// Ensure a dependency-less target can be parsed.
func TestParser_Parse_NoDependencies(t *testing.T) {
path := MustTempDir()
defer MustRemoveAll(path)
MustWriteFile(filepath.Join(path, "Bakefile.lua"), []byte(`
target("bin/flynn-host", function()
exec "run1.sh"
exec "run2.sh"
end)
`))
// Parse directory.
p := bake.NewParser()
if err := p.ParseDir(path); err != nil {
t.Fatal(err)
}
// Parse directory and retrieve target from package.
target := p.Package.Target("bin/flynn-host")
if target == nil {
t.Fatal("expected target")
} else if len(target.Dependencies) != 0 {
t.Fatalf("unexpected dependencies: %v", target.Dependencies)
} else if !reflect.DeepEqual(target.Commands, []bake.Command{
&bake.ExecCommand{Args: []string{"run1.sh"}},
&bake.ExecCommand{Args: []string{"run2.sh"}},
}) {
t.Fatalf("unexpected commands: %s", spew.Sdump(target.Commands))
}
}
// Ensure a target can be parsed with dependencies.
func TestParser_Parse_Dependencies(t *testing.T) {
path := MustTempDir()
defer MustRemoveAll(path)
MustWriteFile(filepath.Join(path, "Bakefile.lua"), []byte(`
target("bin/flynn-host", depends("A", "B"), function() end)
`))
// Parse directory.
p := bake.NewParser()
if err := p.ParseDir(path); err != nil {
t.Fatal(err)
}
// Retrieve target from package.
target := p.Package.Target("bin/flynn-host")
if target == nil {
t.Fatal("expected target")
} else if !reflect.DeepEqual(target.Dependencies, []string{"A", "B"}) {
t.Fatalf("unexpected denpendencies: %v", target.Dependencies)
}
}
// Run executes the program.
func (m *Main) Run() error {
// Validate arguments.
if m.Root == "" {
return errors.New("project root required")
} else if m.DataDir == "" {
return errors.New("data directory required")
}
// Ensure root is an absolute path.
root, err := filepath.Abs(m.Root)
if err != nil {
return fmt.Errorf("abs path: %s", err)
}
m.Root = root
// Initialize snapshot.
ss := bake.NewSnapshot(filepath.Join(m.DataDir, m.Root, SnapshotFile), m.Root)
// Parse build rules.
parser := bake.NewParser()
if err := parser.ParseDir(m.Root); err != nil {
return err
}
pkg := parser.Package
// If no targets are specified then build all targets.
if len(m.Targets) == 0 {
m.Targets = pkg.TargetNames()
}
// Create planner. Only use snapshot if not force building.
p := bake.NewPlanner(pkg)
if !m.Force {
p.Snapshot = ss
}
// Create build plan.
build, err := p.Plan(m.Targets)
if err != nil {
return err
} else if build == nil {
fmt.Fprintln(m.Stderr, "nothing to build, exiting")
return nil
}
defer build.Close()
// Recursively attach all readers to stdout/stderr.
m.pipeReaders(build, make(map[*bake.Build]struct{}))
// Create mount directory.
mountPath, err := ioutil.TempDir("", "bake-")
if err != nil {
return err
}
defer os.Remove(mountPath)
// Create file system.
fs, err := m.openFileSystem(mountPath)
if err != nil {
return err
}
defer m.closeFileSystem(fs)
// Execute the build.
if err := m.build(build, fs, ss); err != nil {
return err
}
return nil
}