// checkRecovering checks if the backend can be recovered.
func (m *systemMonitor) checkRecovering(rs loop.Recoverings) (loop.Recoverings, error) {
if rs.Frequency(12, time.Minute) {
logger.Errorf("monitor cannot be recovered: %v", rs.Last().Reason)
return nil, errors.New(ErrMonitorCannotBeRecovered, errorMessages, rs.Last().Reason)
}
logger.Warningf("monitor recovered: %v", rs.Last().Reason)
return rs.Trim(12), nil
}
// command sends a command to the system monitor and waits for a response.
func (m *systemMonitor) command(opCode int, args interface{}) (interface{}, error) {
cmd := &command{opCode, args, make(chan interface{})}
m.commandChan <- cmd
resp, ok := <-cmd.respChan
if !ok {
return nil, errors.New(ErrMonitorPanicked, errorMessages)
}
if err, ok := resp.(error); ok {
return nil, err
}
return resp, nil
}
// Test the validation.
func TestValidation(t *testing.T) {
assert := asserts.NewTestingAssertion(t, true)
ec := 1
messages := errors.Messages{ec: "valid"}
err := errors.New(ec, messages)
fileName, line, lerr := errors.Location(err)
assert.True(errors.Valid(err))
assert.Nil(lerr)
assert.Equal(fileName, "errors_test.go")
assert.Equal(line, 31)
}
// Test the validation.
func TestValidation(t *testing.T) {
assert := asserts.NewTestingAssertion(t, true)
ec := 1
messages := errors.Messages{ec: "valid"}
err := errors.New(ec, messages)
packageName, fileName, line, lerr := errors.Location(err)
assert.True(errors.Valid(err))
assert.Nil(lerr)
assert.Equal(packageName, "github.com/tideland/goas/v3/errors_test")
assert.Equal(fileName, "errors_test.go")
assert.Equal(line, 31)
}
// Test creation and checking.
func TestIsError(t *testing.T) {
assert := asserts.NewTestingAssertion(t, true)
ec := 42
messages := errors.Messages{ec: "test error %d"}
err := errors.New(ec, messages, 1)
assert.ErrorMatch(err, `\[ERRORS_TEST:042\] test error 1`)
assert.True(errors.IsError(err, ec))
assert.False(errors.IsError(err, 0))
err = testError("test error 2")
assert.ErrorMatch(err, "test error 2")
assert.False(errors.IsError(err, ec))
assert.False(errors.IsError(err, 0))
}
// processCommand handles the received commands of the monitor.
func (m *systemMonitor) processCommand(cmd *command) {
defer cmd.close()
switch cmd.opCode {
case cmdReset:
// Reset monitoring.
m.init()
cmd.ok()
case cmdMeasuringPointRead:
// Read just one measuring point.
id := cmd.args.(string)
if mp, ok := m.etmData[id]; ok {
// Measuring point found.
clone := *mp
cmd.respond(&clone)
} else {
// Measuring point does not exist.
cmd.respond(errors.New(ErrMeasuringPointNotExists, errorMessages, id))
}
case cmdMeasuringPointsReadAll:
// Read all measuring points.
resp := MeasuringPoints{}
for _, mp := range m.etmData {
clone := *mp
resp = append(resp, &clone)
}
sort.Sort(resp)
cmd.respond(resp)
case cmdStaySetVariableRead:
// Read just one stay-set variable.
id := cmd.args.(string)
if ssv, ok := m.ssvData[id]; ok {
// Variable found.
clone := *ssv
cmd.respond(&clone)
} else {
// Variable does not exist.
cmd.respond(errors.New(ErrStaySetVariableNotExists, errorMessages, id))
}
case cmdStaySetVariablesReadAll:
// Read all stay-set variables.
resp := StaySetVariables{}
for _, mp := range m.ssvData {
clone := *mp
resp = append(resp, &clone)
}
sort.Sort(resp)
cmd.respond(resp)
case cmdDynamicStatusRetrieverRead:
// Read just one dynamic status value.
id := cmd.args.(string)
if dsr, ok := m.dsrData[id]; ok {
// Dynamic status found.
v, err := dsr()
if err != nil {
cmd.respond(err)
} else {
cmd.respond(v)
}
} else {
// Dynamic status does not exist.
cmd.respond(errors.New(ErrDynamicStatusNotExists, errorMessages, id))
}
case cmdDynamicStatusRetrieversReadAll:
// Read all dynamic status values.
resp := DynamicStatusValues{}
for id, dsr := range m.dsrData {
v, err := dsr()
if err != nil {
cmd.respond(err)
}
dsv := &DynamicStatusValue{id, v}
resp = append(resp, dsv)
}
sort.Sort(resp)
cmd.respond(resp)
}
}