mirror of
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Merge branch 'solutions'
This commit is contained in:
commit
1d223b2206
15 changed files with 1421 additions and 0 deletions
10
README.md
10
README.md
|
@ -36,6 +36,11 @@
|
|||
- Native Tokens.
|
||||
- NFT's.
|
||||
|
||||
- [Lecture #6](https://youtu.be/24SHPHEc3zo)
|
||||
|
||||
- Oracles.
|
||||
- Using the PAB.
|
||||
|
||||
## Code Examples
|
||||
|
||||
- Lecture #1: [English Auction](code/week01)
|
||||
|
@ -43,6 +48,7 @@
|
|||
- Lecture #3: [Script Context & Parameterized Contracts](code/week03)
|
||||
- Lecture #4: [Monad, Traces & Contracts](code/week04)
|
||||
- Lecture #5: [Native Tokens](code/week05)
|
||||
- Lecture #6: [Oracles](code/week06)
|
||||
|
||||
## Exercises
|
||||
|
||||
|
@ -86,6 +92,10 @@
|
|||
- Add a deadline to the minting policy in the [Homework1](code/week05/src/Week05/Homework1.hs) module.
|
||||
- Fix the token name to the empty ByteString in the NFT contract in the [Homework2](code/week05/src/Week05/Homework2.hs) module.
|
||||
|
||||
- Week #6
|
||||
|
||||
- Get the Oracle demo running and extend it in some way.
|
||||
|
||||
## Some Plutus Modules
|
||||
|
||||
- [`Language.Marlowe.Semantics`](https://github.com/input-output-hk/plutus/blob/master/marlowe/src/Language/Marlowe/Semantics.hs), contains Marlowe types and semantics.
|
||||
|
|
23
code/week06/.devcontainer/devcontainer.json
Normal file
23
code/week06/.devcontainer/devcontainer.json
Normal file
|
@ -0,0 +1,23 @@
|
|||
{
|
||||
"name": "Plutus Starter Project",
|
||||
"image": "plutus-devcontainer:latest",
|
||||
|
||||
"remoteUser": "plutus",
|
||||
|
||||
"mounts": [
|
||||
// This shares cabal's remote repository state with the host. We don't mount the whole of '.cabal', because
|
||||
// 1. '.cabal/config' contains absolute paths that will only make sense on the host, and
|
||||
// 2. '.cabal/store' is not necessarily portable to different version of cabal etc.
|
||||
"source=${localEnv:HOME}/.cabal/packages,target=/home/plutus/.cabal/packages,type=bind,consistency=cached",
|
||||
],
|
||||
|
||||
"settings": {
|
||||
// Note: don't change from bash so it runs .bashrc
|
||||
"terminal.integrated.shell.linux": "/bin/bash"
|
||||
},
|
||||
|
||||
// IDs of extensions inside container
|
||||
"extensions": [
|
||||
"haskell.haskell"
|
||||
],
|
||||
}
|
6
code/week06/.gitignore
vendored
Normal file
6
code/week06/.gitignore
vendored
Normal file
|
@ -0,0 +1,6 @@
|
|||
dist-newstyle/
|
||||
oracle.cid
|
||||
W2.cid
|
||||
W3.cid
|
||||
W4.cid
|
||||
W5.cid
|
201
code/week06/LICENSE
Normal file
201
code/week06/LICENSE
Normal file
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
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||||
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|
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Notwithstanding the above, nothing herein shall supersede or modify
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59
code/week06/app/oracle-client.hs
Normal file
59
code/week06/app/oracle-client.hs
Normal file
|
@ -0,0 +1,59 @@
|
|||
{-# LANGUAGE NumericUnderscores #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
|
||||
module Main
|
||||
( main
|
||||
) where
|
||||
|
||||
import Control.Concurrent
|
||||
import Control.Monad (when)
|
||||
import Control.Monad.IO.Class (MonadIO (..))
|
||||
import Data.ByteString (ByteString)
|
||||
import Data.ByteString.Char8 (unpack)
|
||||
import Data.Proxy (Proxy (..))
|
||||
import Data.Text (pack)
|
||||
import Data.UUID
|
||||
import Network.HTTP.Req
|
||||
import Text.Regex.TDFA
|
||||
|
||||
main :: IO ()
|
||||
main = do
|
||||
uuid <- read <$> readFile "oracle.cid"
|
||||
putStrLn $ "oracle contract instance id: " ++ show uuid
|
||||
go uuid Nothing
|
||||
where
|
||||
go :: UUID -> Maybe Integer -> IO a
|
||||
go uuid m = do
|
||||
x <- getExchangeRate
|
||||
let y = Just x
|
||||
when (m /= y) $
|
||||
updateOracle uuid x
|
||||
threadDelay 5_000_000
|
||||
go uuid y
|
||||
|
||||
updateOracle :: UUID -> Integer -> IO ()
|
||||
updateOracle uuid x = runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
POST
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "endpoint" /: "update")
|
||||
(ReqBodyJson x)
|
||||
(Proxy :: Proxy (JsonResponse ()))
|
||||
(port 8080)
|
||||
liftIO $ putStrLn $ if responseStatusCode v == 200
|
||||
then "updated oracle to " ++ show x
|
||||
else "error updating oracle"
|
||||
|
||||
getExchangeRate :: IO Integer
|
||||
getExchangeRate = runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
GET
|
||||
(https "coinmarketcap.com" /: "currencies" /: "cardano")
|
||||
NoReqBody
|
||||
bsResponse
|
||||
mempty
|
||||
let priceRegex = "priceValue___11gHJ \">\\$([\\.0-9]*)" :: ByteString
|
||||
(_, _, _, [bs]) = responseBody v =~ priceRegex :: (ByteString, ByteString, ByteString, [ByteString])
|
||||
d = read $ unpack bs :: Double
|
||||
x = round $ 1_000_000 * d
|
||||
liftIO $ putStrLn $ "queried exchange rate: " ++ show d
|
||||
return x
|
124
code/week06/app/oracle-pab.hs
Normal file
124
code/week06/app/oracle-pab.hs
Normal file
|
@ -0,0 +1,124 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DerivingStrategies #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE LambdaCase #-}
|
||||
{-# LANGUAGE NumericUnderscores #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE RankNTypes #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Main
|
||||
( main
|
||||
) where
|
||||
|
||||
import Control.Monad (forM_, void, when)
|
||||
import Control.Monad.Freer (Eff, Member, interpret, type (~>))
|
||||
import Control.Monad.Freer.Error (Error)
|
||||
import Control.Monad.Freer.Extras.Log (LogMsg)
|
||||
import Control.Monad.IO.Class (MonadIO (..))
|
||||
import Data.Aeson (FromJSON, Result (..), fromJSON)
|
||||
import Data.Default (Default (..))
