urbit/pkg/king/app/Main.hs
Elliot Glaysher a14b6e06d3 Boot from mined comets in king.
This makes the comet mining code actually work. You can now run
king with `new --comet` to mine a new comet and get it on the
network. Mining appears to be significantly faster; I've had to
wait up to 20 minutes with vere, but I've never needed to wait more
than 30 seconds with king.
2019-10-10 13:45:01 -07:00

546 lines
17 KiB
Haskell

{-
# Booting a Ship
- TODO Don't just boot, also run the ship (unless `-x` is set).
- TODO Figure out why ships booted by us don't work.
# Event Pruning
- `king discard-events NUM_EVENTS`: Delete the last `n` events from
the event log.
- `king discard-events-interactive`: Iterate through the events in
the event log, from last to first, pretty-print each event, and
ask if it should be pruned.
# `-L` -- Local-Only Networking
Localhost-only networking, even on real ships.
# `-O` -- Networking Disabled
Run networking drivers, but configure them to never send any packages
and to never open any ports.
# `-N` -- Dry Run
Disable all persistence and use no-op networking.
# `-x` -- Exit Immediately
When creating a new ship, or booting an existing one, simply get to
a good state, snapshot, and then exit. Don't do anything that has
any effect on the outside world, just boot or catch the snapshot up
to the event log.
# Implement subcommands to test event and effect parsing.
- `king * --collect-fx`: All effects that come from the serf get
written into the `effects` LMDB database.
- `king clear-fx PIER`: Deletes all collected effects.
- `king full-replay PIER`: Replays the whole event log events, print
any failures. On success, replace the snapshot.
# Full Replay -- An Integration Test
- Copy the event log:
- Create a new event log at the destination.
- Stream events from the first event log.
- Parse each event.
- Re-Serialize each event.
- Verify that the round-trip was successful.
- Write the event into the new database.
- Replay the event log at the destination.
- If `--collect-fx` is set, then record effects as well.
- Snapshot.
- Verify that the final mug is the same as it was before.
# Implement Remaining Serf Flags
- `DebugRam`: Memory debugging.
- `DebugCpu`: Profiling
- `CheckCorrupt`: Heap Corruption Tests
- `CheckFatal`: TODO What is this?
- `Verbose`: TODO Just the `-v` flag?
- `DryRun`: TODO Just the `-N` flag?
- `Quiet`: TODO Just the `-q` flag?
- `Hashless`: Don't use hashboard for jets.
- `Trace`: TODO What does this do?
-}
module Main (main) where
import UrbitPrelude
import Arvo
import Data.Acquire
import Data.Conduit
import Data.Conduit.List hiding (catMaybes, map, replicate, take)
import Data.RAcquire
import Noun hiding (Parser)
import Noun.Atom
import Noun.Conversions (cordToUW)
import RIO.Directory
import Vere.Pier
import Vere.Pier.Types
import Vere.Serf
import Control.Concurrent (myThreadId, runInBoundThread)
import Control.Exception (AsyncException(UserInterrupt))
import Control.Lens ((&))
import Data.Default (def)
import KingApp (runApp)
import System.Environment (getProgName)
import System.Posix.Signals (Handler(Catch), installHandler, sigTERM)
import System.Random (randomIO)
import Text.Show.Pretty (pPrint)
import Urbit.Time (Wen)
import Vere.Dawn
import Vere.LockFile (lockFile)
import qualified CLI as CLI
import qualified Data.Set as Set
import qualified Data.Text as T
import qualified EventBrowser as EventBrowser
import qualified System.IO.LockFile.Internal as Lock
import qualified Urbit.Ob as Ob
import qualified Vere.Log as Log
import qualified Vere.Pier as Pier
import qualified Vere.Serf as Serf
import qualified Vere.Term as Term
--------------------------------------------------------------------------------
zod :: Ship
zod = 0
--------------------------------------------------------------------------------
removeFileIfExists :: HasLogFunc env => FilePath -> RIO env ()
removeFileIfExists pax = do
exists <- doesFileExist pax
when exists $ do
removeFile pax
--------------------------------------------------------------------------------
toSerfFlags :: CLI.Opts -> Serf.Flags
toSerfFlags CLI.Opts{..} = catMaybes m
where
-- TODO: This is not all the flags.
