Storage

This class allows to permanently store bot-specific data in a sqlite database (dexbot.sqlite) using:

self["key"] = "value"

Note

Here, self refers to the instance of your bot’s strategy when coding yaour own strategy.

The value is persistently stored and can be access later on using:

print(self["key"]).

Note

This applies a json.loads(json.dumps(value))!

SQLite database

The user’s data is stored in its OS protected user directory:

OSX:

• ~/Library/Application Support/<AppName>

Windows:

• C:Documents and Settings<User>Application DataLocal Settings<AppAuthor><AppName>
• C:Documents and Settings<User>Application Data<AppAuthor><AppName>

Linux:

• ~/.local/share/<AppName>

Where <AppName> is dexbot and <AppAuthor> is ChainSquad GmbH.

Simple example

from dexbot.basestrategy import BaseStrategy


class Strategy(BaseStrategy):
    """
    Storage demo strategy
    Strategy that prints all new blocks in the blockchain
    """

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.ontick += self.tick

    def tick(self, i):
        print("previous block: %s" % self["block"])
        print("new block: %s" % i)
        self["block"] = i

Example Output:

Current Wallet Passphrase:
previous block: None
new block: 008c4c2424e6394ad4bf5a9756ae2ee883b0e049
previous block: 008c4c2424e6394ad4bf5a9756ae2ee883b0e049
new block: 008c4c257a76671144fdba251e4ebbe61e4593a4
previous block: 008c4c257a76671144fdba251e4ebbe61e4593a4
new block: 008c4c2617851b31d0b872e32fbff6f8248663a3