specs-go: add v1 types

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

specs-go/descriptor.go

@@ -0,0 +1,27 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 specs
+
+// Descriptor describes the disposition of targeted content.
+type Descriptor struct {
+	// MediaType contains the MIME type of the referenced object.
+	MediaType string `json:"mediaType"`
+
+	// Digests is the digest of the targeted content.
+	Digest string `json:"digest"`
+
+	// Size specifies the size in bytes of the blob
+	Size int64 `json:"size"`
+}

specs-go/v1/config.go

@@ -0,0 +1,99 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 v1
+
+// ImageConfig defines the execution parameters which should be used as a base when running a container using an image.
+type ImageConfig struct {
+	// User defines the username or UID which the process in the container should run as.
+	User string `json:"User"`
+
+	// Memory defines the memory limit.
+	Memory int64 `json:"Memory"`
+
+	// MemorySwap defines the total memory usage limit (memory + swap).
+	MemorySwap int64 `json:"MemorySwap"`
+
+	// CPUShares is the CPU shares (relative weight vs. other containers).
+	CPUShares int64 `json:"CpuShares"`
+
+	// ExposedPorts a set of ports to expose from a container running this image.
+	ExposedPorts map[string]struct{} `json:"ExposedPorts"`
+
+	// Env is a list of environment variables to be used in a container.
+	Env []string `json:"Env"`
+
+	// Entrypoint defines a list of arguments to use as the command to execute when the container starts.
+	EntryPoint []string `json:"EntryPoint"`
+
+	// Cmd defines the default arguments to the entry point of the container.
+	Cmd []string `json:"Cmd"`
+
+	// Volumes is a set of directories which should be created as data volumes in a container running this image.
+	Volumes map[string]struct{} `json:"Volumes"`
+
+	// WorkingDir sets the current working directory of the entry point process in the container.
+	WorkingDir string `json:"WorkingDir"`
+}
+
+// RootFS describes a layer content addresses
+type RootFS struct {
+	// Type is the type of the rootfs.
+	Type string `json:"type"`
+
+	// DiffIDs is an array of layer content hashes (DiffIDs), in order from bottom-most to top-most.
+	DiffIDs []string `json:"diff_ids"`
+}
+
+// History describes the history of a layer.
+type History struct {
+	// Created is the creation time.
+	Created string `json:"created"`
+
+	// CreatedBy is the command which created the layer.
+	CreatedBy string `json:"created_by"`
+
+	// Author is the author of the build point.
+	Author string `json:"author"`
+
+	// Comment is a custom message set when creating the layer.
+	Comment string `json:"comment"`
+
+	// EmptyLayer is used to mark if the history item created a filesystem diff.
+	EmptyLayer bool `json:"empty_layer"`
+}
+
+// Image is the JSON structure which describes some basic information about the image.
+type Image struct {
+	// Created defines an ISO-8601 formatted combined date and time at which the image was created.
+	Created string `json:"created"`
+
+	// Author defines the name and/or email address of the person or entity which created and is responsible for maintaining the image.
+	Author string `json:"author"`
+
+	// Architecture is the CPU architecture which the binaries in this image are built to run on.
+	Architecture string `json:"architecture"`
+
+	// OS is the name of the operating system which the image is built to run on.
+	OS string `json:"os"`
+
+	// Config defines the execution parameters which should be used as a base when running a container using the image.
+	Config ImageConfig `json:"config"`
+
+	// RootFS references the layer content addresses used by the image.
+	RootFS RootFS `json:"rootfs"`
+
+	// History describes the history of each layer.
+	History []History `json:"history"`
+}

