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authorWim <wim@42.be>2021-10-17 00:47:22 +0200
committerGitHub <noreply@github.com>2021-10-17 00:47:22 +0200
commit4dd8bae5c91fa4aef09d865d8fef1acd84f90925 (patch)
treeffad9b242daccaf8c86d1c1fbd59032302bd3be9 /vendor/github.com/gopackage/ddp/stats.go
parent7ae45c42e712bd0e66c101f3f714c05aa1dc2104 (diff)
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Update dependencies (#1610)
* Update dependencies * Update module to go 1.17
Diffstat (limited to 'vendor/github.com/gopackage/ddp/stats.go')
-rw-r--r--vendor/github.com/gopackage/ddp/stats.go170
1 files changed, 170 insertions, 0 deletions
diff --git a/vendor/github.com/gopackage/ddp/stats.go b/vendor/github.com/gopackage/ddp/stats.go
new file mode 100644
index 00000000..b2548098
--- /dev/null
+++ b/vendor/github.com/gopackage/ddp/stats.go
@@ -0,0 +1,170 @@
+package ddp
+
+import (
+ "fmt"
+ "io"
+ "sync"
+ "time"
+)
+
+// Gather statistics about a DDP connection.
+
+// Stats tracks statistics for i/o operations.
+type Stats struct {
+ // Bytes is the total number of bytes transferred.
+ Bytes int64
+ // Ops is the total number of i/o operations performed.
+ Ops int64
+ // Errors is the total number of i/o errors encountered.
+ Errors int64
+ // Runtime is the duration that stats have been gathered.
+ Runtime time.Duration
+}
+
+// ClientStats displays combined statistics for the Client.
+type ClientStats struct {
+ // Reads provides statistics on the raw i/o network reads for the current connection.
+ Reads *Stats
+ // Reads provides statistics on the raw i/o network reads for the all client connections.
+ TotalReads *Stats
+ // Writes provides statistics on the raw i/o network writes for the current connection.
+ Writes *Stats
+ // Writes provides statistics on the raw i/o network writes for all the client connections.
+ TotalWrites *Stats
+ // Reconnects is the number of reconnections the client has made.
+ Reconnects int64
+ // PingsSent is the number of pings sent by the client
+ PingsSent int64
+ // PingsRecv is the number of pings received by the client
+ PingsRecv int64
+}
+
+// String produces a compact string representation of the client stats.
+func (stats *ClientStats) String() string {
+ i := stats.Reads
+ ti := stats.TotalReads
+ o := stats.Writes
+ to := stats.TotalWrites
+ totalRun := (ti.Runtime * 1000000) / 1000000
+ run := (i.Runtime * 1000000) / 1000000
+ return fmt.Sprintf("bytes: %d/%d##%d/%d ops: %d/%d##%d/%d err: %d/%d##%d/%d reconnects: %d pings: %d/%d uptime: %v##%v",
+ i.Bytes, o.Bytes,
+ ti.Bytes, to.Bytes,
+ i.Ops, o.Ops,
+ ti.Ops, to.Ops,
+ i.Errors, o.Errors,
+ ti.Errors, to.Errors,
+ stats.Reconnects,
+ stats.PingsRecv, stats.PingsSent,
+ run, totalRun)
+}
+
+// CollectionStats combines statistics about a collection.
+type CollectionStats struct {
+ Name string // Name of the collection
+ Count int // Count is the total number of documents in the collection
+}
+
+// String produces a compact string representation of the collection stat.
+func (s *CollectionStats) String() string {
+ return fmt.Sprintf("%s[%d]", s.Name, s.Count)
+}
+
+// StatsTracker provides the basic tooling for tracking i/o stats.
+type StatsTracker struct {
+ bytes int64
+ ops int64
+ errors int64
+ start time.Time
+ lock sync.Mutex
+}
+
+// NewStatsTracker create a new tracker with start time set to now.
+func NewStatsTracker() *StatsTracker {
+ return &StatsTracker{start: time.Now()}
+}
+
+// Op records an i/o operation. The parameters are passed through to
+// allow easy chaining.
+func (t *StatsTracker) Op(n int, err error) (int, error) {
+ t.lock.Lock()
+ defer t.lock.Unlock()
+ t.ops++
+ if err == nil {
+ t.bytes += int64(n)
+ } else {
+ if err == io.EOF {
+ // I don't think we should log EOF stats as an error
+ } else {
+ t.errors++
+ }
+ }
+
+ return n, err
+}
+
+// Snapshot takes a snapshot of the current Reader statistics.
+func (t *StatsTracker) Snapshot() *Stats {
+ t.lock.Lock()
+ defer t.lock.Unlock()
+ return t.snap()
+}
+
+// Reset all stats to initial values.
+func (t *StatsTracker) Reset() *Stats {
+ t.lock.Lock()
+ defer t.lock.Unlock()
+
+ stats := t.snap()
+ t.bytes = 0
+ t.ops = 0
+ t.errors = 0
+ t.start = time.Now()
+
+ return stats
+}
+
+func (t *StatsTracker) snap() *Stats {
+ return &Stats{Bytes: t.bytes, Ops: t.ops, Errors: t.errors, Runtime: time.Since(t.start)}
+}
+
+// ReaderStats tracks statistics on any io.Reader.
+// ReaderStats wraps a Reader and passes data to the actual data consumer.
+type ReaderStats struct {
+ StatsTracker
+ Reader io.Reader
+}
+
+// NewReaderStats creates a ReaderStats object for the provided Reader.
+func NewReaderStats(reader io.Reader) *ReaderStats {
+ r := &ReaderStats{Reader: reader}
+ r.Reset()
+ return r
+}
+
+// Read passes through a read collecting statistics and logging activity.
+func (r *ReaderStats) Read(p []byte) (int, error) {
+ return r.Op(r.Reader.Read(p))
+}
+
+// WriterStats tracks statistics on any io.Writer.
+// WriterStats wraps a Writer and passes data to the actual data producer.
+type WriterStats struct {
+ StatsTracker
+ Writer io.Writer
+}
+
+// NewWriterStats creates a WriterStats object for the provided Writer.
+func NewWriterStats(writer io.Writer) *WriterStats {
+ w := &WriterStats{Writer: writer}
+ w.Reset()
+ return w
+}
+
+// Write collects Writer statistics.
+func (w *WriterStats) Write(p []byte) (int, error) {
+ if w.Writer != nil {
+ return w.Op(w.Writer.Write(p))
+ }
+ return 0, nil
+}