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/*
* Copyright (c) CERN 2016
*
* 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 gfal2
// #cgo pkg-config: gfal2 gfal_transfer
// #include <gfal_api.h>
//
// int helper_strvlengh(gchar **array) {
// int i = 0;
// for (i = 0; array[i] != NULL; ++i);
// return i;
// }
//
import "C"
import (
"unsafe"
)
// Context is a handle to a gfal2 instantiation.
type Context struct {
cContext C.gfal2_context_t
}
// Version returns the underlying gfal2 version.
func Version() string {
return C.GoString(C.gfal2_version())
}
// NewContext creates a new gfal2 context.
func NewContext() (*Context, GError) {
var context Context
var err *C.GError
context.cContext = C.gfal2_context_new(&err)
if context.cContext == nil {
return nil, errorCtoGo(err)
}
return &context, nil
}
// Close destroys the gfal2 context.
func (context Context) Close() {
C.gfal2_context_free(context.cContext)
context.cContext = nil
}
// GetPluginNames returns a list with the names and version of the loaded plugins.
func (context Context) GetPluginNames() ([]string, GError) {
cArray := C.gfal2_get_plugin_names(context.cContext)
cLength := C.helper_strvlengh(cArray)
slice := (*[1 << 30]*C.char)(unsafe.Pointer(cArray))[:cLength:cLength]
array := make([]string, cLength)
for index, name := range slice {
array[index] = C.GoString(name)
}
C.g_strfreev(cArray)
return array, nil
}
// Cancel running operations, if any.
// Return the number of cancelled operations.
func (context Context) Cancel() int {
return int(C.gfal2_cancel(context.cContext))
}
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