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market,dex: trade suspension #287

Merged
merged 3 commits into from
May 14, 2020
Merged

market,dex: trade suspension #287

merged 3 commits into from
May 14, 2020

Commits on May 14, 2020

  1. server/comms: add (*Server).Broadcast and Link.IP

    @chappjc
    chappjc committed May 14, 2020
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  2. market,dex,admin,db,book,msgjson: Suspend support, clean Market stop 

    Refactor epochPump (into epump.go) for suspend support.

Add Market.Suspend and Market.Running.

When persistBook is false, in-memory and persistent books are purged.
Add the PurgeBook method to Market to do this. PurgeBook calls the new
OrderArchiver.FlushBook method, clears the in-memory book, and unlocks
all coins. TODO: unlock just the book orders, not possible epoch orders.

Run shutdown sequence is now meticulous.

Use internal notifyChan with lifetime of Run, and async subscriber
broadcasts via the closure goroutine inside Run.

db: add OrderArchiver.FlushBook

Add the FlushBook method to the pg.Archiver type.  It changes all orders
for a market that have status booked to status revoked, and it creates
and stores the server-generated pseudocancel orders. It does this all in
a single db transaction.  This is similar to calling RevokeOrder
individually on all booked orders.

The new PurgeBook query template is added to do the bulk book-revoked
status change for a market.

coinlock: Add UnlockAll to CoinLocker interface.

book: add Clear method to Book

market: rework bookUpdateSignal -> updateAction+sigData

Remove bookUpdateSignal, which combined data used for many different
signals, and create updateSignal with action and data fields. Receivers
will type cast data into one of several sigData types that contain only
the data that is relevant to the action at hand.

msgjson, market: add TradeSuspension message

(*BookRouter).runBook now sends msgjson.TradeSuspension for
msgjson.SuspensionRoute when the market sends a sigDataSuspend
on the order feed.  (*Market).Run sends this signal when cycleEpoch hits
the target suspend epoch index.

market,dex: SuspendMarket methods for OrderRouter and DEX mgr

Add (*OrderRouter).SuspendMarket, called from the DEX manager in the new
server/dex.(*DEX) SuspendMarket method.

server/admin: suspend and market info routes

msgjson: suspend data in config

server/dex: on suspend update config resp and send TradeSuspension

market: Add Status type and (*Market).Status

dex: add MarketStatus and MarketStatuses methods for admin API

admin: add /markets

The markets route summarizes configured markets.  e.g.

$   dexadm markets
{
    "btc_ltc": {
        "running": true,
        "epochlen": 6000,
        "activeepoch": 264872312,
        "startepoch": 264872312
    },
    "dcr_btc": {
        "running": true,
        "epochlen": 7000,
        "activeepoch": 227033410,
        "startepoch": 227033410
    }
}

$   dexadm market/dcr_btc/suspend
{
    "market": "dcr_btc",
    "finalepoch": 227033424,
    "supendtime": "2020-05-11T21:52:55Z"
}

$   dexadm markets{
    "btc_ltc": {
        "running": true,
        "epochlen": 6000,
        "activeepoch": 264872328,
        "startepoch": 264872328
    },
    "dcr_btc": {
        "running": true,
        "epochlen": 7000,
        "activeepoch": 227033424,
        "startepoch": 227033424,
        "finalepoch": 227033424,
        "persistbook": true
    }
}

$   dexadm markets
{
    "btc_ltc": {
        "running": true,
        "epochlen": 6000,
        "activeepoch": 264872329,
        "startepoch": 264872329
    },
    "dcr_btc": {
        "running": false,
        "epochlen": 7000,
        "activeepoch": 0,
        "startepoch": 0,
        "finalepoch": 227033424,
        "persistbook": true
    }
}
    @chappjc
    chappjc committed May 14, 2020
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  3. market: simplify epochPump and eliminate possible Insert deadlock

    @chappjc
    chappjc committed May 14, 2020
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