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Text (Text, pack)
|
||||
import Ledger
|
||||
import Ledger.Constraints
|
||||
import qualified Ledger.Value as Value
|
||||
import Plutus.Contract
|
||||
import Plutus.PAB.Effects.Contract (ContractEffect (..))
|
||||
import Plutus.PAB.Effects.Contract.Builtin (Builtin, SomeBuiltin (..), endpointsToSchemas, handleBuiltin)
|
||||
import Plutus.PAB.Monitoring.PABLogMsg (PABMultiAgentMsg)
|
||||
import Plutus.PAB.Simulator (SimulatorEffectHandlers)
|
||||
import qualified Plutus.PAB.Simulator as Simulator
|
||||
import Plutus.PAB.Types (PABError (..))
|
||||
import qualified Plutus.PAB.Webserver.Server as PAB.Server
|
||||
import qualified Plutus.Contracts.Currency as Currency
|
||||
|
||||
import Wallet.Emulator.Types (Wallet (..), walletPubKey)
|
||||
import Wallet.Types (ContractInstanceId (..))
|
||||
|
||||
import qualified Week06.Oracle.Core as Oracle
|
||||
import Week06.Oracle.PAB (OracleContracts (..))
|
||||
import qualified Week06.Oracle.Swap as Oracle
|
||||
|
||||
main :: IO ()
|
||||
main = void $ Simulator.runSimulationWith handlers $ do
|
||||
Simulator.logString @(Builtin OracleContracts) "Starting Oracle PAB webserver. Press enter to exit."
|
||||
shutdown <- PAB.Server.startServerDebug
|
||||
|
||||
cidInit <- Simulator.activateContract (Wallet 1) Init
|
||||
cs <- waitForLast cidInit
|
||||
_ <- Simulator.waitUntilFinished cidInit
|
||||
|
||||
cidOracle <- Simulator.activateContract (Wallet 1) $ Oracle cs
|
||||
liftIO $ writeFile "oracle.cid" $ show $ unContractInstanceId cidOracle
|
||||
oracle <- waitForLast cidOracle
|
||||
|
||||
forM_ wallets $ \w ->
|
||||
when (w /= Wallet 1) $ do
|
||||
cid <- Simulator.activateContract w $ Swap oracle
|
||||
liftIO $ writeFile ('W' : show (getWallet w) ++ ".cid") $ show $ unContractInstanceId cid
|
||||
|
||||
void $ liftIO getLine
|
||||
shutdown
|
||||
|
||||
waitForLast :: FromJSON a => ContractInstanceId -> Simulator.Simulation t a
|
||||
waitForLast cid =
|
||||
flip Simulator.waitForState cid $ \json -> case fromJSON json of
|
||||
Success (Last (Just x)) -> Just x
|
||||
_ -> Nothing
|
||||
|
||||
wallets :: [Wallet]
|
||||
wallets = [Wallet i | i <- [1 .. 5]]
|
||||
|
||||
usdt :: TokenName
|
||||
usdt = "USDT"
|
||||
|
||||
oracleParams :: CurrencySymbol -> Oracle.OracleParams
|
||||
oracleParams cs = Oracle.OracleParams
|
||||
{ Oracle.opFees = 1_000_000
|
||||
, Oracle.opSymbol = cs
|
||||
, Oracle.opToken = usdt
|
||||
}
|
||||
|
||||
handleOracleContracts ::
|
||||
( Member (Error PABError) effs
|
||||
, Member (LogMsg (PABMultiAgentMsg (Builtin OracleContracts))) effs
|
||||
)
|
||||
=> ContractEffect (Builtin OracleContracts)
|
||||
~> Eff effs
|
||||
handleOracleContracts = handleBuiltin getSchema getContract where
|
||||
getSchema = \case
|
||||
Init -> endpointsToSchemas @Empty
|
||||
Oracle _ -> endpointsToSchemas @Oracle.OracleSchema
|
||||
Swap _ -> endpointsToSchemas @Oracle.SwapSchema
|
||||
getContract = \case
|
||||
Init -> SomeBuiltin initContract
|
||||
Oracle cs -> SomeBuiltin $ Oracle.runOracle $ oracleParams cs
|
||||
Swap oracle -> SomeBuiltin $ Oracle.swap oracle
|
||||
|
||||
handlers :: SimulatorEffectHandlers (Builtin OracleContracts)
|
||||
handlers =
|
||||
Simulator.mkSimulatorHandlers @(Builtin OracleContracts) def []
|
||||
$ interpret handleOracleContracts
|
||||
|
||||
initContract :: Contract (Last CurrencySymbol) Empty Text ()
|
||||
initContract = do
|
||||
ownPK <- pubKeyHash <$> ownPubKey
|
||||
cur <-
|
||||
mapError (pack . show)
|
||||
(Currency.mintContract ownPK [(usdt, fromIntegral (length wallets) * amount)]
|
||||
:: Contract (Last CurrencySymbol) Empty Currency.CurrencyError Currency.OneShotCurrency)
|
||||
let cs = Currency.currencySymbol cur
|
||||
v = Value.singleton cs usdt amount
|
||||
forM_ wallets $ \w -> do
|
||||
let pkh = pubKeyHash $ walletPubKey w
|
||||
when (pkh /= ownPK) $ do
|
||||
tx <- submitTx $ mustPayToPubKey pkh v
|
||||
awaitTxConfirmed $ txId tx
|
||||
tell $ Last $ Just cs
|
||||
where
|
||||
amount :: Integer
|
||||
amount = 100_000_000
|
123
code/week06/app/swap-client.hs
Normal file
123
code/week06/app/swap-client.hs
Normal file
|
@ -0,0 +1,123 @@
|
|||
{-# LANGUAGE NumericUnderscores #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
|
||||
module Main
|
||||
( main
|
||||
) where
|
||||
|
||||
import Control.Concurrent
|
||||
import Control.Exception
|
||||
import Control.Monad.IO.Class (MonadIO (..))
|
||||
import Data.Aeson (Result (..), fromJSON)
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Proxy (Proxy (..))
|
||||
import Data.Text (pack)
|
||||
import Data.UUID
|
||||
import Ledger.Value (flattenValue)
|
||||
import Network.HTTP.Req
|
||||
import Plutus.PAB.Events.ContractInstanceState (PartiallyDecodedResponse (..))
