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Convex core libraries and common utilities
package convex.core;
import java.nio.charset.StandardCharsets;
import java.time.Instant;
import convex.core.data.ACell;
import convex.core.data.AString;
import convex.core.data.AVector;
import convex.core.data.Format;
import convex.core.data.Strings;
import convex.core.data.Vectors;
import convex.core.data.prim.CVMBool;
/**
* Static class for global configuration constants that affect protocol
* behaviour
*/
public class Constants {
/**
* Limit of scheduled transactions run in a single Block
*/
public static final long MAX_SCHEDULED_TRANSACTIONS_PER_BLOCK = 100;
/**
* Threshold of stake required to propose consensus
*/
public static final double PROPOSAL_THRESHOLD = 0.67;
/**
* Threshold of stake required to confirm consensus
*/
public static final double CONSENSUS_THRESHOLD = 0.67;
/**
* Initial timestamp for new States
*/
public static final long INITIAL_TIMESTAMP = Instant.parse("2020-02-02T00:20:20.0202Z").toEpochMilli();
/**
* Juice price in the initial Genesis State
*/
public static final long INITIAL_JUICE_PRICE = 2L;
/**
* Initial memory Pool of 1gb
*/
public static final long INITIAL_MEMORY_POOL = 1000000000L;
/**
* Initial memory price per byte
*/
public static final long INITIAL_MEMORY_PRICE = 1000L;
/**
* Memory Pool of growth increment 1mn
*/
public static final long MEMORY_POOL_GROWTH = 1000000L;
/**
* Memory Pool of growth interval (once per day)
*/
public static final long MEMORY_POOL_GROWTH_INTERVAL = 1000L*24*3600;
/**
* Max juice allowable during execution of a single transaction.
*/
public static final long MAX_TRANSACTION_JUICE = 1000000;
/**
* Constant to set deletion of Etch temporary files on exit. Probably should be true, unless you want to dubug temp files.
*/
public static final boolean ETCH_DELETE_TEMP_ON_EXIT = true;
/**
* Sequence number used for any new account
*/
public static final long INITIAL_SEQUENCE = 0;
/**
* Size in bytes of constant overhead applied per non-embedded Cell in memory accounting
*/
public static final long MEMORY_OVERHEAD = 64;
/**
* Default timeout in milliseconds for client transactions
*/
public static final long DEFAULT_CLIENT_TIMEOUT = 10000;
/**
* Allowance for initial user / peer accounts
*/
public static final long INITIAL_ACCOUNT_ALLOWANCE = 10000000;
/**
* Maximum supply of Convex Coins set at protocol level
*/
public static final long MAX_SUPPLY = Coin.SUPPLY;
/**
* Maximum CVM execution depth
*/
public static final int MAX_DEPTH = 256;
/**
* Initial global values for a new State
*/
public static final AVector INITIAL_GLOBALS = Vectors.of(
Constants.INITIAL_TIMESTAMP, 0L, Constants.INITIAL_JUICE_PRICE,Constants.INITIAL_MEMORY_POOL,Constants.INITIAL_MEMORY_POOL*Constants.INITIAL_MEMORY_PRICE);
/**
* Maximum length of a symbolic name in bytes (keywords and symbols)
*
* Note: Chosen so that small qualified symbolic values are always embedded
*/
public static final int MAX_NAME_LENGTH = 128;
/**
* Value used to indicate inclusion of a key in a Set. Must be a singleton instance
*/
public static final CVMBool SET_INCLUDED = CVMBool.TRUE;
/**
* Value used to indicate exclusion of a key from a Set. Must be a singleton instance
*/
public static final CVMBool SET_EXCLUDED = CVMBool.FALSE;
/**
* Length for public keys
*/
public static final int KEY_LENGTH = 32;
/**
* Length for Hash values
*/
public static final int HASH_LENGTH = 32;
/**
* Default number of outgoing connections for a Peer
*/
public static final Integer DEFAULT_OUTGOING_CONNECTION_COUNT = 20;
/**
* Number of milliseconds average time to drop low-staked Peers
*/
public static final double PEER_CONNECTION_DROP_TIME = 20000;
/**
* Minimum stake for a Peer to be considered by other Peers in consensus
*/
public static final long MINIMUM_EFFECTIVE_STAKE = Coin.GOLD*1;
/**
* Default size for client receive ByteBuffers.
*/
public static final int RECEIVE_BUFFER_SIZE = Format.LIMIT_ENCODING_LENGTH*10+20;
/**
* Size of default server socket receive buffer
*/
public static final int SOCKET_SERVER_BUFFER_SIZE = 16*65536;
/**
* Size of default server socket buffers for an outbound peer connection
*/
public static final int SOCKET_PEER_BUFFER_SIZE = 16*65536;
/**
* Size of default client socket receive buffer
*/
public static final int SOCKET_RECEIVE_BUFFER_SIZE = 65536;
/**
* Size of default client socket send buffer
*/
public static final int SOCKET_SEND_BUFFER_SIZE = 2*65536;
/**
* Delay before rebroadcasting Belief if not in consensus
*/
public static final long MAX_REBROADCAST_DELAY = 200;
/**
* Timeout for syncing with an existing Peer
*/
public static final long PEER_SYNC_TIMEOUT = 60000;
/**
* Number of fields in a Peer STATUS message
*/
public static final long STATUS_COUNT = 9;
/**
* Default port for Convex Peers
*/
public static final int DEFAULT_PEER_PORT = 18888;
/**
* Option for static compilation support. Set to true for static inlines on core
*/
// TODO: Should ultimately be true for production usage
public static final boolean OPT_STATIC = true;
/**
* Char to represent bad Unicode characters in printing
*/
public static final char BAD_CHARACTER = '\uFFFD';
public static final byte[] BAD_CHARACTER_BYTES = new byte[] {(byte) 0xff, (byte) 0xfd };
public static final String BAD_CHARACTER_STRING = new String(BAD_CHARACTER_BYTES, StandardCharsets.UTF_8);
public static final byte[] BAD_CHARACTER_UTF = BAD_CHARACTER_STRING.getBytes(StandardCharsets.UTF_8);
/**
* Default print limit
*/
public static final long PRINT_LIMIT = 4096;
public static final AString PRINT_EXCEEDED_MESSAGE = Strings.create("<>");
/**
* Default size for incoming client transaction queue
* Note: this limits TPS for client transactions, will send failures if overloaded
*/
public static final int TRANSACTION_QUEUE_SIZE = 1000;
public static final int QUERY_QUEUE_SIZE = 1000;
/**
* Size of incoming Belief queue
*/
public static final int BELIEF_QUEUE_SIZE = 500;
/**
* Minimum milliseconds to retain a proposal before switching
*/
public static final long KEEP_PROPOSAL_TIME = 1000;
/**
* Number of consensus levels (blocks, proposed, consensus)
*/
public static final int CONSENSUS_LEVELS = 4;
public static final int CONSENSUS_LEVEL_PROPOSAL = CONSENSUS_LEVELS-3;
public static final int CONSENSUS_LEVEL_CONSENSUS = CONSENSUS_LEVELS-2;
public static final int CONSENSUS_LEVEL_FINALITY = CONSENSUS_LEVELS-1;
}
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