tools/cost_model_evaluate/config.py

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from dataclasses import dataclass

@dataclass
class Config:
    # user for mysql client
    user: str
    # password for mysql client
    password: str
    # host of mysql client
    host: str
    # post of mysql client
    port: int
    # database of query that used to evaluated
    database: str
    # execute times for one plan of the query. Note a query can generate multiple plans
    execute_times: int
    # the number of generate plans for one query. Note if the number > the possible plans, 
    # we will only use the valid plans.   
    plan_number: int
    # Does plot the relation of cost and time
    plot: bool
    # run the query before really evaluate, just for avoiding cold running
    cold_run: int