|
||||
import Plutus.PAB.Webserver.Types
|
||||
import System.Environment (getArgs)
|
||||
import System.IO
|
||||
import Text.Read (readMaybe)
|
||||
|
||||
import Week06.Oracle.PAB (OracleContracts)
|
||||
|
||||
main :: IO ()
|
||||
main = do
|
||||
[i :: Int] <- map read <$> getArgs
|
||||
uuid <- read <$> readFile ('W' : show i ++ ".cid")
|
||||
hSetBuffering stdout NoBuffering
|
||||
putStrLn $ "swap contract instance id for Wallet " ++ show i ++ ": " ++ show uuid
|
||||
go uuid
|
||||
where
|
||||
go :: UUID -> IO a
|
||||
go uuid = do
|
||||
cmd <- readCommand
|
||||
case cmd of
|
||||
Offer amt -> offer uuid amt
|
||||
Retrieve -> retrieve uuid
|
||||
Use -> use uuid
|
||||
Funds -> getFunds uuid
|
||||
go uuid
|
||||
|
||||
readCommand :: IO Command
|
||||
readCommand = do
|
||||
putStr "enter command (Offer amt, Retrieve, Use or Funds): "
|
||||
s <- getLine
|
||||
maybe readCommand return $ readMaybe s
|
||||
|
||||
data Command = Offer Integer | Retrieve | Use | Funds
|
||||
deriving (Show, Read, Eq, Ord)
|
||||
|
||||
getFunds :: UUID -> IO ()
|
||||
getFunds uuid = handle h $ runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
POST
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "endpoint" /: "funds")
|
||||
(ReqBodyJson ())
|
||||
(Proxy :: Proxy (JsonResponse ()))
|
||||
(port 8080)
|
||||
if responseStatusCode v /= 200
|
||||
then liftIO $ putStrLn "error getting funds"
|
||||
else do
|
||||
w <- req
|
||||
GET
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "status")
|
||||
NoReqBody
|
||||
(Proxy :: Proxy (JsonResponse (ContractInstanceClientState OracleContracts)))
|
||||
(port 8080)
|
||||
liftIO $ putStrLn $ case fromJSON $ observableState $ cicCurrentState $ responseBody w of
|
||||
Success (Last (Just f)) -> "funds: " ++ show (flattenValue f)
|
||||
_ -> "error decoding state"
|
||||
where
|
||||
h :: HttpException -> IO ()
|
||||
h _ = threadDelay 1_000_000 >> getFunds uuid
|
||||
|
||||
offer :: UUID -> Integer -> IO ()
|
||||
offer uuid amt = handle h $ runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
POST
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "endpoint" /: "offer")
|
||||
(ReqBodyJson amt)
|
||||
(Proxy :: Proxy (JsonResponse ()))
|
||||
(port 8080)
|
||||
liftIO $ putStrLn $ if responseStatusCode v == 200
|
||||
then "offered swap of " ++ show amt ++ " lovelace"
|
||||
else "error offering swap"
|
||||
where
|
||||
h :: HttpException -> IO ()
|
||||
h _ = threadDelay 1_000_000 >> offer uuid amt
|
||||
|
||||
retrieve :: UUID -> IO ()
|
||||
retrieve uuid = handle h $ runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
POST
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "endpoint" /: "retrieve")
|
||||
(ReqBodyJson ())
|
||||
(Proxy :: Proxy (JsonResponse ()))
|
||||
(port 8080)
|
||||
liftIO $ putStrLn $ if responseStatusCode v == 200
|
||||
then "retrieved swaps"
|
||||
else "error retrieving swaps"
|
||||
where
|
||||
h :: HttpException -> IO ()
|
||||
h _ = threadDelay 1_000_000 >> retrieve uuid
|
||||
|
||||
use :: UUID -> IO ()
|
||||
use uuid = handle h $ runReq defaultHttpConfig $ do
|
||||
v <- req
|
||||
POST
|
||||
(http "127.0.0.1" /: "api" /: "new" /: "contract" /: "instance" /: pack (show uuid) /: "endpoint" /: "use")
|
||||
(ReqBodyJson ())
|
||||
(Proxy :: Proxy (JsonResponse ()))
|
||||
(port 8080)
|
||||
liftIO $ putStrLn $ if responseStatusCode v == 200
|
||||
then "used swap"
|
||||
else "error using swap"
|
||||
where
|
||||
h :: HttpException -> IO ()
|
||||
h _ = threadDelay 1_000_000 >> use uuid
|
||||
|
||||
|
195
code/week06/cabal.project
Normal file
195
code/week06/cabal.project
Normal file
|
@ -0,0 +1,195 @@
|
|||
index-state: 2021-07-07T00:00:00Z
|
||||
|
||||
packages: ./.
|
||||
|
||||
-- You never, ever, want this.
|
||||
write-ghc-environment-files: never
|
||||
|
||||
-- Always build tests and benchmarks.
|
||||
tests: true
|
||||
benchmarks: true
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/plutus.git
|
||||
subdir:
|
||||
freer-extras
|
||||
playground-common
|
||||
plutus-chain-index
|
||||
plutus-core
|
||||
plutus-contract
|
||||
plutus-ledger
|
||||
plutus-ledger-api
|
||||
plutus-pab
|
||||
plutus-tx
|
||||
plutus-tx-plugin
|
||||
plutus-use-cases
|
||||
prettyprinter-configurable
|
||||
quickcheck-dynamic
|
||||
word-array
|
||||
tag: 8a20664f00d8f396920385947903761a9a897fe0
|
||||
|
||||
-- The following sections are copied from the 'plutus' repository cabal.project at the revision
|
||||
-- given above.
|
||||
-- This is necessary because the 'plutus' libraries depend on a number of other libraries which are
|
||||
-- not on Hackage, and so need to be pulled in as `source-repository-package`s themselves. Make sure to
|
||||
-- re-update this section from the template when you do an upgrade.
|
||||
|
||||
-- This is also needed so evenful-sql-common will build with a
|
||||
-- newer version of persistent. See stack.yaml for the mirrored
|
||||
-- configuration.
|
||||
package eventful-sql-common
|
||||
ghc-options: -XDerivingStrategies -XStandaloneDeriving -XUndecidableInstances -XDataKinds -XFlexibleInstances -XMultiParamTypeClasses
|
||||
|
||||
allow-newer:
|
||||
-- Pins to an old version of Template Haskell, unclear if/when it will be updated
|
||||
size-based:template-haskell
|
||||
|
||||
-- The following two dependencies are needed by plutus.
|
||||
, eventful-sql-common:persistent
|
||||
, eventful-sql-common:persistent-template
|
||||
, ouroboros-consensus-byron:formatting
|
||||
, beam-core:aeson
|
||||
, beam-sqlite:aeson
|
||||
, beam-sqlite:dlist
|
||||
, beam-migrate:aeson
|
||||
|
||||
constraints:
|
||||
-- big breaking change here, inline-r doens't have an upper bound
|
||||
singletons < 3.0
|
||||
-- breaks eventful even more than it already was
|
||||
, persistent-template < 2.12
|
||||
-- bizarre issue: in earlier versions they define their own 'GEq', in newer
|
||||
-- ones they reuse the one from 'some', but there isn't e.g. a proper version
|
||||
-- constraint from dependent-sum-template (which is the library we actually use).
|
||||
, dependent-sum > 0.6.2.0
|
||||
|
||||
-- See the note on nix/pkgs/default.nix:agdaPackages for why this is here.
|
||||
-- (NOTE this will change to ieee754 in newer versions of nixpkgs).
|
||||
extra-packages: ieee, filemanip
|
||||
|
||||
-- Drops an instance breaking our code. Should be released to Hackage eventually.