m = [ from oQuiet Serf.Quiet
, from oTrace Serf.Trace
, from oHashless Serf.Hashless
, from oQuiet Serf.Quiet
, from oVerbose Serf.Verbose
, from oDryRun Serf.DryRun
]
from True flag = Just flag
from False _ = Nothing
tryBootFromPill :: HasLogFunc e
=> FilePath -> FilePath -> Bool -> Serf.Flags -> Ship
-> LegacyBootEvent
-> RIO e ()
tryBootFromPill pillPath shipPath lite flags ship boot = do
rwith bootedPier $ \(serf, log, ss) -> do
logTrace "Booting"
logTrace $ displayShow ss
io $ threadDelay 500000
ss <- shutdown serf 0
logTrace $ displayShow ss
logTrace "Booted!"
where
bootedPier = do
lockFile shipPath
Pier.booted pillPath shipPath lite flags ship boot
runAcquire :: (MonadUnliftIO m, MonadIO m)
=> Acquire a -> m a
runAcquire act = with act pure
runRAcquire :: (MonadUnliftIO (m e), MonadIO (m e), MonadReader e (m e))
=> RAcquire e a -> m e a
runRAcquire act = rwith act pure
tryPlayShip :: HasLogFunc e => FilePath -> Serf.Flags -> RIO e ()
tryPlayShip shipPath flags = do
runRAcquire $ do
lockFile shipPath
rio $ logTrace "RESUMING SHIP"
sls <- Pier.resumed shipPath flags
rio $ logTrace "SHIP RESUMED"
Pier.pier shipPath Nothing sls
tryResume :: HasLogFunc e => FilePath -> Serf.Flags -> RIO e ()
tryResume shipPath flags = do
rwith resumedPier $ \(serf, log, ss) -> do
logTrace (displayShow ss)
threadDelay 500000
ss <- shutdown serf 0
logTrace (displayShow ss)
logTrace "Resumed!"
where
resumedPier = do
lockFile shipPath
Pier.resumed shipPath flags
tryFullReplay :: HasLogFunc e => FilePath -> Serf.Flags -> RIO e ()
tryFullReplay shipPath flags = do
wipeSnapshot
tryResume shipPath flags
where
wipeSnapshot = do
logTrace "wipeSnapshot"
logDebug $ display $ pack @Text ("Wiping " <> north)
logDebug $ display $ pack @Text ("Wiping " <> south)
removeFileIfExists north
removeFileIfExists south
north = shipPath <> "/.urb/chk/north.bin"
south = shipPath <> "/.urb/chk/south.bin"
--------------------------------------------------------------------------------
checkEvs :: forall e. HasLogFunc e => FilePath -> Word64 -> Word64 -> RIO e ()
checkEvs pierPath first last = do
rwith (Log.existing logPath) $ \log -> do
let ident = Log.identity log
logTrace (displayShow ident)
runConduit $ Log.streamEvents log first
.| showEvents first (fromIntegral $ lifecycleLen ident)
where
logPath :: FilePath
logPath = pierPath <> "/.urb/log"
showEvents :: EventId -> EventId -> ConduitT ByteString Void (RIO e) ()
showEvents eId _ | eId > last = pure ()
showEvents eId cycle =
await >>= \case
Nothing -> lift $ logTrace "Everything checks out."
Just bs -> do
lift $ do
n <- io $ cueBSExn bs
when (eId > cycle) $ do
(mug, wen, evNoun) <- unpackJob n
fromNounErr evNoun &
either (logError . displayShow) pure
showEvents (succ eId) cycle
unpackJob :: Noun -> RIO e (Mug, Wen, Noun)
unpackJob = io . fromNounExn
--------------------------------------------------------------------------------
{-
This runs the serf at `$top/.tmpdir`, but we disable snapshots,
so this should never actually be created. We just do this to avoid
letting the serf use an existing snapshot.
-}
collectAllFx :: e. HasLogFunc e => FilePath -> RIO e ()
collectAllFx top = do
logTrace $ display $ pack @Text top
rwith collectedFX $ \() ->
logTrace "Done collecting effects!"
where
tmpDir :: FilePath
tmpDir = top <> "/.tmpdir"
collectedFX :: RAcquire e ()
collectedFX = do
lockFile top
log <- Log.existing (top <> "/.urb/log")
serf <- Serf.run (Serf.Config tmpDir serfFlags)
rio $ Serf.collectFX serf log
serfFlags :: Serf.Flags
serfFlags = [Serf.Hashless, Serf.DryRun]
--------------------------------------------------------------------------------
{-
Interesting
-}
testPill :: HasLogFunc e => FilePath -> Bool -> Bool -> RIO e ()
testPill pax showPil showSeq = do
putStrLn "Reading pill file."
pillBytes <- readFile pax
putStrLn "Cueing pill file."
