Add nvcdi.spec package

Signed-off-by: Evan Lezar <elezar@nvidia.com>

pkg/nvcdi/spec/api.go

@@ -0,0 +1,25 @@
+/**
+# Copyright (c) NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package spec
+
+import "github.com/container-orchestrated-devices/container-device-interface/specs-go"
+
+// Interface is the interface for the spec API
+type Interface interface {
+	Save(string) error
+	Raw() *specs.Spec
+}

pkg/nvcdi/spec/spec.go

@@ -0,0 +1,60 @@
+/**
+# Copyright (c) NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package spec
+
+import (
+	"fmt"
+
+	"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
+	"github.com/container-orchestrated-devices/container-device-interface/specs-go"
+)
+
+type spec specs.Spec
+
+var _ Interface = (*spec)(nil)
+
+// New creates a new spec with the specified deivice specs and edits.
+func New(deviceSpecs []specs.Device, edits specs.ContainerEdits) (Interface, error) {
+	s := specs.Spec{
+		// TODO: Should be set through an option
+		Version: "NOT_SET",
+		// TODO: Should be set through an option
+		Kind: "nvidia.com/gpu",
+		// TODO: Should be set through an option
+		Devices: deviceSpecs,
+		// TODO: Should be set through an option
+		ContainerEdits: edits,
+	}
+
+	minVersion, err := cdi.MinimumRequiredVersion(&s)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get minumum required CDI spec version: %v", err)
+	}
+	s.Version = minVersion
+
+	return (*spec)(&s), nil
+}
+
+// Save writes the spec to the specified path and overwrites the file if it exists.
+func (s *spec) Save(path string) error {
+	return cdi.WriteSpec(s, path, true)
+}
+
+// Raw returns a pointer to the raw spec.
+func (s *spec) Raw() *specs.Spec {
+	return (*specs.Spec)(s)
+}