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/*
* Copyright (c) 2022 AtLarge Research
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.opendc.web.server.model;
import io.hypersistence.utils.hibernate.type.json.JsonType;
import io.quarkus.hibernate.orm.panache.Panache;
import io.quarkus.hibernate.orm.panache.PanacheEntityBase;
import io.quarkus.hibernate.orm.panache.PanacheQuery;
import io.quarkus.panache.common.Parameters;
import jakarta.persistence.*;
import java.time.Instant;
import java.util.Map;
import org.hibernate.annotations.Type;
import org.opendc.web.proto.JobState;
/**
* A simulation job to be run by the simulator.
*/
@Entity
@Table
@NamedQueries({
@NamedQuery(
name = "Job.updateOne",
query =
"""
UPDATE Job j
SET j.state = :newState, j.updatedAt = :updatedAt, j.runtime = :runtime, j.results = :results
WHERE j.id = :id AND j.state = :oldState
""")
})
public class Job extends PanacheEntityBase {
/**
* The main ID of a project.
* The value starts at 6 to account for the other 5 projects already made by the loading script.
*/
@Id
@SequenceGenerator(name = "jobSeq", sequenceName = "job_id_seq", allocationSize = 1, initialValue = 3)
@GeneratedValue(generator = "jobSeq")
public Long id;
@ManyToOne(optional = false, fetch = FetchType.EAGER)
@JoinColumn(name = "scenario_id", foreignKey = @ForeignKey(name = "fk_jobs_scenario"), nullable = false)
public Scenario scenario;
@Column(name = "created_by", nullable = false, updatable = false)
public String createdBy;
@Column(name = "created_at", nullable = false, updatable = false)
public Instant createdAt;
/**
* The number of simulation runs to perform.
*/
@Column(nullable = false, updatable = false)
public int repeats;
/**
* The instant at which the job was updated.
*/
@Column(name = "updated_at", nullable = false)
public Instant updatedAt;
/**
* The state of the job.
*/
@Enumerated(EnumType.STRING)
@Column(nullable = false)
public JobState state = JobState.PENDING;
/**
* The runtime of the job (in seconds).
*/
@Column(nullable = false)
public int runtime = 0;
/**
* Experiment results in JSON
*/
@Column(columnDefinition = "jsonb")
@Type(JsonType.class)
public Map<String, ?> results = null;
/**
* Construct a {@link Job} instance.
*/
public Job(Scenario scenario, String createdBy, Instant createdAt, int repeats) {
this.createdBy = createdBy;
this.scenario = scenario;
this.createdAt = createdAt;
this.updatedAt = createdAt;
this.repeats = repeats;
}
/**
* JPA constructor
*/
protected Job() {}
/**
* Find {@link Job}s in the specified {@link JobState}.
*
* @param state The state of the jobs to find.
* @return A query for jobs that are in the specified state.
*/
public static PanacheQuery<Job> findByState(JobState state) {
return find("state", state);
}
/**
* Atomically update this job.
*
* @param newState The new state to enter into.
* @param time The time at which the update occurs.
* @param results The results to possible set.
* @return <code>true</code> when the update succeeded`, <code>false</code> when there was a conflict.
*/
public boolean updateAtomically(JobState newState, Instant time, int runtime, Map<String, ?> results) {
long count = update(
"#Job.updateOne",
Parameters.with("id", id)
.and("oldState", state)
.and("newState", newState)
.and("updatedAt", time)
.and("runtime", runtime)
.and("results", results));
Panache.getEntityManager().refresh(this);
return count > 0;
}
/**
* Determine whether the job is allowed to transition to <code>newState</code>.
*
* @param newState The new state to transition to.
* @return <code>true</code> if the transition to the new state is legal, <code>false</code> otherwise.
*/
public boolean canTransitionTo(JobState newState) {
// Note that we always allow transitions from the state
return newState == this.state
|| switch (this.state) {
case PENDING -> newState == JobState.CLAIMED;
case CLAIMED -> newState == JobState.RUNNING || newState == JobState.FAILED;
case RUNNING -> newState == JobState.FINISHED || newState == JobState.FAILED;
case FINISHED, FAILED -> false;
};
}
}
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