if this works).
- add a status map to go from the 80s keys to our new set.
- deliver `Status` msgs with an embedded `Order` for existing live order
loading and make sure to try an get the source exchange info (instead
of SMART).
Paper engine ported to match:
- use new status keys in `BrokerdStatus` msgs
- use `match:` syntax in request handler loop
Ideally every client that connects to the ems can know its state
(immediately) meaning relay all the order dialogs that are currently
active. This adds full (hacky WIP) support to receive those dialog
(msgs) from the `open_ems()` startup values via the `.started()` msg
from `_emsd_main()`.
Further this adds support to the order mode chart-UI to display existing
(live) orders on the chart during startup. Details include,
- add a `OrderMode.load_unknown_dialog_from_msg()` for processing and
displaying a ``BrokerdStatus`` (for now) msg from the EMS that was not
previously created by the current ems client and registering and
displaying it on the chart.
- break out the ems msg processing into a new
`order_mode.process_trade_msg()` func so that it can be called on the
startup dialog-msg set as well as eventually used a more general low
level auto-strat API (eg. when we get to displaying auto-strat and
group trading automatically on an observing chart UI.
- hackyness around msg-processing for the dialogs delivery since we're
technically delivering `BrokerdStatus` msgs when the client-side
processing technically expects `Status` msgs.. we'll rectify this
soon!
In order to avoid missed existing order message emissions on startup we
need to be sure the client side stream is registered with the router
first. So break out the starting of the
`translate_and_relay_brokerd_events()` task until inside the client
stream block and start the task using the dark clearing loop nursery.
Also, ensure `oid` (and thus for `ib` the equivalent re-used `reqid`)
are cast to `str` before registering the dark book. Deliver the dark
book entries as part of the `_emsd_main()` context `.started()` values.
This seems to have been broken in refactoring from commit 279c899de5
which was never tested against multiple accounts/clients.
The fix is 2 part:
- position tables are now correctly loaded ahead of time and used by
account for each connected client in processing of ledgers and
existing positions.
- a task for each API client is started (as implemented prior) so that
we actually get status updates for every client used for submissions.
Further we add a bit of code using `bisect.insort()` to normalize
ledgers to a datetime sorted list records (though pretty sure the `dict`
transform ruins it?) in an effort to avoid issues with ledger
transaction processing with previously minimized `Position.clears`
tables, which should (but might not?) avoid incorporating clear events
prior to the last "net-zero" positioning state.
This firstly changes `.audit_sizing()` => `.ensure_state()` and makes it
return `None` as well as only error when split ratio denoted (via
config) positions do not size as expected.
Further refinements,
- add an `.expired()` predicate method
- always return a size of zero from `.calc_size()` on expired assets
- load each `pps.toml` entry's clear tabe into `Transaction`s and use
`.add_clear()` during from config init.
In order to avoid issues with reloading ledger and API trades after an
existing `pps.toml` exists we have to make sure we not only avoid
duplicate entries but also avoid re-adding entries that would have been
removed during a prior call to the `Position.minimize_clears()` filter.
The easiest way to do this is to sort on timestamps and avoid adding any
record that pre-existed the last net-zero position ledger event that
`.minimize_clears()` discarded. In order to implement this it means
parsing config file clears table's timestamps into datetime objects for
inequality checks and we add a `Position.first_clear_dt` attr for
storing this value when managing pps in object form but never store it
in the config (since it should be obviously from the sorted clear event
table).
The (partial) fills from this sub are most indicative of clears (also
says support) whereas the msgs in the `ownTrades` sub are only emitted
after the entire order request has completed - there is no size-vlm
remaining.
Further enhancements:
- this also includes proper subscription-syncing inside `subscribe()` with
a small pre-msg-loop which waits on ack-msgs for each sub and raises any
errors. This approach should probably be implemented for the data feed
streams as well.
- configure the `ownTrades` sub to not bother sending historical data on
startup.
- make the `openOrders` sub include rate limit counters.
- handle the rare case where the ems is trying to cancel an order which
was just edited and hasn't yet had it's new `txid` registered.
Since we figured out how to pass through ems dialog ids to the
`openOrders` sub we don't really need to do much with status updates
other then error handling. This drops `process_status()` and moves the
error handling logic into a status handler sub-block; we now just
info-log status updates for troubleshooting purposes.
Why we need so many fields to accomplish passing through a dialog key to
orders is beyond me but this is how they do it with edits..
Allows not having to handle `editOrderStatus` msgs to update the dialog
key table and instead just do it in the `openOrders` sub by checking the
canceled msg for a 'cancel_reason' of 'Order replaced', in which case we
just pop the txid and wait for the new order the kraken backend engine
will submit automatically, which will now have the correct 'userref'
value we passed in via the `newuserref`, and then we add that new `txid`
to our table.
