systems.composable.dropwizard.cassandra.speculativeexecution.ConstantSpeculativeExecutionPolicyFactory Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of dropwizard-cassandra Show documentation

Cassandra library for Dropwizard

There is a newer version: 4.1.0

package systems.composable.dropwizard.cassandra.speculativeexecution;

import com.datastax.driver.core.policies.ConstantSpeculativeExecutionPolicy;
import com.datastax.driver.core.policies.SpeculativeExecutionPolicy;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import io.dropwizard.util.Duration;

import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;

/**
 * A factory for configuring and building {@link ConstantSpeculativeExecutionPolicy} instances.
 * 
 * Configuration Parameters:
 * 
 *     
 *         
 *         
 *         
 *     
 *     
 *         
 *         
 *         
 *     
 *     
 *         
 *         
 *         
 *     
 * Name Default Description
delay No default. You must provide a value. The delay between each speculative execution. Must be strictly positive.
maxSpeculativeExecutions No default. You must provide a value. The number of speculative executions. Must be strictly positive.
 */
@JsonTypeName("constant")
public class ConstantSpeculativeExecutionPolicyFactory implements SpeculativeExecutionPolicyFactory {

    @NotNull
    private Duration delay;

    @NotNull
    @Min(1)
    private Integer maxSpeculativeExecutions;

    @JsonProperty
    public Duration getDelay() {
        return delay;
    }

    @JsonProperty
    public void setDelay(Duration delay) {
        this.delay = delay;
    }

    @JsonProperty
    public Integer getMaxSpeculativeExecutions() {
        return maxSpeculativeExecutions;
    }

    @JsonProperty
    public void setMaxSpeculativeExecutions(Integer maxSpeculativeExecutions) {
        this.maxSpeculativeExecutions = maxSpeculativeExecutions;
    }

    @Override
    public SpeculativeExecutionPolicy build() {
        return new ConstantSpeculativeExecutionPolicy(delay.toMilliseconds(), maxSpeculativeExecutions);
    }
}

Name	Default	Description
delay	No default. You must provide a value.	The delay between each speculative execution. Must be strictly positive.
maxSpeculativeExecutions	No default. You must provide a value.	The number of speculative executions. Must be strictly positive.