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/Quid2/flat.git
|
||||
tag: 95e5d7488451e43062ca84d5376b3adcc465f1cd
|
||||
|
||||
-- Needs some patches, but upstream seems to be fairly dead (no activity in > 1 year)
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/shmish111/purescript-bridge.git
|
||||
tag: 6a92d7853ea514be8b70bab5e72077bf5a510596
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/shmish111/servant-purescript.git
|
||||
tag: a76104490499aa72d40c2790d10e9383e0dbde63
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-crypto.git
|
||||
tag: ce8f1934e4b6252084710975bd9bbc0a4648ece4
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-base
|
||||
tag: a715c7f420770b70bbe95ca51d3dec83866cb1bd
|
||||
subdir:
|
||||
binary
|
||||
binary/test
|
||||
slotting
|
||||
cardano-crypto-class
|
||||
cardano-crypto-praos
|
||||
cardano-crypto-tests
|
||||
strict-containers
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-prelude
|
||||
tag: fd773f7a58412131512b9f694ab95653ac430852
|
||||
subdir:
|
||||
cardano-prelude
|
||||
cardano-prelude-test
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/ouroboros-network
|
||||
tag: e338f2cf8e1078fbda9555dd2b169c6737ef6774
|
||||
subdir:
|
||||
monoidal-synchronisation
|
||||
typed-protocols
|
||||
typed-protocols-examples
|
||||
ouroboros-network
|
||||
ouroboros-network-testing
|
||||
ouroboros-network-framework
|
||||
ouroboros-consensus
|
||||
ouroboros-consensus-byron
|
||||
ouroboros-consensus-cardano
|
||||
ouroboros-consensus-shelley
|
||||
io-sim
|
||||
io-classes
|
||||
network-mux
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/iohk-monitoring-framework
|
||||
tag: 34abfb7f4f5610cabb45396e0496472446a0b2ca
|
||||
subdir:
|
||||
iohk-monitoring
|
||||
tracer-transformers
|
||||
contra-tracer
|
||||
plugins/backend-aggregation
|
||||
plugins/backend-ekg
|
||||
plugins/backend-monitoring
|
||||
plugins/backend-trace-forwarder
|
||||
plugins/scribe-systemd
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-ledger-specs
|
||||
tag: 6b0fca7a73c317f3af7c14dd4dc38178cc78a6c8
|
||||
subdir:
|
||||
byron/chain/executable-spec
|
||||
byron/crypto
|
||||
byron/crypto/test
|
||||
byron/ledger/executable-spec
|
||||
byron/ledger/impl
|
||||
byron/ledger/impl/test
|
||||
semantics/executable-spec
|
||||
semantics/small-steps-test
|
||||
shelley/chain-and-ledger/dependencies/non-integer
|
||||
shelley/chain-and-ledger/executable-spec
|
||||
shelley/chain-and-ledger/shelley-spec-ledger-test
|
||||
shelley-ma/impl
|
||||
cardano-ledger-core
|
||||
alonzo/impl
|
||||
|
||||
-- A lot of plutus dependencies have to be synchronized with the dependencies of
|
||||
-- cardano-node. If you update cardano-node, please make sure that all dependencies
|
||||
-- of cardano-node are also updated.
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/cardano-node.git
|
||||
tag: f3ef4ed72894499160f2330b91572a159005c148
|
||||
subdir:
|
||||
cardano-api
|
||||
cardano-node
|
||||
cardano-cli
|
||||
cardano-config
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/Win32-network
|
||||
tag: 94153b676617f8f33abe8d8182c37377d2784bd1
|
||||
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/hedgehog-extras
|
||||
tag: 8bcd3c9dc22cc44f9fcfe161f4638a384fc7a187
|
||||
|
||||
-- The following dependencies are not mirrored in the
|
||||
-- stack.yaml file, but they are needed regardless by cabal.
|
||||
source-repository-package
|
||||
type: git
|
||||
location: https://github.com/input-output-hk/goblins
|
||||
tag: cde90a2b27f79187ca8310b6549331e59595e7ba
|
10
code/week06/hie.yaml
Normal file
10
code/week06/hie.yaml
Normal file
|
@ -0,0 +1,10 @@
|
|||
cradle:
|
||||
cabal:
|
||||
- path: "./src"
|
||||
component: "lib:plutus-pioneer-program-week06"
|
||||
- path: "./app/oracle-pab.hs"
|
||||
component: "exe:oracle-pab"
|
||||
- path: "./app/oracle-client.hs"
|
||||
component: "exe:oracle-client"
|
||||
- path: "./app/swap-client.hs"
|
||||
component: "exe:swap-client"
|
73
code/week06/plutus-pioneer-program-week06.cabal
Normal file
73
code/week06/plutus-pioneer-program-week06.cabal
Normal file
|
@ -0,0 +1,73 @@
|
|||
Cabal-Version: 2.4
|
||||
Name: plutus-pioneer-program-week06
|
||||
Version: 0.1.0.0
|
||||
Author: Lars Bruenjes
|
||||
Maintainer: brunjlar@gmail.com
|
||||
Build-Type: Simple
|
||||
Copyright: © 2021 Lars Bruenjes
|
||||
License: Apache-2.0
|
||||
License-files: LICENSE
|
||||
|
||||
library
|
||||
hs-source-dirs: src
|
||||
exposed-modules: Week06.Oracle.Core
|
||||
Week06.Oracle.Funds
|
||||
Week06.Oracle.PAB
|
||||
Week06.Oracle.Swap
|
||||
Week06.Oracle.Test
|
||||
build-depends: aeson
|
||||
, base ^>=4.14.1.0
|
||||
, containers
|
||||
, data-default
|
||||
, freer-extras
|
||||
, playground-common
|
||||
, plutus-contract
|
||||
, plutus-ledger
|
||||
, plutus-ledger-api
|
||||
, plutus-tx-plugin
|
||||
, plutus-tx
|
||||
, plutus-use-cases
|
||||
, prettyprinter
|
||||
, text
|
||||
default-language: Haskell2010
|
||||
ghc-options: -Wall -fobject-code -fno-ignore-interface-pragmas -fno-omit-interface-pragmas -fno-strictness -fno-spec-constr -fno-specialise
|
||||
|
||||
executable oracle-pab
|
||||
main-is: oracle-pab.hs
|
||||
hs-source-dirs: app
|
||||
ghc-options: -Wall -threaded
|
||||
build-depends: aeson
|
||||
, base ^>= 4.14.1.0
|
||||
, data-default
|
||||
, freer-extras
|
||||
, freer-simple
|
||||
, plutus-contract
|
||||
, plutus-ledger
|
||||
, plutus-pab
|
||||
, plutus-pioneer-program-week06
|
||||
, plutus-use-cases
|
||||
, text
|
||||
|
||||
executable oracle-client
|
||||
main-is: oracle-client.hs
|
||||
hs-source-dirs: app
|
||||
ghc-options: -Wall
|
||||
build-depends: base ^>= 4.14.1.0
|
||||
, bytestring
|
||||
, regex-tdfa ^>= 1.3.1.0
|
||||
, req ^>= 3.9.0
|
||||
, text
|
||||
, uuid
|
||||
|
||||
executable swap-client
|
||||
main-is: swap-client.hs
|
||||
hs-source-dirs: app
|
||||
ghc-options: -Wall
|
||||
build-depends: aeson
|
||||
, base ^>= 4.14.1.0
|
||||
, plutus-ledger
|
||||
, plutus-pab
|
||||
, plutus-pioneer-program-week06
|
||||
, req ^>= 3.9.0
|
||||
, text
|
||||
, uuid
|
200
code/week06/src/Week06/Oracle/Core.hs
Normal file
200
code/week06/src/Week06/Oracle/Core.hs
Normal file
|
@ -0,0 +1,200 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE MultiParamTypeClasses #-}
|
||||
{-# LANGUAGE NoImplicitPrelude #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Week06.Oracle.Core
|
||||
( Oracle (..)
