mirror of
https://github.com/mulgadc/spinifex.git
synced 2026-10-23 04:36:40 +00:00
Ben Duncan
81 lines
2.5 KiB
Go
81 lines
2.5 KiB
Go
package nbd
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import (
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"fmt"
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"os"
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"os/exec"
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"strconv"
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)
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type NBDKitConfig struct {
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Port int `json:"port"` // TCP port (when using TCP transport)
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Socket string `json:"socket"` // Unix socket path (when using socket transport)
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PidFile string `json:"pid_file"`
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PluginPath string `json:"plugin_path"`
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Verbose bool `json:"verbose"`
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Foreground bool `json:"foreground"`
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Size int64 `json:"size"`
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Volume string `json:"volume"`
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Bucket string `json:"bucket"`
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Region string `json:"region"`
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AccessKey string `json:"access_key"`
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SecretKey string `json:"secret_key"`
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BaseDir string `json:"base_dir"`
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Host string `json:"host"`
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CacheSize int `json:"cache_size"`
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UseTCP bool `json:"use_tcp"` // If true, use TCP transport; otherwise use Unix socket
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}
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func (cfg *NBDKitConfig) Execute() (*exec.Cmd, error) {
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// TODO: Consider setting threads to X% of the host availability (preference for VMs)
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/*
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--threads=THREADS
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Set the number of threads to be used per connection, which in turn controls the number of outstanding requests that can
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be processed at once. Only matters for plugins with thread_model=parallel (where it defaults to 16). To force
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serialized behavior (useful if the client is not prepared for out-of-order responses), set this to 1.
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*/
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args := []string{
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"-f", // foreground required for Golang plugin via nbdkit
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"--pidfile", cfg.PidFile,
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}
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// Add transport-specific arguments
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if cfg.UseTCP {
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// TCP transport - for remote/DPU scenarios
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args = append(args, "-p", strconv.Itoa(cfg.Port))
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} else {
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// Unix socket transport (default) - faster for local connections
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if cfg.Socket == "" {
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return nil, fmt.Errorf("socket path is required when not using TCP transport")
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}
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args = append(args, "--unix", cfg.Socket)
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}
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args = append(args, cfg.PluginPath)
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if cfg.Verbose {
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args = append(args, "-v")
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}
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// Add plugin-specific arguments
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pluginArgs := []string{
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fmt.Sprintf("size=%d", cfg.Size),
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fmt.Sprintf("volume=%s", cfg.Volume),
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fmt.Sprintf("bucket=%s", cfg.Bucket),
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fmt.Sprintf("region=%s", cfg.Region),
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fmt.Sprintf("access_key=%s", cfg.AccessKey),
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fmt.Sprintf("secret_key=%s", cfg.SecretKey),
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fmt.Sprintf("base_dir=%s", cfg.BaseDir),
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fmt.Sprintf("host=%s", cfg.Host),
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fmt.Sprintf("cache_size=%d", cfg.CacheSize),
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}
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args = append(args, pluginArgs...)
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cmd := exec.Command("nbdkit", args...)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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return cmd, cmd.Start()
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}
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