pillNoun <- io $ cueBS pillBytes & either throwIO pure
putStrLn "Parsing pill file."
pill <- fromNounErr pillNoun & either (throwIO . uncurry ParseErr) pure
putStrLn "Using pill to generate boot sequence."
bootSeq <- generateBootSeq zod pill False (Fake $ Ship 0)
putStrLn "Validate jam/cue and toNoun/fromNoun on pill value"
reJam <- validateNounVal pill
putStrLn "Checking if round-trip matches input file:"
unless (reJam == pillBytes) $ do
putStrLn " Our jam does not match the file...\n"
putStrLn " This is surprising, but it is probably okay."
when showPil $ do
putStrLn "\n\n== Pill ==\n"
io $ pPrint pill
when showSeq $ do
putStrLn "\n\n== Boot Sequence ==\n"
io $ pPrint bootSeq
validateNounVal :: (HasLogFunc e, Eq a, ToNoun a, FromNoun a)
=> a -> RIO e ByteString
validateNounVal inpVal = do
putStrLn " jam"
inpByt <- evaluate $ jamBS $ toNoun inpVal
putStrLn " cue"
outNon <- cueBS inpByt & either throwIO pure
putStrLn " fromNoun"
outVal <- fromNounErr outNon & either (throwIO . uncurry ParseErr) pure
putStrLn " toNoun"
outNon <- evaluate (toNoun outVal)
putStrLn " jam"
outByt <- evaluate $ jamBS outNon
putStrLn "Checking if: x == cue (jam x)"
unless (inpVal == outVal) $
error "Value fails test: x == cue (jam x)"
putStrLn "Checking if: jam x == jam (cue (jam x))"
unless (inpByt == outByt) $
error "Value fails test: jam x == jam (cue (jam x))"
pure outByt
--------------------------------------------------------------------------------
newShip :: forall e. HasLogFunc e => CLI.New -> CLI.Opts -> RIO e ()
newShip CLI.New{..} opts
| CLI.BootComet <- nBootType = do
putStrLn "boot: retrieving list of stars currently accepting comets"
starList <- dawnCometList
putStrLn ("boot: " ++ (tshow $ length starList) ++
" star(s) currently accepting comets")
putStrLn "boot: mining a comet"
eny <- io $ randomIO
let seed = mineComet (Set.fromList starList) eny
putStrLn ("boot: found comet " ++ (renderShip (sShip seed)))
bootFromSeed seed
| CLI.BootFake name <- nBootType = do
ship <- shipFrom name
tryBootFromPill nPillPath (pierPath name) nLite flags ship (Fake ship)
| CLI.BootFromKeyfile keyFile <- nBootType = do
text <- readFileUtf8 keyFile
asAtom <- case cordToUW (Cord $ T.strip text) of
Nothing -> error "Couldn't parse keyfile. Hint: keyfiles start with 0w?"
Just (UW a) -> pure a
asNoun <- cueExn asAtom
seed :: Seed <- case fromNoun asNoun of
Nothing -> error "Keyfile does not seem to contain a seed."
Just s -> pure s
bootFromSeed seed
where
shipFrom :: Text -> RIO e Ship
shipFrom name = case Ob.parsePatp name of
Left x -> error "Invalid ship name"
Right p -> pure $ Ship $ fromIntegral $ Ob.fromPatp p
pierPath :: Text -> FilePath
pierPath name = case nPierPath of
Just x -> x
Nothing -> "./" <> unpack name
nameFromShip :: Ship -> RIO e Text
nameFromShip s = name
where
nameWithSig = Ob.renderPatp $ Ob.patp $ fromIntegral s
name = case stripPrefix "~" nameWithSig of
Nothing -> error "Urbit.ob didn't produce string with ~"
Just x -> pure x
bootFromSeed :: Seed -> RIO e ()
bootFromSeed seed = do
ethReturn <- dawnVent seed
case ethReturn of
Left x -> error $ unpack x
Right dawn -> do
let ship = sShip $ dSeed dawn
path <- pierPath <$> nameFromShip ship
tryBootFromPill nPillPath path nLite flags ship (Dawn dawn)
flags = toSerfFlags opts
runShip :: HasLogFunc e => CLI.Run -> CLI.Opts -> RIO e ()
runShip (CLI.Run pierPath) opts = tryPlayShip pierPath (toSerfFlags opts)
startBrowser :: HasLogFunc e => FilePath -> RIO e ()
startBrowser pierPath = runRAcquire $ do
lockFile pierPath
log <- Log.existing (pierPath <> "/.urb/log")
rio $ EventBrowser.run log
checkDawn :: HasLogFunc e => FilePath -> RIO e ()
checkDawn keyfilePath = do
-- The keyfile is a jammed Seed then rendered in UW format
text <- readFileUtf8 keyfilePath
asAtom <- case cordToUW (Cord $ T.strip text) of
Nothing -> error "Couldn't parse keyfile. Hint: keyfiles start with 0w?"
