Class: Bricolage::DAO::JobExecution

Inherits:
Object
  • Object
show all
Includes:
SQLUtils
Defined in:
lib/bricolage/dao/jobexecution.rb

Defined Under Namespace

Classes: Attributes

Constant Summary collapse

STATUS_WAITING = 
'waiting'.freeze
STATUS_SUCCEEDED = 
'succeeded'.freeze
STATUS_RUNNING = 
'running'.freeze
STATUS_FAILED = 
'failed'.freeze
STATUS_CANCELED = 
'canceled'.freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(datasource, connection: nil) ⇒ JobExecution

Returns a new instance of JobExecution.



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# File 'lib/bricolage/dao/jobexecution.rb', line 28

def initialize(datasource, connection: nil)
  @datasource = datasource
  @connection = connection
end

Class Method Details

.for_connection(conn) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 24

def JobExecution.for_connection(conn)
  new(nil, connection: conn)
end

.for_record(r) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 15

def JobExecution.for_record(r)
  Attributes.new(
    job_id: r['job_id']&.to_i,
    job_execution_id: r['job_execution_id']&.to_i,
    subsystem: r['subsystem'],
    job_name: r['job_name']
  )
end

Instance Method Details

#cancel_jobnet(jobnet_ref, message) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 99

def cancel_jobnet(jobnet_ref, message)
  connect {|conn|
    records = conn.execute_update(<<~EndSQL)
      update job_executions
      set
          status = #{s STATUS_CANCELED}
          , message = #{s message}
          , finished_at = now()
      where
          job_id in (
              select
                  j.job_id
              from
                  jobs j inner join jobnets n using (jobnet_id)
              where
                  n.subsystem = #{s jobnet_ref.subsystem}
                  and n.jobnet_name = #{s jobnet_ref.name}
          )
          and status in (#{s STATUS_WAITING}, #{s STATUS_RUNNING}, #{s STATUS_FAILED})
      returning job_execution_id
      ;
    EndSQL

    job_execution_ids = records.map {|r| r['job_execution_id'].to_i }
    unless job_execution_ids.empty?
      conn.execute_update(<<~EndSQL)
          insert into job_execution_states
              ( job_execution_id
              , job_id
              , created_at
              , status
              , message
              )
          select
              job_execution_id
              , job_id
              , finished_at
              , status
              , message
          from
              job_executions
          where
              job_execution_id in (#{job_execution_ids.join(', ')})
          ;
      EndSQL
    end
  }
end

#delete_all ⇒ Object

For tests only



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# File 'lib/bricolage/dao/jobexecution.rb', line 239

def delete_all
  connect {|conn|
    conn.execute_update(<<~EndSQL)
        delete from job_execution_states;
        delete from job_executions;
        delete from jobs;
        delete from jobnets;
    EndSQL
  }
end

#enqueue_job(job, execution_sequence) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 67

def enqueue_job(job, execution_sequence)
  record = nil
  connect {|conn|
    records = conn.execute_update(<<~EndSQL)
      insert into job_executions
          ( job_id
          , execution_sequence
          , status
          , message
          , submitted_at
          )
      values
          ( #{job.id}
          , #{execution_sequence}
          , #{s STATUS_WAITING}
          , ''
          , now()
          )
      returning job_execution_id, job_id
      ;
    EndSQL

    record = records.first
    save_state_transition(conn, record['job_execution_id'], 'submitted_at')
  }

  exec = JobExecution.for_record(record)
  exec.subsystem = job.subsystem
  exec.job_name = job.job_name
  exec
end

#enqueued_jobs(jobnet_ref) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 43

def enqueued_jobs(jobnet_ref)
  records = connect {|conn|
    conn.query_rows(<<~EndSQL)
      select
          e.job_execution_id
          , e.job_id
          , j.subsystem
          , j.job_name
      from
          job_executions e
          inner join jobs j using (job_id)
          inner join jobnets n using (jobnet_id)
      where
          n.subsystem = #{s jobnet_ref.subsystem}
          and n.jobnet_name = #{s jobnet_ref.name}
          and e.status in (#{s STATUS_WAITING}, #{s STATUS_RUNNING}, #{s STATUS_FAILED})
      order by
          e.execution_sequence
      ;
    EndSQL
  }
  records.map {|r| JobExecution.for_record(r) }
end

#transition_to_failed(job_execution_id, message) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 193

def transition_to_failed(job_execution_id, message)
  connect {|conn|
    records = conn.execute_update(<<~EndSQL)
        update job_executions
        set
            finished_at = now()
            , status = #{s STATUS_FAILED}
            , message = #{s message}
        where
            job_execution_id = #{job_execution_id}
            and status = #{s STATUS_RUNNING}
        returning job_execution_id
        ;
    EndSQL
    if records.empty?
      raise IllegalJobStateException, "could not transition to failed state: job_execution_id=#{job_execution_id}"
    end

    save_state_transition(conn, job_execution_id, 'finished_at')
  }
end

#transition_to_running(job_execution_id) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 148

def transition_to_running(job_execution_id)
  connect {|conn|
    records = conn.execute_update(<<~EndSQL)
        update job_executions
        set
            status = #{s STATUS_RUNNING}
            , message = ''
            , started_at = now()
            , finished_at = null
        where
            job_execution_id = #{job_execution_id}
            and status in (#{s STATUS_WAITING}, #{s STATUS_FAILED})
        returning job_execution_id
        ;
    EndSQL
    if records.empty?
      raise IllegalJobStateException, "Could not run already running job: job_execution_id=#{job_execution_id}"
    end

    save_state_transition(conn, job_execution_id, 'started_at')
  }
end

#transition_to_succeeded(job_execution_id) ⇒ Object 



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# File 'lib/bricolage/dao/jobexecution.rb', line 171

def transition_to_succeeded(job_execution_id)
  connect {|conn|
    records = conn.execute_update(<<~EndSQL)
        update job_executions
        set
            finished_at = now()
            , status = #{s STATUS_SUCCEEDED}
            , message = ''
        where
            job_execution_id = #{job_execution_id}
            and status = #{s STATUS_RUNNING}
        returning job_execution_id
        ;
    EndSQL
    if records.empty?
      raise IllegalJobStateException, "could not transition to succeeded state: job_execution_id=#{job_execution_id}"
    end

    save_state_transition(conn, job_execution_id, 'finished_at')
  }
end