|
||||
, OracleRedeemer (..)
|
||||
, oracleTokenName
|
||||
, oracleValue
|
||||
, oracleAsset
|
||||
, typedOracleValidator
|
||||
, oracleValidator
|
||||
, oracleAddress
|
||||
, OracleSchema
|
||||
, OracleParams (..)
|
||||
, runOracle
|
||||
, findOracle
|
||||
) where
|
||||
|
||||
import Control.Monad hiding (fmap)
|
||||
import Data.Aeson (FromJSON, ToJSON)
|
||||
import qualified Data.Map as Map
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Text (Text, pack)
|
||||
import GHC.Generics (Generic)
|
||||
import Plutus.Contract as Contract
|
||||
import qualified PlutusTx
|
||||
import PlutusTx.Prelude hiding (Semigroup(..), unless)
|
||||
import Ledger hiding (singleton)
|
||||
import Ledger.Constraints as Constraints
|
||||
import qualified Ledger.Typed.Scripts as Scripts
|
||||
import Ledger.Value as Value
|
||||
import Ledger.Ada as Ada
|
||||
import Plutus.Contracts.Currency as Currency
|
||||
import Prelude (Semigroup (..), Show (..), String)
|
||||
import qualified Prelude
|
||||
|
||||
data Oracle = Oracle
|
||||
{ oSymbol :: !CurrencySymbol
|
||||
, oOperator :: !PubKeyHash
|
||||
, oFee :: !Integer
|
||||
, oAsset :: !AssetClass
|
||||
} deriving (Show, Generic, FromJSON, ToJSON, Prelude.Eq, Prelude.Ord)
|
||||
|
||||
PlutusTx.makeLift ''Oracle
|
||||
|
||||
data OracleRedeemer = Update | Use
|
||||
deriving Show
|
||||
|
||||
PlutusTx.unstableMakeIsData ''OracleRedeemer
|
||||
|
||||
{-# INLINABLE oracleTokenName #-}
|
||||
oracleTokenName :: TokenName
|
||||
oracleTokenName = TokenName emptyByteString
|
||||
|
||||
{-# INLINABLE oracleAsset #-}
|
||||
oracleAsset :: Oracle -> AssetClass
|
||||
oracleAsset oracle = AssetClass (oSymbol oracle, oracleTokenName)
|
||||
|
||||
{-# INLINABLE oracleValue #-}
|
||||
oracleValue :: TxOut -> (DatumHash -> Maybe Datum) -> Maybe Integer
|
||||
oracleValue o f = do
|
||||
dh <- txOutDatum o
|
||||
Datum d <- f dh
|
||||
PlutusTx.fromBuiltinData d
|
||||
|
||||
{-# INLINABLE mkOracleValidator #-}
|
||||
mkOracleValidator :: Oracle -> Integer -> OracleRedeemer -> ScriptContext -> Bool
|
||||
mkOracleValidator oracle x r ctx =
|
||||
traceIfFalse "token missing from input" inputHasToken &&
|
||||
traceIfFalse "token missing from output" outputHasToken &&
|
||||
case r of
|
||||
Update -> traceIfFalse "operator signature missing" (txSignedBy info $ oOperator oracle) &&
|
||||
traceIfFalse "invalid output datum" validOutputDatum
|
||||
Use -> traceIfFalse "oracle value changed" (outputDatum == Just x) &&
|
||||
traceIfFalse "fees not paid" feesPaid
|
||||
where
|
||||
info :: TxInfo
|
||||
info = scriptContextTxInfo ctx
|
||||
|
||||
ownInput :: TxOut
|
||||
ownInput = case findOwnInput ctx of
|
||||
Nothing -> traceError "oracle input missing"
|
||||
Just i -> txInInfoResolved i
|
||||
|
||||
inputHasToken :: Bool
|
||||
inputHasToken = assetClassValueOf (txOutValue ownInput) (oracleAsset oracle) == 1
|
||||
|
||||
ownOutput :: TxOut
|
||||
ownOutput = case getContinuingOutputs ctx of
|
||||
[o] -> o
|
||||
_ -> traceError "expected exactly one oracle output"
|
||||
|
||||
outputHasToken :: Bool
|
||||
outputHasToken = assetClassValueOf (txOutValue ownOutput) (oracleAsset oracle) == 1
|
||||
|
||||
outputDatum :: Maybe Integer
|
||||
outputDatum = oracleValue ownOutput (`findDatum` info)
|
||||
|
||||
validOutputDatum :: Bool
|
||||
validOutputDatum = isJust outputDatum
|
||||
|
||||
feesPaid :: Bool
|
||||
feesPaid =
|
||||
let
|
||||
inVal = txOutValue ownInput
|
||||
outVal = txOutValue ownOutput
|
||||
in
|
||||
outVal `geq` (inVal <> Ada.lovelaceValueOf (oFee oracle))
|
||||
|
||||
data Oracling
|
||||
instance Scripts.ValidatorTypes Oracling where
|
||||
type instance DatumType Oracling = Integer
|
||||
type instance RedeemerType Oracling = OracleRedeemer
|
||||
|
||||
typedOracleValidator :: Oracle -> Scripts.TypedValidator Oracling
|
||||
typedOracleValidator oracle = Scripts.mkTypedValidator @Oracling
|
||||
($$(PlutusTx.compile [|| mkOracleValidator ||]) `PlutusTx.applyCode` PlutusTx.liftCode oracle)
|
||||
$$(PlutusTx.compile [|| wrap ||])
|
||||
where
|
||||
wrap = Scripts.wrapValidator @Integer @OracleRedeemer
|
||||
|
||||
oracleValidator :: Oracle -> Validator
|
||||
oracleValidator = Scripts.validatorScript . typedOracleValidator
|
||||
|
||||
oracleAddress :: Oracle -> Ledger.Address
|
||||
oracleAddress = scriptAddress . oracleValidator
|
||||
|
||||
data OracleParams = OracleParams
|
||||
{ opFees :: !Integer
|
||||
, opSymbol :: !CurrencySymbol
|
||||
, opToken :: !TokenName
|
||||
} deriving (Show, Generic, FromJSON, ToJSON)
|
||||
|
||||
startOracle :: forall w s. OracleParams -> Contract w s Text Oracle
|
||||
startOracle op = do
|
||||
pkh <- pubKeyHash <$> Contract.ownPubKey
|
||||
osc <- mapError (pack . show) (mintContract pkh [(oracleTokenName, 1)] :: Contract w s CurrencyError OneShotCurrency)
|
||||
let cs = Currency.currencySymbol osc
|
||||
oracle = Oracle
|
||||
{ oSymbol = cs
|
||||
, oOperator = pkh
|
||||
, oFee = opFees op
|
||||
, oAsset = AssetClass (opSymbol op, opToken op)
|
||||
}
|
||||
logInfo @String $ "started oracle " ++ show oracle
|
||||
return oracle
|
||||
|
||||
updateOracle :: forall w s. Oracle -> Integer -> Contract w s Text ()
|
||||
updateOracle oracle x = do
|
||||
m <- findOracle oracle
|
||||
let c = Constraints.mustPayToTheScript x $ assetClassValue (oracleAsset oracle) 1