Turns out you can pass both thus making mapping an ems `oid` to
a brokerd-side `reqid` much more simple. This allows us to avoid keeping
as much local dialog state but with still the following caveats:
- ok `editOrder` msgs must update the reqid<->txid map
- only pop `reqids2txids` entries inside the `cancelOrderStatus` handler
If we don't have a pos table built out already (in mem) we can't figure
out the likely dst asset (since there's no pair entry to guide us) that
we should use to search for withdrawal transactions; so move it later.
Further this ports to the new api changes in `piker.pp`` that will land
with #365.
This ended up driving the rework of the `piker.pp` apis to use context
manager + table style which resulted in a much easier to follow
state/update system B). Also added is a flag to do a manual simulation
of a "fill triggered rt pp msg" which requires the user to delete the
last ledgered trade entry from config files and then allowing that trade
to emit through the `openOrders` sub and update client shortly after
order mode boot; this is how the rt updates were verified to work
without doing even more live orders 😂.
Patch details:
- open both `open_trade_ledger()` and `open_pps()` inside the trade
dialog startup and conduct a "pp state sync" logic phase where we now
pull the account balances and incrementally load pp data (in order,
from `pps.toml`, ledger, api) until we can generate the asset balance
by reverse incrementing through trade history eventually erroring out
if we can't reproduce the balance value.
- rework the `trade2pps()` to take in the `PpTable` and generate new
ems msgs from table updates.
- return the new `dict[str, Transaction]` expected from
`norm_trade_records()`
- only update pp config and ledger on dialog exit.
Since our ems doesn't actually do blocking style client-side submission
updates, thus resulting in the client being able to update an existing
order's state before knowing its current state, we can run into race
conditions where for some backends an order is updated using the wrong
order id. For kraken we manually implement detecting this race (lol, for
now anyway) such that when a new client side edit comes in before the
new `txid` is known, we simply expect the handler loop to cancel the
order. Further this adds cancellation on arbitrary status errors, like
rate limits.
Also this adds 2 leg (ems <-> brokerd <-> kraken) msg tracing using
a `collections.ChainMap` which is likely going to end up being the POC
for a more general data structure recommended for backends that need to
trace msg flow for translation with the ems.
Turns out the `openOrders` and `ownTrades` subs always return a `reqid`
value (the one brokerd sends to the kraken api in order requests) is
always set to zero, which seems to be a bug? So this includes patches to
work around that as well reliance on the `openOrders` sub to do most
`BrokerdStatus` updates since `XOrderStatus` events don't seem to have
much data in them at all (they almost look like pure ack events so maybe
they aren't affirmative of final state changes anyway..).
Other fixes:
- respond with a `BrokerdOrderAck` immediately after `requid` generation
not after order submission to ensure the ems has a valid `requid`
*before* kraken api events are relayed through.
- add a `reqids2txids: bidict[int, str]` which maps brokerd genned
`requid`s to kraken-side `txid`s since (as mentioned above) the
clearing and state endpoints don't relay back this value (it's always
0...)
- add log messages for each sub so that (at least for now) we can see
exact msg contents coming from kraken.
- drop `.remaining` calcs for now since we need to keep record of the
order states manually in order to retreive the original submission
vlm..
- fix the `openOrders` case for fills, in this case the message includes
no `status` field and thus we must catch it in a block *after* the
normal state handler to avoid masking.
- drop response msg generation from the cancel status case since we
can do it again from the `openOrders` handler and sending a double
status causes issues on the client side.
- add a shite ton of notes around all this missing `requid` stuff.
More or less just to avoid orders the user wasn't aware of from
persisting until we get "open order relaying" through the ems working.
Some further fixes which required a new `reqids2txids` map which keeps
track of which `kraken` "txid" is mapped to our `reqid: int`; mainly
this was needed for cancel requests which require knowing the underlying
`txid`s (since apparently kraken doesn't keep track of the "reqid" we
pass it). Pass the ws instance into `handle_order_updates()` to enable
the cancelling orders on startup. Don't key error on unknown `reqid`
values (for eg. when receiving historical trade events on startup).
Handle cancel requests first in the ems side loop.
Since we seem to always be able to get back the `reqid`/`userref` value
we send to kraken ws endpoints, we can use this as our brokerd side
order id and avoid all race cases with getting the true `txid` value
that `kraken` assigns (and which changes when you do "edits"
:eyeroll:). This simplifies status updates by allowing our relay loop
just to pass back our generated `.reqid` verbatim and allows responding
with a `BrokerdOrderAck` immediately in the request handler task which
should guarantee there are no further race conditions with the relay
loop and mapping `txid`s from kraken.. and figuring out wtf to do when
they change, etc.
