64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
package run
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import (
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"io"
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"os"
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"os/exec"
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"syscall"
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)
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const helmBin = "/usr/bin/helm"
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// The cmd interface provides a generic form of exec.Cmd so that it can be mocked out in tests.
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type cmd interface {
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// methods that exist on exec.Cmd
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Output() ([]byte, error)
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Run() error
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CombinedOutput() ([]byte, error)
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Start() error
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StderrPipe() (io.ReadCloser, error)
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StdinPipe() (io.WriteCloser, error)
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StdoutPipe() (io.ReadCloser, error)
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String() string
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Wait() error
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// setters for struct fields set by callers of exec.Cmd
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Path(string)
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Args([]string)
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Env([]string)
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Dir(string)
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Stdin(io.Reader)
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Stdout(io.Writer)
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Stderr(io.Writer)
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ExtraFiles([]*os.File)
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SysProcAttr(*syscall.SysProcAttr)
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// getters for struct fields generated by exec.Cmd
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Process() *os.Process
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ProcessState() *os.ProcessState
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}
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// execCmd wraps exec.Cmd along with setters for exec.Cmd's struct fields, implementing the cmd interface.
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type execCmd struct {
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*exec.Cmd
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}
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var command = func(path string, args ...string) cmd {
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return &execCmd{
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Cmd: exec.Command(path, args...),
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}
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}
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func (c *execCmd) Path(p string) { c.Cmd.Path = p }
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func (c *execCmd) Args(a []string) { c.Cmd.Args = a }
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func (c *execCmd) Env(e []string) { c.Cmd.Env = e }
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func (c *execCmd) Dir(d string) { c.Cmd.Dir = d }
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func (c *execCmd) Stdin(s io.Reader) { c.Cmd.Stdin = s }
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func (c *execCmd) Stdout(s io.Writer) { c.Cmd.Stdout = s }
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func (c *execCmd) Stderr(s io.Writer) { c.Cmd.Stderr = s }
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func (c *execCmd) ExtraFiles(f []*os.File) { c.Cmd.ExtraFiles = f }
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func (c *execCmd) SysProcAttr(s *syscall.SysProcAttr) { c.Cmd.SysProcAttr = s }
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func (c *execCmd) Process() *os.Process { return c.Cmd.Process }
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func (c *execCmd) ProcessState() *os.ProcessState { return c.Cmd.ProcessState }
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