use float64 to support docker-compose cpu syntax

yaml/compiler/convert.go

@@ -84,7 +84,14 @@ func toResourceObject(from *yaml.ResourceObject) *engine.ResourceObject {
 		return nil
 	}
 	return &engine.ResourceObject{
-		CPU:    from.CPU,
+		CPU:    toCPUMillis(from.CPU),
 		Memory: int64(from.Memory),
 	}
 }
+
+func toCPUMillis(f float64) int64 {
+	if f > 0 {
+		f *= 1000
+	}
+	return int64(f)
+}

yaml/compiler/convert_test.go

@@ -136,9 +136,11 @@ func Test_toResources(t *testing.T) {
 		Resources: &yaml.Resources{
 			Limits: &yaml.ResourceObject{
 				Memory: yaml.BytesSize(1000),
+				CPU:    4,
 			},
 			Requests: &yaml.ResourceObject{
 				Memory: yaml.BytesSize(2000),
+				CPU:    0.1,
 			},
 		},
 	}
@@ -146,9 +148,11 @@ func Test_toResources(t *testing.T) {
 	b = &engine.Resources{
 		Limits: &engine.ResourceObject{
 			Memory: 1000,
+			CPU:    4000,
 		},
 		Requests: &engine.ResourceObject{
 			Memory: 2000,
+			CPU:    100,
 		},
 	}
 	if diff := cmp.Diff(a, b); diff != "" {

yaml/pipeline.go

@@ -97,7 +97,7 @@ type (
 	// ResourceObject describes compute resource
 	// requirements.
 	ResourceObject struct {
-		CPU    int64     `json:"cpu" yaml:"cpu"`
+		CPU    float64   `json:"cpu" yaml:"cpu"`
 		Memory BytesSize `json:"memory"`
 	}