Addressing same issue as in #350 where we need to compute position
updates using the *first read* from the ledger **before** we update it
to make sure `Position.lifo_update()` gets called and **not skipped**
because new trades were read as clears entries but haven't actually been
included in update calcs yet.. aka we call `Position.lifo_update()`.
Main change here is to convert `update_ledger()` into a context mngr so
that the ledger write is committed after pps updates using
`pp.update_pps_conf()`..
This is basically a hotfix to #346 as well.
Turns out the EMS can support this as originally expected: you can
update a `brokerd`-side `.reqid` through a `BrokerdAck` msg and the ems
which update its cross-dialog (leg) tracking correctly! The issue was
a bug in the `editOrderStatus` msg handling and appropriate tracking
of the correct `.oid` (ems uid) on the kraken side. This unfortunately
required adding a `emsflow: dict[str, list[BrokerdOrder]]` msg flow
tracing table which means the broker daemon is tracking all the msg flow
with the ems, though I'm wondering now if this is just good practise
anyway and maybe we should offer a small primitive type from our msging
utils to aid with this? I've used such constructs in event handling
systems prior.
There's a lot more factoring that can be done after these changes as
well but the quick detailed summary is,
- rework the `handle_order_requests()` loop to use `match:` syntax and
update the new `emsflow` table on every new request from the ems.
- fix the `editOrderStatus` case pattern to not include an error msg and
thus actually be triggered to respond to the ems with a `BrokerdAck`
containing the new `.reqid`, the new kraken side `txid`.
- skip any `openOrders` msgs which are detected as being kraken's
internal order "edits" by matching on the `cancel_reason` field.
- update the `emsflow` table in all ws-stream msg handling blocks
with responses sent to the ems.
Relates to #290
Move to using the websocket API for all order control ops and dropping
the sync rest api approach which resulted in a bunch of buggy races.
Further this gets us must faster (batch) order cancellation for free
and a simpler ems request handler loop. We now heavily leverage the new
py3.10 `match:` syntax for all kraken-side API msg parsing and
processing and handle both the `openOrders` and `ownTrades` subscription
streams.
We also block "order editing" (by immediate cancellation) for now since
the EMS isn't entirely yet equipped to handle brokerd side `.reqid`
changes (which is how kraken implements so called order "updates" or
"edits") for a given order-request dialog and we may want to even
consider just implementing "updates" ourselves via independent cancel
and submit requests? Definitely something to ponder. Alternatively we
can "masquerade" such updates behind the count-style `.oid` remapping we
had to implement anyway (kraken's limitation) and maybe everything will
just work?
Further details in this patch:
- create 2 tables for tracking the EMS's `.oid` (uui4) value to `int`s
that kraken expects (for `reqid`s): `ids` and `reqmsgs` which enable
local lookup of ems uids to piker-backend-client-side request ids and
received order messages.
- add `openOrders` sub support which more or less directly relays to
equivalent `BrokerdStatus` updates and calc the `.filled` and
`.remaining` values based on cleared vlm updates.
- add handler blocks for `[add/edit/cancel]OrderStatus` events including
error msg cases.
- don't do any order request response processing in
`handle_order_requests()` since responses are always received via one
(or both?) of the new ws subs: `ownTrades` and `openOrders` and thus
such msgs are now handled in the response relay loop.
Relates to #290Resolves#310, #296
This drops the use of `pp.update_pps_conf()` (and friends) and instead
moves to using the context style `open_trade_ledger()` and `open_pps()`
managers for faster pp msg gen due to delayed file writing (which was
the main source update latency).
In order to make this work with potentially multiple accounts this also
uses an exit stack which loads each ledger / `pps.toml` into an account
id mapped `dict`; a POC for likely how we should implement some higher
level position manager api.
The original implementation of `.calc_be_price()` wasn't correct since
the real so called "price per unit" (ppu), is actually defined by
a recurrence relation (which is why the original state-updated
`.lifo_update()` approach worked well) and requires the previous ppu to
be weighted by the new accumulated position size when considering a new
clear event. The ppu is the price that above or below which the trader
takes a win or loss on transacting one unit of the trading asset and
thus it is the true "break even price" that determines making or losing
money per fill. This patches fixes the implementation to use trailing
windows of the accumulated size and ppu to compute the next ppu value
for any new clear event as well as handle rare cases where the
"direction" changes polarity (eg. long to short in a single order). The
new method is `Position.calc_ppu()` and further details of the relation
can be seen in the doc strings.
