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leases: support resource management
Add three methods for lease service so that the client can use it to manage the resource by lease, not just gc.root label. With the following methods, it is easy for client to maintain their own cache system. ``` - AddResource(context.Context, Lease, Resource) error - RemoveResource(context.Context, Lease, Resource) error - ListResources(context.Context, Lease) ([]Resource, error) ``` And the resource is to be ```golang type Resource { ID string Type string } ``` For the snapshots, the Type field will be formatted by snapshots/%{type}, like snapshots/overlayfs. fix: #3295 Signed-off-by: Wei Fu <[email protected]>
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‎api/next.pb.txt‎

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@@ -2627,6 +2627,89 @@ file {
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json_name: "leases"
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}
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}
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message_type {
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name: "Resource"
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field {
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name: "id"
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number: 1
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label: LABEL_OPTIONAL
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type: TYPE_STRING
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json_name: "id"
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}
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field {
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name: "type"
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number: 2
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label: LABEL_OPTIONAL
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type: TYPE_STRING
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json_name: "type"
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}
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}
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message_type {
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name: "AddResourceRequest"
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field {
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name: "id"
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number: 1
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label: LABEL_OPTIONAL
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type: TYPE_STRING
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json_name: "id"
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}
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field {
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name: "resource"
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number: 2
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label: LABEL_OPTIONAL
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type: TYPE_MESSAGE
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type_name: ".containerd.services.leases.v1.Resource"
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options {
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65001: 0
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}
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json_name: "resource"
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}
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}
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message_type {
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name: "DeleteResourceRequest"
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field {
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name: "id"
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number: 1
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label: LABEL_OPTIONAL
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type: TYPE_STRING
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json_name: "id"
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}
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field {
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name: "resource"
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number: 2
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label: LABEL_OPTIONAL
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type: TYPE_MESSAGE
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type_name: ".containerd.services.leases.v1.Resource"
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options {
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65001: 0
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}
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json_name: "resource"
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}
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}
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message_type {
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name: "ListResourcesRequest"
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field {
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name: "id"
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number: 1
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label: LABEL_OPTIONAL
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type: TYPE_STRING
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json_name: "id"
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}
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}
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message_type {
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name: "ListResourcesResponse"
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field {
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name: "resources"
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number: 1
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label: LABEL_REPEATED
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type: TYPE_MESSAGE
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type_name: ".containerd.services.leases.v1.Resource"
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options {
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65001: 0
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}
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json_name: "resources"
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}
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}
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service {
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name: "Leases"
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method {
@@ -2644,6 +2727,21 @@ file {
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input_type: ".containerd.services.leases.v1.ListRequest"
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output_type: ".containerd.services.leases.v1.ListResponse"
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}
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method {
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name: "AddResource"
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input_type: ".containerd.services.leases.v1.AddResourceRequest"
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output_type: ".google.protobuf.Empty"
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}
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method {
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name: "DeleteResource"
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input_type: ".containerd.services.leases.v1.DeleteResourceRequest"
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output_type: ".google.protobuf.Empty"
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}
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method {
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name: "ListResources"
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input_type: ".containerd.services.leases.v1.ListResourcesRequest"
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output_type: ".containerd.services.leases.v1.ListResourcesResponse"
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}
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}
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options {
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go_package: "github.com/containerd/containerd/api/services/leases/v1;leases"

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