Just (UW a) -> pure a
asNoun <- cueExn asAtom
seed :: Seed <- case fromNoun asNoun of
Nothing -> error "Keyfile does not seem to contain a seed."
Just s -> pure s
print $ show seed
e <- dawnVent seed
print $ show e
checkComet :: HasLogFunc e => RIO e ()
checkComet = do
starList <- dawnCometList
putStrLn "Stars currently accepting comets:"
let starNames = map (Ob.renderPatp . Ob.patp . fromIntegral) starList
print starNames
putStrLn "Trying to mine a comet..."
eny <- io $ randomIO
let s = mineComet (Set.fromList starList) eny
print s
main :: IO ()
main = do
mainTid <- myThreadId
let onTermSig = throwTo mainTid UserInterrupt
installHandler sigTERM (Catch onTermSig) Nothing
CLI.parseArgs >>= runApp . \case
CLI.CmdRun r o -> runShip r o
CLI.CmdNew n o -> newShip n o
CLI.CmdBug (CLI.CollectAllFX pax) -> collectAllFx pax
CLI.CmdBug (CLI.EventBrowser pax) -> startBrowser pax
CLI.CmdBug (CLI.ValidatePill pax pil seq) -> testPill pax pil seq
CLI.CmdBug (CLI.ValidateEvents pax f l) -> checkEvs pax f l
CLI.CmdBug (CLI.ValidateFX pax f l) -> checkFx pax f l
CLI.CmdBug (CLI.CheckDawn pax) -> checkDawn pax
CLI.CmdBug CLI.CheckComet -> checkComet
CLI.CmdCon port -> connTerm port
--------------------------------------------------------------------------------
connTerm :: e. HasLogFunc e => Word16 -> RIO e ()
connTerm port =
Term.runTerminalClient (fromIntegral port)
--------------------------------------------------------------------------------
checkFx :: HasLogFunc e
=> FilePath -> Word64 -> Word64 -> RIO e ()
checkFx pierPath first last =
rwith (Log.existing logPath) $ \log ->
runConduit $ streamFX log first last
.| tryParseFXStream
where
logPath = pierPath <> "/.urb/log"
streamFX :: HasLogFunc e
=> Log.EventLog -> Word64 -> Word64
-> ConduitT () ByteString (RIO e) ()
streamFX log first last = do
Log.streamEffectsRows log first .| loop
where
loop = await >>= \case Nothing -> pure ()
Just (eId, bs) | eId > last -> pure ()
Just (eId, bs) -> yield bs >> loop
tryParseFXStream :: HasLogFunc e => ConduitT ByteString Void (RIO e) ()
tryParseFXStream = loop
where
loop = await >>= \case
Nothing -> pure ()
Just bs -> do
n <- liftIO (cueBSExn bs)
fromNounErr n & either (logError . displayShow) pure
loop
{-
tryCopyLog :: IO ()
tryCopyLog = do
let logPath = "/Users/erg/src/urbit/zod/.urb/falselog/"
falselogPath = "/Users/erg/src/urbit/zod/.urb/falselog2/"
persistQ <- newTQueueIO
releaseQ <- newTQueueIO
(ident, nextEv, events) <-
with (do { log <- Log.existing logPath
; Pier.runPersist log persistQ (writeTQueue releaseQ)
; pure log
})
\log -> do
ident <- pure $ Log.identity log
events <- runConduit (Log.streamEvents log 1 .| consume)
nextEv <- Log.nextEv log
pure (ident, nextEv, events)
print ident
print nextEv
print (length events)
persistQ2 <- newTQueueIO
releaseQ2 <- newTQueueIO
with (do { log <- Log.new falselogPath ident
; Pier.runPersist log persistQ2 (writeTQueue releaseQ2)
; pure log
})
$ \log2 -> do
let writs = zip [1..] events <&> \(id, a) ->
(Writ id Nothing a, [])
print "About to write"
for_ writs $ \w ->
atomically (writeTQueue persistQ2 w)
print "About to wait"
replicateM_ 100 $ do
atomically $ readTQueue releaseQ2
print "Done"
-}