specs-go/v1/manifest.go

@@ -0,0 +1,32 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 v1
+
+import "github.com/opencontainers/image-spec/specs-go"
+
+// Manifest defines a schema2 manifest
+type Manifest struct {
+	specs.Versioned
+
+	// Config references a configuration object for a container, by digest.
+	// The referenced configuration object is a JSON blob that the runtime uses to set up the container.
+	Config specs.Descriptor `json:"config"`
+
+	// Layers is an indexed list of layers referenced by the manifest.
+	Layers []specs.Descriptor `json:"layers"`
+
+	// Annotations contains arbitrary metadata for the manifest list.
+	Annotations map[string]string `json:"annotations"`
+}

specs-go/v1/manifest_list.go

@@ -0,0 +1,62 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 v1
+
+import "github.com/opencontainers/image-spec/specs-go"
+
+// Platform describes the platform which the image in the manifest runs on.
+type Platform struct {
+	// Architecture field specifies the CPU architecture, for example
+	// `amd64` or `ppc64`.
+	Architecture string `json:"architecture"`
+
+	// OS specifies the operating system, for example `linux` or `windows`.
+	OS string `json:"os"`
+
+	// OSVersion is an optional field specifying the operating system
+	// version, for example `10.0.10586`.
+	OSVersion string `json:"os.version,omitempty"`
+
+	// OSFeatures is an optional field specifying an array of strings,
+	// each listing a required OS feature (for example on Windows `win32k`).
+	OSFeatures []string `json:"os.features,omitempty"`
+
+	// Variant is an optional field specifying a variant of the CPU, for
+	// example `ppc64le` to specify a little-endian version of a PowerPC CPU.
+	Variant string `json:"variant,omitempty"`
+
+	// Features is an optional field specifying an array of strings, each
+	// listing a required CPU feature (for example `sse4` or `aes`).
+	Features []string `json:"features,omitempty"`
+}
+
+// ManifestDescriptor describes a platform specific manifest.
+type ManifestDescriptor struct {
+	specs.Descriptor
+
+	// Platform describes the platform which the image in the manifest runs on.
+	Platform Platform `json:"platform"`
+}
+
+// ManifestList  references manifests for various platforms.
+type ManifestList struct {
+	specs.Versioned
+
+	// Manifests references platform specific manifests.
+	Manifests []ManifestDescriptor `json:"manifests"`
+
+	// Annotations contains arbitrary metadata for the manifest list.
+	Annotations map[string]string `json:"annotations"`
+}

specs-go/v1/mediatype.go

@@ -0,0 +1,32 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 v1
+
+const (
+	// MediaTypeDescriptor specifies the mediaType for a content descriptor.
+	MediaTypeDescriptor = "application/vnd.oci.descriptor.v1+json"
+
+	// MediaTypeImageManifest specifies the mediaType for an image manifest.
+	MediaTypeImageManifest = "application/vnd.oci.image.manifest.v1+json"
+
+	// MediaTypeImageManifestList specifies the mediaType for an image manifest list.
+	MediaTypeImageManifestList = "application/vnd.oci.image.manifest.list.v1+json"
+
+	// MediaTypeImageSerialization is the mediaType used for layers referenced by the manifest.
+	MediaTypeImageSerialization = "application/vnd.oci.image.serialization.rootfs.tar.gzip"
+
+	// MediaTypeImageSerializationConfig specifies the mediaType for the image configuration.
+	MediaTypeImageSerializationConfig = "application/vnd.oci.image.serialization.config.v1+json"
+)

specs-go/version.go

@@ -1,3 +1,17 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 specs
 
 import "fmt"

specs-go/versioned.go

@@ -0,0 +1,26 @@
+// Copyright 2016 The Linux Foundation
+//
+// 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 specs
+
+// Versioned provides a struct with the manifest schemaVersion and . Incoming
+// content with unknown schema version can be decoded against this struct to
+// check the version.
+type Versioned struct {
+	// SchemaVersion is the image manifest schema that this image follows
+	SchemaVersion int `json:"schemaVersion"`
+
+	// MediaType is the media type of this schema.
+	MediaType string `json:"mediaType,omitempty"`
+}