func realMain() int {
var wrapConfig panicwrap.WrapConfig
if !panicwrap.Wrapped(&wrapConfig) {
// Determine where logs should go in general (requested by the user)
logWriter, err := logging.LogOutput()
if err != nil {
fmt.Fprintf(os.Stderr, "Couldn't setup log output: %s", err)
return 1
}
// We always send logs to a temporary file that we use in case
// there is a panic. Otherwise, we delete it.
logTempFile, err := ioutil.TempFile("", "terraform-log")
if err != nil {
fmt.Fprintf(os.Stderr, "Couldn't setup logging tempfile: %s", err)
return 1
}
defer os.Remove(logTempFile.Name())
defer logTempFile.Close()
// Setup the prefixed readers that send data properly to
// stdout/stderr.
doneCh := make(chan struct{})
outR, outW := io.Pipe()
go copyOutput(outR, doneCh)
// Create the configuration for panicwrap and wrap our executable
wrapConfig.Handler = panicHandler(logTempFile)
wrapConfig.Writer = io.MultiWriter(logTempFile, logWriter)
wrapConfig.Stdout = outW
exitStatus, err := panicwrap.Wrap(&wrapConfig)
if err != nil {
fmt.Fprintf(os.Stderr, "Couldn't start Terraform: %s", err)
return 1
}
// If >= 0, we're the parent, so just exit
if exitStatus >= 0 {
// Close the stdout writer so that our copy process can finish
outW.Close()
// Wait for the output copying to finish
<-doneCh
return exitStatus
}
// We're the child, so just close the tempfile we made in order to
// save file handles since the tempfile is only used by the parent.
logTempFile.Close()
}
// Call the real main
return wrappedMain()
}
// Test performs an acceptance test on a resource.
//
// Tests are not run unless an environmental variable "TF_ACC" is
// set to some non-empty value. This is to avoid test cases surprising
// a user by creating real resources.
//
// Tests will fail unless the verbose flag (`go test -v`, or explicitly
// the "-test.v" flag) is set. Because some acceptance tests take quite
// long, we require the verbose flag so users are able to see progress
// output.
func Test(t TestT, c TestCase) {
// We only run acceptance tests if an env var is set because they're
// slow and generally require some outside configuration.
if os.Getenv(TestEnvVar) == "" {
t.Skip(fmt.Sprintf(
"Acceptance tests skipped unless env '%s' set",
TestEnvVar))
return
}
logWriter, err := logging.LogOutput()
if err != nil {
t.Error(fmt.Errorf("error setting up logging: %s", err))
}
log.SetOutput(logWriter)
// We require verbose mode so that the user knows what is going on.
if !testTesting && !testing.Verbose() {
t.Fatal("Acceptance tests must be run with the -v flag on tests")
return
}
// Run the PreCheck if we have it
if c.PreCheck != nil {
c.PreCheck()
}
// Build our context options that we can
ctxProviders := c.ProviderFactories
if ctxProviders == nil {
ctxProviders = make(map[string]terraform.ResourceProviderFactory)
for k, p := range c.Providers {
ctxProviders[k] = terraform.ResourceProviderFactoryFixed(p)
}
}
opts := terraform.ContextOpts{Providers: ctxProviders}
// A single state variable to track the lifecycle, starting with no state
var state *terraform.State
// Go through each step and run it
for i, step := range c.Steps {
var err error
log.Printf("[WARN] Test: Executing step %d", i)
state, err = testStep(opts, state, step)
if err != nil {
t.Error(fmt.Sprintf(
"Step %d error: %s", i, err))
break
}
}
// If we have a state, then run the destroy
if state != nil {
destroyStep := TestStep{
Config: c.Steps[len(c.Steps)-1].Config,
Check: c.CheckDestroy,
Destroy: true,
}
log.Printf("[WARN] Test: Executing destroy step")
state, err := testStep(opts, state, destroyStep)
if err != nil {
t.Error(fmt.Sprintf(
"Error destroying resource! WARNING: Dangling resources\n"+
"may exist. The full state and error is shown below.\n\n"+
"Error: %s\n\nState: %s",
err,
state))
}
} else {
log.Printf("[WARN] Skipping destroy test since there is no state.")
}
}