firehol/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

package lvm

import (
    "context"
    "fmt"
    "os/exec"
    "time"

    "github.com/netdata/netdata/go/plugins/logger"
)

func newLVMCLIExec(ndsudoPath string, timeout time.Duration, log *logger.Logger) *lvmCLIExec {
    return &lvmCLIExec{
        Logger:     log,
        ndsudoPath: ndsudoPath,
        timeout:    timeout,
    }
}

type lvmCLIExec struct {
    *logger.Logger

    ndsudoPath string
    timeout    time.Duration
}

func (e *lvmCLIExec) lvsReportJson() ([]byte, error) {
    ctx, cancel := context.WithTimeout(context.Background(), e.timeout)
    defer cancel()

    cmd := exec.CommandContext(ctx,
        e.ndsudoPath,
        "lvs-report-json",
        "--options",
        "vg_name,lv_name,lv_size,data_percent,metadata_percent,lv_attr",
    )
    e.Debugf("executing '%s'", cmd)

    bs, err := cmd.Output()
    if err != nil {
        return nil, fmt.Errorf("error on '%s': %v", cmd, err)
    }

    return bs, nil
}