github.com/axw/juju@v0.0.0-20161005053422-4bd6544d08d4/worker/metrics/collect/export_test.go (about)

     1  // Copyright 2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package collect
     5  
     6  import (
     7  	"github.com/juju/juju/worker/metrics/spool"
     8  	"github.com/juju/juju/worker/uniter/runner"
     9  )
    10  
    11  var (
    12  	// NewCollect allows patching the function that creates the metric collection
    13  	// entity.
    14  	NewCollect = newCollect
    15  
    16  	// NewRecorder allows patching the function that creates the metric recorder.
    17  	NewRecorder = &newRecorder
    18  
    19  	// NewHookContext returns a new hook context used to collect metrics.
    20  	// It is exported here for calling from tests, but not patching.
    21  	NewHookContext = newHookContext
    22  
    23  	// ReadCharm reads the charm directory and returns the charm url and
    24  	// metrics declared by the charm.
    25  	ReadCharm = &readCharm
    26  
    27  	// NewSocketListener creates a new socket listener with the provided
    28  	// socket path and connection handler.
    29  	NewSocketListener = &newSocketListener
    30  )
    31  
    32  // Ensure hookContext is a runner.Context.
    33  var _ runner.Context = (*hookContext)(nil)
    34  
    35  type handlerSetterStopper interface {
    36  	SetHandler(spool.ConnectionHandler)
    37  	Stop() error
    38  }
    39  
    40  func NewSocketListenerFnc(listener handlerSetterStopper) func(string, spool.ConnectionHandler) (stopper, error) {
    41  	return func(_ string, handler spool.ConnectionHandler) (stopper, error) {
    42  		listener.SetHandler(handler)
    43  		return listener, nil
    44  	}
    45  }