d2dbb8c963
* cli: initial work on debug; server-status target * debug: add metrics capture target (#7376) * check against DR secondary * debug: add compression * refactor check into preflight func * debug: set short test time on tests, fix exit code bug * debug: use temp dir for output on tests * debug: use mholt/archiver for compression * first pass on adding pprof * use logger for output * refactor polling target capture logic * debug: poll and collect replication status * debug: poll and collect host-info; rename output files and collection refactor * fix comments * add archive test; fix bugs found * rename flag name to singular target * add target output test; scaffold other tests cases * debug/test: add pprof and index file tests * debug/test: add min timing check tests * debug: fix index gen race and collection goroutine race * debug: extend archive tests, handle race between program exit and polling goroutines * update docstring * debug: correctly add to pollingWg * debug: add config target support * debug: don't wait on interrupt shutdown; add file exists unit tests * move pprof bits into its goroutine * debug: skip empty metrics and some pprof file creation if permission denied, add matching unit test * address comments and feedback * Vault debug using run.Group (#7658) * debug: switch to use oklog/run.Group * debug: use context to cancel requests and interrupt rungroups. * debug: trigger the first interval properly * debug: metrics collection should use metrics interval * debug: add missing continue on metrics error * debug: remove the use of buffered chan to trigger first interval * debug: don't shadow BaseCommand's client, properly block on interval capture failures * debug: actually use c.cachedClient everywhere * go mod vendor * debug: run all pprof in goroutines; bump pprof timings in tests to reduce flakiness * debug: update help text
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package archiver
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import (
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"fmt"
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"io"
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"path/filepath"
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"github.com/pierrec/lz4"
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)
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// Lz4 facilitates LZ4 compression.
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type Lz4 struct {
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CompressionLevel int
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}
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// Compress reads in, compresses it, and writes it to out.
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func (lz *Lz4) Compress(in io.Reader, out io.Writer) error {
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w := lz4.NewWriter(out)
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w.Header.CompressionLevel = lz.CompressionLevel
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defer w.Close()
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_, err := io.Copy(w, in)
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return err
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}
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// Decompress reads in, decompresses it, and writes it to out.
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func (lz *Lz4) Decompress(in io.Reader, out io.Writer) error {
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r := lz4.NewReader(in)
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_, err := io.Copy(out, r)
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return err
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}
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// CheckExt ensures the file extension matches the format.
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func (lz *Lz4) CheckExt(filename string) error {
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if filepath.Ext(filename) != ".lz4" {
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return fmt.Errorf("filename must have a .lz4 extension")
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}
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return nil
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}
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func (lz *Lz4) String() string { return "lz4" }
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// NewLz4 returns a new, default instance ready to be customized and used.
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func NewLz4() *Lz4 {
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return &Lz4{
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CompressionLevel: 9, // https://github.com/lz4/lz4/blob/1b819bfd633ae285df2dfe1b0589e1ec064f2873/lib/lz4hc.h#L48
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}
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}
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// Compile-time checks to ensure type implements desired interfaces.
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var (
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_ = Compressor(new(Lz4))
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_ = Decompressor(new(Lz4))
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)
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// DefaultLz4 is a default instance that is conveniently ready to use.
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var DefaultLz4 = NewLz4()
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