|
||||
case m of
|
||||
Nothing -> do
|
||||
ledgerTx <- submitTxConstraints (typedOracleValidator oracle) c
|
||||
awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ "set initial oracle value to " ++ show x
|
||||
Just (oref, o, _) -> do
|
||||
let lookups = Constraints.unspentOutputs (Map.singleton oref o) <>
|
||||
Constraints.typedValidatorLookups (typedOracleValidator oracle) <>
|
||||
Constraints.otherScript (oracleValidator oracle)
|
||||
tx = c <> Constraints.mustSpendScriptOutput oref (Redeemer $ PlutusTx.toBuiltinData Update)
|
||||
ledgerTx <- submitTxConstraintsWith @Oracling lookups tx
|
||||
awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ "updated oracle value to " ++ show x
|
||||
|
||||
findOracle :: forall w s. Oracle -> Contract w s Text (Maybe (TxOutRef, TxOutTx, Integer))
|
||||
findOracle oracle = do
|
||||
utxos <- Map.filter f <$> utxoAt (oracleAddress oracle)
|
||||
return $ case Map.toList utxos of
|
||||
[(oref, o)] -> do
|
||||
x <- oracleValue (txOutTxOut o) $ \dh -> Map.lookup dh $ txData $ txOutTxTx o
|
||||
return (oref, o, x)
|
||||
_ -> Nothing
|
||||
where
|
||||
f :: TxOutTx -> Bool
|
||||
f o = assetClassValueOf (txOutValue $ txOutTxOut o) (oracleAsset oracle) == 1
|
||||
|
||||
type OracleSchema = Endpoint "update" Integer
|
||||
|
||||
runOracle :: OracleParams -> Contract (Last Oracle) OracleSchema Text ()
|
||||
runOracle op = do
|
||||
oracle <- startOracle op
|
||||
tell $ Last $ Just oracle
|
||||
go oracle
|
||||
where
|
||||
go :: Oracle -> Contract (Last Oracle) OracleSchema Text a
|
||||
go oracle = do
|
||||
x <- endpoint @"update"
|
||||
updateOracle oracle x
|
||||
go oracle
|
41
code/week06/src/Week06/Oracle/Funds.hs
Normal file
41
code/week06/src/Week06/Oracle/Funds.hs
Normal file
|
@ -0,0 +1,41 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE MultiParamTypeClasses #-}
|
||||
{-# LANGUAGE NoImplicitPrelude #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Week06.Oracle.Funds
|
||||
( ownFunds
|
||||
, ownFunds'
|
||||
) where
|
||||
|
||||
import Control.Monad hiding (fmap)
|
||||
import qualified Data.Map as Map
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Text (Text)
|
||||
import Plutus.Contract as Contract
|
||||
import PlutusTx.Prelude hiding ((<$>))
|
||||
import Prelude (Show (..), String, (<$>))
|
||||
import Ledger hiding (singleton)
|
||||
import Ledger.Value as Value
|
||||
|
||||
ownFunds :: Contract w s Text Value
|
||||
ownFunds = do
|
||||
pk <- ownPubKey
|
||||
utxos <- utxoAt $ pubKeyAddress pk
|
||||
let v = mconcat $ Map.elems $ txOutValue . txOutTxOut <$> utxos
|
||||
logInfo @String $ "own funds: " ++ show (Value.flattenValue v)
|
||||
return v
|
||||
|
||||
ownFunds' :: Contract (Last Value) Empty Text ()
|
||||
ownFunds' = do
|
||||
handleError logError $ ownFunds >>= tell . Last . Just
|
||||
void $ Contract.waitNSlots 1
|
||||
ownFunds'
|
19
code/week06/src/Week06/Oracle/PAB.hs
Normal file
19
code/week06/src/Week06/Oracle/PAB.hs
Normal file
|
@ -0,0 +1,19 @@
|
|||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
|
||||
module Week06.Oracle.PAB
|
||||
( OracleContracts (..)
|
||||
) where
|
||||
|
||||
import Data.Aeson (FromJSON, ToJSON)
|
||||
import Data.Text.Prettyprint.Doc (Pretty (..), viaShow)
|
||||
import GHC.Generics (Generic)
|
||||
import Ledger
|
||||
|
||||
import qualified Week06.Oracle.Core as Oracle
|
||||
|
||||
data OracleContracts = Init | Oracle CurrencySymbol | Swap Oracle.Oracle
|
||||
deriving (Eq, Ord, Show, Generic, FromJSON, ToJSON)
|
||||
|
||||
instance Pretty OracleContracts where
|
||||
pretty = viaShow
|
226
code/week06/src/Week06/Oracle/Swap.hs
Normal file
226
code/week06/src/Week06/Oracle/Swap.hs
Normal file
|
@ -0,0 +1,226 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE MultiParamTypeClasses #-}
|
||||
{-# LANGUAGE NoImplicitPrelude #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Week06.Oracle.Swap
|
||||
( SwapSchema
|
||||
, swap
|
||||
) where
|
||||
|
||||
import Control.Monad hiding (fmap)
|
||||
import Data.List (find)
|
||||
import qualified Data.Map as Map
|
||||
import Data.Maybe (mapMaybe)
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Text (Text)
|
||||
import Plutus.Contract as Contract
|
||||
import qualified PlutusTx
|
||||
import PlutusTx.Prelude hiding (Semigroup(..), (<$>), unless, mapMaybe, find)
|
||||
import Ledger hiding (singleton)
|
||||
import Ledger.Constraints as Constraints
|
||||
import qualified Ledger.Typed.Scripts as Scripts
|
||||
import Ledger.Ada as Ada hiding (divide)
|
||||
import Ledger.Value as Value
|
||||
import Prelude (Semigroup (..), Show (..), String, (<$>))
|
||||
|
||||
import Week06.Oracle.Core
|
||||
import Week06.Oracle.Funds
|
||||
|
||||
{-# INLINABLE price #-}
|
||||
price :: Integer -> Integer -> Integer
|
||||
price lovelace exchangeRate = (lovelace * exchangeRate) `divide` 1000000
|
||||
|
||||
{-# INLINABLE lovelaces #-}
|
||||
lovelaces :: Value -> Integer
|
||||
lovelaces = Ada.getLovelace . Ada.fromValue
|
||||
|
||||
{-# INLINABLE mkSwapValidator #-}
|
||||
mkSwapValidator :: Oracle -> Address -> PubKeyHash -> () -> ScriptContext -> Bool
|
||||
mkSwapValidator oracle addr pkh () ctx =
|
||||
txSignedBy info pkh ||
|
||||
(traceIfFalse "expected exactly two script inputs" hasTwoScriptInputs &&
|
||||