This patch also includes a wack-ton of clean ups and removals in an
effort to refine position management api for easier use in new backends:
- drop `updaate_pps_conf()`, `load_pps_from_toml()` and rename
`load_trands_from_ledger()` -> `load_pps_from_ledger()`.
- extend `PpTable` to have a `.to_toml()` method which returns the
active set of positions ready to be serialized to the `pps.toml` file
which is collects from calling,
- `PpTable.dump_active()` which now returns double dicts of the
open/closed pp object maps.
- make `Position.minimize_clears()` now iterate the clears table in
chronological order (instead of reverse) and only drop fills prior
to any zero-size state (the old reversed way can result incorrect
history-size-retracement in cases where a position is lessened but
not completely exited).
- drop `Position.add_clear()` and instead just manually add entries
inside `.update_from_trans()` and also add a `accum_size` and `ppu`
field to ever entry thus creating a position "history" sequence of
the ppu and accum size for every position and prepares for being
and to show "position lifetimes" in the UI.
- move fqsn getting into `Position.to_pretoml()`.
Use the new `.calc_[be_price/size]()` methods when serializing to and
from the `pps.toml` format and add an audit method which will warn about
mismatched values and assign the clears table calculated values pre-write.
Drop the `.lifo_update()` method and instead allow both
`.size`/`.be_price` properties to exist (for non-ledger related uses of
`Position`) alongside the new calc methods and only get fussy about
*what* the properties are set to in the case of ledger audits.
Also changes `Position.update()` -> `.add_clear()`.
Since we're going to need them anyway for desired features, add
2 new `Position` methods:
- `.calc_be_price()` which computes the breakeven cost basis price
from the entries in the clears table.
- `.calc_size()` which just sums the clear sizes.
Add a `cost_scalar: float` control to the `.update_from_trans()` method
to allow manual adjustment of the cost weighting for the case where
a "non-symmetrical" model is wanted.
Go back to always trying to write the backing ledger files on exit, even
when there's an error (obvs without the `return` in the `finally:` block
f$#% up).
Can't believe i missed this but any `return` inside a `finally` will
suppress the error from the `try:` part... XD
Thought i was losing my mind when the ledger was mutated and then
an error just after wasn't getting raised.. lul.
Never again...
In order to avoid double transaction adds/updates and too-early-discard
of zero sized pps (like when trades are loaded from a backend broker but
were already added to a ledger or `pps.toml` prior) we now **don't** pop
such `Position` entries from the `.pps` table in order to keep each
position's clears table always in place. This avoids the edge case where
an entry was removed too early (due to zero size) but then duplicate
trade entries that were in that entrie's clears show up from the backend
and are entered into a new entry resulting in an incorrect size in a new
entry..We still only push non-net-zero entries to the `pps.toml`.
More fixes:
- return the updated set of `Positions` from `.lifo_update()`.
- return the full table set from `update_pps()`.
- use `PpTable.update_from_trans()` more throughout.
- always write the `pps.toml` on `open_pps()` exit.
- only return table from `load_pps_from_toml()`.
In an effort to begin allowing backends to have more granular control
over position updates, particular in the case where they need to be
reloaded from a trades ledger, this adds a new table API which can
be loaded using `open_pps()`.
- offer an `.update_trans()` method which takes in a `dict` of
`Transactions` and updates the current table of `Positions` from it.
- add a `.dump_active()` which renders the active pp entries dict in
a format ready for toml serialization and all closed positions since
the last update (we might want to not drop these?)
All other module-function apis currently in use should remain working as
before for the moment.
Change `.find_contract()` -> `.find_contracts()` to allow multi-search
for so called "ambiguous" contracts (like for `Future`s) such that the
method now returns a `list` of tracts and populates the contract cache
with all specific tracts retrieved. Let it take in an (unvalidated)
contract that will be fqsn-style-tokenized such that it can be called
from `.search_symbols()` (though we're not quite yet XD).
More stuff,
- add `Client.parse_patt2fqsn()` which is an fqsn to token unpacker
built from the original logic in the old `.find_contract()`.
- handle fiat/forex pairs with the `'CASH'` sectype.
- add a flag to allow unqualified contracts to fail with a warning msg.
- populate the client's contract cache with all expiries of
an ambiguous derivative.
- allow `.con_deats()` to warn msg instead of raise on def-not-found.
- add commented `assert 0` which was triggering a debugger deadlock in
`tractor` which we still haven't been able to create a unit test for.
Minimize calling `.data._shmarray.attach_shm_array()` as much as is
possible to avoid the crash from #332. This is the suggested hack from
issue #359.
Resolves https://github.com/pikers/piker/issues/359
Tyler Goodlet
goodboy
Guillermo Rodriguez