Sébastien Han
ad95c7296f
When using the "errors" package, using `%+v` (extended format), each Frame of the error's StackTrace will be printed in detail. Let's only print `%v` to print the error. If the error has a Cause it will be printed recursively. Basically `%+v` has been replaced with `%v` for all `error` type interfaces, whether the logger is Info, Warning or Error. Signed-off-by: Sébastien Han <seb@redhat.com>
90 lines
2.7 KiB
Go
90 lines
2.7 KiB
Go
/*
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Copyright 2017 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"io/ioutil"
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"net"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/coreos/pkg/capnslog"
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"github.com/pkg/errors"
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)
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const (
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RBDSysBusPathDefault = "/sys/bus/rbd"
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RBDDevicesDir = "devices"
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RBDDevicePathPrefix = "/dev/rbd"
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)
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var logger = capnslog.NewPackageLogger("github.com/rook/rook", "op-ceph-util")
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// FindRBDMappedFile search for the mapped RBD volume and returns its device path
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func FindRBDMappedFile(imageName, poolName, sysBusDir string) (string, error) {
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sysBusDeviceDir := filepath.Join(sysBusDir, RBDDevicesDir)
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// if sysPath does not exist, no attachments has happened
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if _, err := os.Stat(sysBusDeviceDir); os.IsNotExist(err) {
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return "", nil
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}
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files, err := ioutil.ReadDir(sysBusDeviceDir)
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if err != nil {
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return "", errors.Wrapf(err, "failed to read rbd device dir")
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}
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for _, idFile := range files {
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nameContent, err := ioutil.ReadFile(filepath.Join(sysBusDeviceDir, idFile.Name(), "name"))
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if err == nil && imageName == strings.TrimSpace(string(nameContent)) {
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// the image for the current rbd device matches, now try to match pool
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poolContent, err := ioutil.ReadFile(filepath.Join(sysBusDeviceDir, idFile.Name(), "pool"))
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if err == nil && poolName == strings.TrimSpace(string(poolContent)) {
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// match current device matches both image name and pool name, return the device
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return idFile.Name(), nil
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}
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}
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}
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return "", nil
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}
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// GetIPFromEndpoint return the IP from an endpoint string (192.168.0.1:6789)
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func GetIPFromEndpoint(endpoint string) string {
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host, _, err := net.SplitHostPort(endpoint)
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if err != nil {
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logger.Errorf("failed to split ip and port for endpoint %q. %v", endpoint, err)
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}
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return host
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}
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// GetPortFromEndpoint return the port from an endpoint string (192.168.0.1:6789)
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func GetPortFromEndpoint(endpoint string) int32 {
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var port int
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_, portString, err := net.SplitHostPort(endpoint)
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if err != nil {
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logger.Errorf("failed to split host and port for endpoint %q, assuming default Ceph port %q. %v", endpoint, portString, err)
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} else {
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port, err = strconv.Atoi(portString)
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if err != nil {
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logger.Errorf("failed to convert %q to integer. %v", portString, err)
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}
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}
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return int32(port)
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}
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