traceIfFalse "price not paid" sellerPaid)
|
||||
|
||||
where
|
||||
info :: TxInfo
|
||||
info = scriptContextTxInfo ctx
|
||||
|
||||
oracleInput :: TxOut
|
||||
oracleInput =
|
||||
let
|
||||
ins = [ o
|
||||
| i <- txInfoInputs info
|
||||
, let o = txInInfoResolved i
|
||||
, txOutAddress o == addr
|
||||
]
|
||||
in
|
||||
case ins of
|
||||
[o] -> o
|
||||
_ -> traceError "expected exactly one oracle input"
|
||||
|
||||
oracleValue' = case oracleValue oracleInput (`findDatum` info) of
|
||||
Nothing -> traceError "oracle value not found"
|
||||
Just x -> x
|
||||
|
||||
hasTwoScriptInputs :: Bool
|
||||
hasTwoScriptInputs =
|
||||
let
|
||||
xs = filter (isJust . toValidatorHash . txOutAddress . txInInfoResolved) $ txInfoInputs info
|
||||
in
|
||||
length xs == 2
|
||||
|
||||
minPrice :: Integer
|
||||
minPrice =
|
||||
let
|
||||
lovelaceIn = case findOwnInput ctx of
|
||||
Nothing -> traceError "own input not found"
|
||||
Just i -> lovelaces $ txOutValue $ txInInfoResolved i
|
||||
in
|
||||
price lovelaceIn oracleValue'
|
||||
|
||||
sellerPaid :: Bool
|
||||
sellerPaid =
|
||||
let
|
||||
pricePaid :: Integer
|
||||
pricePaid = assetClassValueOf (valuePaidTo info pkh) (oAsset oracle)
|
||||
in
|
||||
pricePaid >= minPrice
|
||||
|
||||
data Swapping
|
||||
instance Scripts.ValidatorTypes Swapping where
|
||||
type instance DatumType Swapping = PubKeyHash
|
||||
type instance RedeemerType Swapping = ()
|
||||
|
||||
typedSwapValidator :: Oracle -> Scripts.TypedValidator Swapping
|
||||
typedSwapValidator oracle = Scripts.mkTypedValidator @Swapping
|
||||
($$(PlutusTx.compile [|| mkSwapValidator ||])
|
||||
`PlutusTx.applyCode` PlutusTx.liftCode oracle
|
||||
`PlutusTx.applyCode` PlutusTx.liftCode (oracleAddress oracle))
|
||||
$$(PlutusTx.compile [|| wrap ||])
|
||||
where
|
||||
wrap = Scripts.wrapValidator @PubKeyHash @()
|
||||
|
||||
swapValidator :: Oracle -> Validator
|
||||
swapValidator = Scripts.validatorScript . typedSwapValidator
|
||||
|
||||
swapAddress :: Oracle -> Ledger.Address
|
||||
swapAddress = scriptAddress . swapValidator
|
||||
|
||||
offerSwap :: forall w s. Oracle -> Integer -> Contract w s Text ()
|
||||
offerSwap oracle amt = do
|
||||
pkh <- pubKeyHash <$> Contract.ownPubKey
|
||||
let tx = Constraints.mustPayToTheScript pkh $ Ada.lovelaceValueOf amt
|
||||
ledgerTx <- submitTxConstraints (typedSwapValidator oracle) tx
|
||||
awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ "offered " ++ show amt ++ " lovelace for swap"
|
||||
|
||||
findSwaps :: Oracle -> (PubKeyHash -> Bool) -> Contract w s Text [(TxOutRef, TxOutTx, PubKeyHash)]
|
||||
findSwaps oracle p = do
|
||||
utxos <- utxoAt $ swapAddress oracle
|
||||
return $ mapMaybe g $ Map.toList utxos
|
||||
where
|
||||
f :: TxOutTx -> Maybe PubKeyHash
|
||||
f o = do
|
||||
dh <- txOutDatumHash $ txOutTxOut o
|
||||
(Datum d) <- Map.lookup dh $ txData $ txOutTxTx o
|
||||
PlutusTx.fromBuiltinData d
|
||||
|
||||
g :: (TxOutRef, TxOutTx) -> Maybe (TxOutRef, TxOutTx, PubKeyHash)
|
||||
g (oref, o) = do
|
||||
pkh <- f o
|
||||
guard $ p pkh
|
||||
return (oref, o, pkh)
|
||||
|
||||
retrieveSwaps :: Oracle -> Contract w s Text ()
|
||||
retrieveSwaps oracle = do
|
||||
pkh <- pubKeyHash <$> ownPubKey
|
||||
xs <- findSwaps oracle (== pkh)
|
||||
case xs of
|
||||
[] -> logInfo @String "no swaps found"
|
||||
_ -> do
|
||||
let lookups = Constraints.unspentOutputs (Map.fromList [(oref, o) | (oref, o, _) <- xs]) <>
|
||||
Constraints.otherScript (swapValidator oracle)
|
||||
tx = mconcat [Constraints.mustSpendScriptOutput oref $ Redeemer $ PlutusTx.toBuiltinData () | (oref, _, _) <- xs]
|
||||
ledgerTx <- submitTxConstraintsWith @Swapping lookups tx
|
||||
awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ "retrieved " ++ show (length xs) ++ " swap(s)"
|
||||
|
||||
useSwap :: forall w s. Oracle -> Contract w s Text ()
|
||||
useSwap oracle = do
|
||||
funds <- ownFunds
|
||||
let amt = assetClassValueOf funds $ oAsset oracle
|
||||
logInfo @String $ "available assets: " ++ show amt
|
||||
|
||||
m <- findOracle oracle
|
||||
case m of
|
||||
Nothing -> logInfo @String "oracle not found"
|
||||
Just (oref, o, x) -> do
|
||||
logInfo @String $ "found oracle, exchange rate " ++ show x
|
||||
pkh <- pubKeyHash <$> Contract.ownPubKey
|
||||
swaps <- findSwaps oracle (/= pkh)
|
||||
case find (f amt x) swaps of
|
||||
Nothing -> logInfo @String "no suitable swap found"
|
||||
Just (oref', o', pkh') -> do
|
||||
let v = txOutValue (txOutTxOut o) <> lovelaceValueOf (oFee oracle)
|
||||
p = assetClassValue (oAsset oracle) $ price (lovelaces $ txOutValue $ txOutTxOut o') x
|
||||
lookups = Constraints.otherScript (swapValidator oracle) <>
|
||||
Constraints.otherScript (oracleValidator oracle) <>
|
||||
Constraints.unspentOutputs (Map.fromList [(oref, o), (oref', o')])
|
||||
tx = Constraints.mustSpendScriptOutput oref (Redeemer $ PlutusTx.toBuiltinData Use) <>
|
||||
Constraints.mustSpendScriptOutput oref' (Redeemer $ PlutusTx.toBuiltinData ()) <>
|
||||
Constraints.mustPayToOtherScript
|
||||
(validatorHash $ oracleValidator oracle)
|
||||
(Datum $ PlutusTx.toBuiltinData x)
|
||||
v <>
|
||||
Constraints.mustPayToPubKey pkh' p
|
||||
ledgerTx <- submitTxConstraintsWith @Swapping lookups tx
|
||||
awaitTxConfirmed $ txId ledgerTx
|
||||
