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68 lines
2.7 KiB
Go
68 lines
2.7 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package dsync
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import "context"
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// NetLocker is dsync compatible locker interface.
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type NetLocker interface {
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// Do read lock for given LockArgs. It should return
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// * a boolean to indicate success/failure of the operation
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// * an error on failure of lock request operation.
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RLock(ctx context.Context, args LockArgs) (bool, error)
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// Do write lock for given LockArgs. It should return
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// * a boolean to indicate success/failure of the operation
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// * an error on failure of lock request operation.
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Lock(ctx context.Context, args LockArgs) (bool, error)
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// Do read unlock for given LockArgs. It should return
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// * a boolean to indicate success/failure of the operation
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// * an error on failure of unlock request operation.
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// Canceling the context will abort the remote call.
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// In that case, the resource may or may not be unlocked.
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RUnlock(ctx context.Context, args LockArgs) (bool, error)
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// Do write unlock for given LockArgs. It should return
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// * a boolean to indicate success/failure of the operation
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// * an error on failure of unlock request operation.
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// Canceling the context will abort the remote call.
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// In that case, the resource may or may not be unlocked.
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Unlock(ctx context.Context, args LockArgs) (bool, error)
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// Refresh the given lock to prevent it from becoming stale
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Refresh(ctx context.Context, args LockArgs) (bool, error)
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// Unlock (read/write) forcefully for given LockArgs. It should return
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// * a boolean to indicate success/failure of the operation
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// * an error on failure of unlock request operation.
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ForceUnlock(ctx context.Context, args LockArgs) (bool, error)
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// Returns underlying endpoint of this lock client instance.
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String() string
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// Close closes any underlying connection to the service endpoint
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Close() error
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// Is the underlying connection online? (is always true for any local lockers)
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IsOnline() bool
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// Is the underlying locker local to this server?
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IsLocal() bool
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}
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