127 lines
6.5 KiB
Python
127 lines
6.5 KiB
Python
# # ⚠ Warning
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
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# LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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# NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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# [🥭 Mango Markets](https://mango.markets/) support is available at:
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# [Docs](https://docs.mango.markets/)
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# [Discord](https://discord.gg/67jySBhxrg)
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# [Twitter](https://twitter.com/mangomarkets)
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# [Github](https://github.com/blockworks-foundation)
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# [Email](mailto:hello@blockworks.foundation)
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import logging
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import multiprocessing
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import requests
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import time
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import typing
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from decimal import Decimal
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from rx.scheduler.threadpoolscheduler import ThreadPoolScheduler
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from solana.publickey import PublicKey
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from solana.rpc.commitment import Commitment
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from .client import BetterClient, ClusterUrlData, TransactionStatusCollector, NullTransactionStatusCollector
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from .constants import MangoConstants
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from .instructionreporter import InstructionReporter, CompoundInstructionReporter
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from .instrumentlookup import InstrumentLookup
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from .marketlookup import MarketLookup
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from .text import indent_collection_as_str, indent_item_by
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# # 🥭 Context class
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#
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# A `Context` object to manage Solana connection and Mango configuration.
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#
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class Context:
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def __init__(self, name: str, cluster_name: str, cluster_urls: typing.Sequence[ClusterUrlData], skip_preflight: bool,
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commitment: str, encoding: str, blockhash_cache_duration: int, http_request_timeout: float,
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stale_data_pauses_before_retry: typing.Sequence[float], mango_program_address: PublicKey,
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serum_program_address: PublicKey, group_name: str, group_address: PublicKey,
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gma_chunk_size: Decimal, gma_chunk_pause: Decimal, reflink: typing.Optional[PublicKey],
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instrument_lookup: InstrumentLookup, market_lookup: MarketLookup,
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transaction_status_collector: TransactionStatusCollector = NullTransactionStatusCollector()) -> None:
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self._logger: logging.Logger = logging.getLogger(self.__class__.__name__)
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self.name: str = name
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instruction_reporter: InstructionReporter = CompoundInstructionReporter.from_addresses(
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mango_program_address, serum_program_address)
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self.client: BetterClient = BetterClient.from_configuration(name, cluster_name, cluster_urls, Commitment(
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commitment), skip_preflight, encoding, blockhash_cache_duration, http_request_timeout, stale_data_pauses_before_retry, instruction_reporter, transaction_status_collector)
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self.mango_program_address: PublicKey = mango_program_address
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self.serum_program_address: PublicKey = serum_program_address
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self.group_name: str = group_name
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self.group_address: PublicKey = group_address
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self.gma_chunk_size: Decimal = gma_chunk_size
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self.gma_chunk_pause: Decimal = gma_chunk_pause
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self.reflink: typing.Optional[PublicKey] = reflink
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self.instrument_lookup: InstrumentLookup = instrument_lookup
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self.market_lookup: MarketLookup = market_lookup
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self.ping_interval: int = 10
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self._last_generated_client_id: int = 0
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# kangda said in Discord: https://discord.com/channels/791995070613159966/836239696467591186/847816026245693451
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# "I think you are better off doing 4,8,16,20,30"
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self.retry_pauses: typing.Sequence[Decimal] = [Decimal(4), Decimal(
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8), Decimal(16), Decimal(20), Decimal(30)]
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def create_thread_pool_scheduler(self) -> ThreadPoolScheduler:
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return ThreadPoolScheduler(multiprocessing.cpu_count())
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def generate_client_id(self) -> int:
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# Previously used a random client ID strategy, which may be appropriate for some people.
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# 9223372036854775807 is sys.maxsize for 64-bit systems, with a bit_length of 63.
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# We explicitly want to use a max of 64-bits though, so we use the number instead of
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# sys.maxsize, which could be lower on 32-bit systems or higher on 128-bit systems.
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# return random.randrange(9223372036854775807)
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#
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# After this discussion with Max on Discord (https://discord.com/channels/791995070613159966/818978757648842782/884751007656054804):
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# can you generate monotonic ids?
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# in case not the result wouldn't be different from what we have rn, which is random display
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# so there's still a net benefit for changing the UI
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# and if you could use the same id generation scheme (unix time in ms) it would even work well with the UI :slight_smile:
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#
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# We go with the time in milliseconds. We get the time in nanoseconds and divide it by 1,000,000 to get
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# the time in milliseconds.
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#
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# But there's more! Because this can be called in a burst, for, say, a dozen orders all within the same
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# millisecond. And using duplicate client order IDs would be Bad. So we keep track of the last one we
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# sent, and we just add one if we get an identical value.
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new_id: int = round(time.time_ns() / 1000000)
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if new_id <= self._last_generated_client_id:
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new_id = self._last_generated_client_id + 1
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self._last_generated_client_id = new_id
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return new_id
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def lookup_group_name(self, group_address: PublicKey) -> str:
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group_address_str = str(group_address)
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for group in MangoConstants["groups"]:
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if group["cluster"] == self.client.cluster_name and group["publicKey"] == group_address_str:
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return str(group["name"])
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return "« Unknown Group »"
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def fetch_stats(self, url_suffix: str) -> typing.Sequence[typing.Any]:
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stats_url = f"https://mango-stats-v3.herokuapp.com/{url_suffix}"
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stats_response = requests.get(stats_url)
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return typing.cast(typing.Sequence[typing.Any], stats_response.json())
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def __str__(self) -> str:
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cluster_urls: str = indent_item_by(indent_collection_as_str(self.client.cluster_urls))
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return f"""« Context '{self.name}':
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Cluster Name: {self.client.cluster_name}
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Cluster URLs:
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{cluster_urls}
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Group Name: {self.group_name}
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Group Address: {self.group_address}
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Mango Program Address: {self.mango_program_address}
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Serum Program Address: {self.serum_program_address}
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»"""
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def __repr__(self) -> str:
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return f"{self}"
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