logInfo @String $ "made swap with price " ++ show (Value.flattenValue p)
|
||||
where
|
||||
getPrice :: Integer -> TxOutTx -> Integer
|
||||
getPrice x o = price (lovelaces $ txOutValue $ txOutTxOut o) x
|
||||
|
||||
f :: Integer -> Integer -> (TxOutRef, TxOutTx, PubKeyHash) -> Bool
|
||||
f amt x (_, o, _) = getPrice x o <= amt
|
||||
|
||||
type SwapSchema =
|
||||
Endpoint "offer" Integer
|
||||
.\/ Endpoint "retrieve" ()
|
||||
.\/ Endpoint "use" ()
|
||||
.\/ Endpoint "funds" ()
|
||||
|
||||
swap :: Oracle -> Contract (Last Value) SwapSchema Text ()
|
||||
swap oracle = (offer `select` retrieve `select` use `select` funds) >> swap oracle
|
||||
where
|
||||
offer :: Contract (Last Value) SwapSchema Text ()
|
||||
offer = h $ do
|
||||
amt <- endpoint @"offer"
|
||||
offerSwap oracle amt
|
||||
|
||||
retrieve :: Contract (Last Value) SwapSchema Text ()
|
||||
retrieve = h $ do
|
||||
endpoint @"retrieve"
|
||||
retrieveSwaps oracle
|
||||
|
||||
use :: Contract (Last Value) SwapSchema Text ()
|
||||
use = h $ do
|
||||
endpoint @"use"
|
||||
useSwap oracle
|
||||
|
||||
funds :: Contract (Last Value) SwapSchema Text ()
|
||||
funds = h $ do
|
||||
endpoint @"funds"
|
||||
v <- ownFunds
|
||||
tell $ Last $ Just v
|
||||
|
||||
h :: Contract (Last Value) SwapSchema Text () -> Contract (Last Value) SwapSchema Text ()
|
||||
h = handleError logError
|
111
code/week06/src/Week06/Oracle/Test.hs
Normal file
111
code/week06/src/Week06/Oracle/Test.hs
Normal file
|
@ -0,0 +1,111 @@
|
|||
{-# LANGUAGE DataKinds #-}
|
||||
{-# LANGUAGE DeriveAnyClass #-}
|
||||
{-# LANGUAGE DeriveGeneric #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
{-# LANGUAGE MultiParamTypeClasses #-}
|
||||
{-# LANGUAGE NoImplicitPrelude #-}
|
||||
{-# LANGUAGE NumericUnderscores #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE ScopedTypeVariables #-}
|
||||
{-# LANGUAGE TemplateHaskell #-}
|
||||
{-# LANGUAGE TypeApplications #-}
|
||||
{-# LANGUAGE TypeFamilies #-}
|
||||
{-# LANGUAGE TypeOperators #-}
|
||||
|
||||
module Week06.Oracle.Test where
|
||||
|
||||
import Control.Monad hiding (fmap)
|
||||
import Control.Monad.Freer.Extras as Extras
|
||||
import Data.Default (Default (..))
|
||||
import qualified Data.Map as Map
|
||||
import Data.Monoid (Last (..))
|
||||
import Data.Text (Text)
|
||||
import Ledger
|
||||
import Ledger.Value as Value
|
||||
import Ledger.Ada as Ada
|
||||
import Plutus.Contract as Contract
|
||||
import Plutus.Trace.Emulator as Emulator
|
||||
import PlutusTx.Prelude hiding (Semigroup(..), unless)
|
||||
import Prelude (IO, Semigroup(..), Show (..))
|
||||
import Wallet.Emulator.Wallet
|
||||
|
||||
import Week06.Oracle.Core
|
||||
import Week06.Oracle.Funds
|
||||
import Week06.Oracle.Swap
|
||||
|
||||
assetSymbol :: CurrencySymbol
|
||||
assetSymbol = "ff"
|
||||
|
||||
assetToken :: TokenName
|
||||
assetToken = "USDT"
|
||||
|
||||
test :: IO ()
|
||||
test = runEmulatorTraceIO' def emCfg def myTrace
|
||||
where
|
||||
emCfg :: EmulatorConfig
|
||||
emCfg = EmulatorConfig $ Left $ Map.fromList [(Wallet i, v) | i <- [1 .. 10]]
|
||||
|
||||
v :: Value
|
||||
v = Ada.lovelaceValueOf 100_000_000 <>
|
||||
Value.singleton assetSymbol assetToken 100_000_000
|
||||
|
||||
checkOracle :: Oracle -> Contract () Empty Text a
|
||||
checkOracle oracle = do
|
||||
m <- findOracle oracle
|
||||
case m of
|
||||
Nothing -> return ()
|
||||
Just (_, _, x) -> Contract.logInfo $ "Oracle value: " ++ show x
|
||||
Contract.waitNSlots 1 >> checkOracle oracle
|
||||
|
||||
myTrace :: EmulatorTrace ()
|
||||
myTrace = do
|
||||
let op = OracleParams
|
||||
{ opFees = 1_000_000
|
||||
, opSymbol = assetSymbol
|
||||
, opToken = assetToken
|
||||
}
|
||||
|
||||
h1 <- activateContractWallet (Wallet 1) $ runOracle op
|
||||
void $ Emulator.waitNSlots 1
|
||||
oracle <- getOracle h1
|
||||
|
||||
void $ activateContractWallet (Wallet 2) $ checkOracle oracle
|
||||
|
||||
callEndpoint @"update" h1 1_500_000
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
void $ activateContractWallet (Wallet 1) ownFunds'
|
||||
void $ activateContractWallet (Wallet 3) ownFunds'
|
||||
void $ activateContractWallet (Wallet 4) ownFunds'
|
||||
void $ activateContractWallet (Wallet 5) ownFunds'
|
||||
|
||||
h3 <- activateContractWallet (Wallet 3) $ swap oracle
|
||||
h4 <- activateContractWallet (Wallet 4) $ swap oracle
|
||||
h5 <- activateContractWallet (Wallet 5) $ swap oracle
|
||||
|
||||
callEndpoint @"offer" h3 10_000_000
|
||||
callEndpoint @"offer" h4 20_000_000
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
callEndpoint @"use" h5 ()
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
callEndpoint @"update" h1 1_700_000
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
callEndpoint @"use" h5 ()
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
callEndpoint @"update" h1 1_800_000
|
||||
void $ Emulator.waitNSlots 3
|
||||
|
||||
callEndpoint @"retrieve" h3 ()
|
||||
callEndpoint @"retrieve" h4 ()
|
||||
void $ Emulator.waitNSlots 3
|
||||
where
|
||||
getOracle :: ContractHandle (Last Oracle) OracleSchema Text -> EmulatorTrace Oracle
|
||||
getOracle h = do
|
||||
l <- observableState h
|
||||
case l of
|
||||
Last Nothing -> Emulator.waitNSlots 1 >> getOracle h
|
||||
Last (Just oracle) -> Extras.logInfo (show oracle) >> return oracle
|
Loading…
Reference in a new issue