42 lines
1 KiB
Python
42 lines
1 KiB
Python
import hashlib
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import os
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HASH_CLASS = hashlib.sha384 # pylint: disable=invalid-name
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HASH_LENGTH = HASH_CLASS().digest_size
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HASH_BITS = HASH_LENGTH * 8
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ALPHA = 5
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K = 8
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SPLIT_BUCKETS_UNDER_INDEX = 1
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REPLACEMENT_CACHE_SIZE = 8
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RPC_TIMEOUT = 5.0
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RPC_ATTEMPTS = 5
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RPC_ATTEMPTS_PRUNING_WINDOW = 600
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ITERATIVE_LOOKUP_DELAY = RPC_TIMEOUT / 2.0 # TODO: use config val / 2 if rpc timeout is provided
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REFRESH_INTERVAL = 3600 # 1 hour
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REPLICATE_INTERVAL = REFRESH_INTERVAL
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DATA_EXPIRATION = 86400 # 24 hours
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TOKEN_SECRET_REFRESH_INTERVAL = 300 # 5 minutes
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MAYBE_PING_DELAY = 300 # 5 minutes
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CHECK_REFRESH_INTERVAL = REFRESH_INTERVAL / 5
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RPC_ID_LENGTH = 20
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PROTOCOL_VERSION = 1
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BOTTOM_OUT_LIMIT = 3
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MSG_SIZE_LIMIT = 1400
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def digest(data: bytes) -> bytes:
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h = HASH_CLASS()
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h.update(data)
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return h.digest()
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def generate_id(num=None) -> bytes:
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if num is not None:
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return digest(str(num).encode())
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else:
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return digest(os.urandom(32))
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def generate_rpc_id(num=None) -> bytes:
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return generate_id(num)[:RPC_ID_LENGTH]
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