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https://github.com/ceph/ceph-csi.git
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58bf45a13e
The go-ceph version 0.4.0 is available now which got some important library changes required for ceph csi project. Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
// +build !luminous,!mimic
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//
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// Ceph Nautilus is the first release that includes rbd_pool_metadata_get(),
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// rbd_pool_metadata_set() and rbd_pool_metadata_remove().
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package rbd
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// #cgo LDFLAGS: -lrbd
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// #include <rados/librados.h>
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// #include <rbd/librbd.h>
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// #include <stdlib.h>
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import "C"
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import (
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"unsafe"
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"github.com/ceph/go-ceph/internal/retry"
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"github.com/ceph/go-ceph/rados"
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)
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// GetPoolMetadata returns pool metadata associated with the given key.
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//
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// Implements:
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// int rbd_pool_metadata_get(rados_ioctx_t io_ctx, const char *key, char *value, size_t *val_len);
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func GetPoolMetadata(ioctx *rados.IOContext, key string) (string, error) {
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if ioctx == nil {
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return "", ErrNoIOContext
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}
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cKey := C.CString(key)
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defer C.free(unsafe.Pointer(cKey))
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var (
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buf []byte
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err error
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)
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retry.WithSizes(4096, 262144, func(size int) retry.Hint {
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cSize := C.size_t(size)
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buf = make([]byte, cSize)
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ret := C.rbd_pool_metadata_get(cephIoctx(ioctx),
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cKey,
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(*C.char)(unsafe.Pointer(&buf[0])),
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&cSize)
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err = getError(ret)
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return retry.Size(int(cSize)).If(err == errRange)
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})
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if err != nil {
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return "", err
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}
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return C.GoString((*C.char)(unsafe.Pointer(&buf[0]))), nil
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}
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// SetPoolMetadata updates the pool metadata string associated with the given key.
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//
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// Implements:
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// int rbd_pool_metadata_set(rados_ioctx_t io_ctx, const char *key, const char *value);
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func SetPoolMetadata(ioctx *rados.IOContext, key, value string) error {
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if ioctx == nil {
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return ErrNoIOContext
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}
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cKey := C.CString(key)
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defer C.free(unsafe.Pointer(cKey))
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cValue := C.CString(value)
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defer C.free(unsafe.Pointer(cValue))
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ret := C.rbd_pool_metadata_set(cephIoctx(ioctx), cKey, cValue)
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return getError(ret)
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}
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// RemovePoolMetadata removes the pool metadata value for a given pool metadata key.
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//
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// Implements:
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// int rbd_pool_metadata_remove(rados_ioctx_t io_ctx, const char *key)
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func RemovePoolMetadata(ioctx *rados.IOContext, key string) error {
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if ioctx == nil {
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return ErrNoIOContext
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}
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cKey := C.CString(key)
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defer C.free(unsafe.Pointer(cKey))
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ret := C.rbd_pool_metadata_remove(cephIoctx(ioctx), cKey)
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return getError(ret)
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}
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