Ejemplo n.º 1
0
func (c *ServiceClient) attemptSend(timeout chan bool, attempts chan sendAttempt, ri *skynet.RequestInfo, fn string, in interface{}) {

	ts("attemptSend")
	defer te("attemptSend")

	// first find an available instance
	var instance *skynet.ServiceInfo
	var r pools.Resource
	var err error
	for r == nil {
		var ok bool
		instance, ok = c.chooser.Choose(timeout)
		if !ok {
			dbg("timed out")
			// must have timed out
			return
		}
		dbg("chose", getInstanceKey(instance))
		sp := c.instances[getInstanceKey(instance)]

		// then, get a connection to that instance
		dbg("acquiring connection")
		r, err = sp.pool.Acquire()
		dbgerr("sp.pool.Acquire", err)
		dbg("acquired connection")
		defer sp.pool.Release(r)
		if err != nil {
			if r != nil {
				r.Close()
			}
			// TODO: report connection failure
			c.chooser.Remove(instance)
			c.Log.Item(FailedConnection{err})
		}
	}

	if err != nil {
		c.Log.Item(err)
		attempts <- sendAttempt{err: err}
		return
	}

	sr := r.(ServiceResource)

	result, serviceErr, err := c.sendToInstance(sr, ri, fn, in)
	dbgerr("c.sendToInstance", err)
	if err != nil {
		// some communication error happened, shut down this connection and remove it from the pool
		sr.Close()
		// and remove the instance from the chooser
		c.chooser.Remove(instance)
		return
	}

	attempts <- sendAttempt{
		result: result,
		err:    serviceErr,
	}
}
Ejemplo n.º 2
0
func (c *ServiceClient) attemptSend(timeout chan bool, attempts chan sendAttempt, ri *skynet.RequestInfo, fn string, in interface{}) {
	// first find an available instance
	var r pools.Resource
	var err error
	for r == nil {
		instance, ok := c.chooser.Choose(timeout)
		if !ok {
			// must have timed out
			return
		}
		sp := c.instances[getInstanceKey(instance)]

		// then, get a connection to that instance
		r, err = sp.pool.Acquire()
		defer sp.pool.Release(r)
		if err != nil {
			if r != nil {
				r.Close()
			}
			// TODO: report connection failure
			c.chooser.Remove(instance)
			c.Log.Item(FailedConnection{err})
		}
	}

	if err != nil {
		c.Log.Item(err)
		attempts <- sendAttempt{err: err}
		return
	}

	sr := r.(ServiceResource)

	result, err := c.sendToInstance(sr, ri, fn, in)

	attempts <- sendAttempt{
		result: result,
		err:    err,
	}
}