mirror of
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72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
package promscrape
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import (
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"net"
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"sync/atomic"
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"github.com/VictoriaMetrics/metrics"
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"github.com/valyala/fasthttp"
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)
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func statDial(addr string) (net.Conn, error) {
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conn, err := fasthttp.Dial(addr)
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dialsTotal.Inc()
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if err != nil {
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dialErrors.Inc()
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return nil, err
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}
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conns.Inc()
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sc := &statConn{
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Conn: conn,
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}
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return sc, nil
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}
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var (
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dialsTotal = metrics.NewCounter(`vm_promscrape_dials_total`)
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dialErrors = metrics.NewCounter(`vm_promscrape_dial_errors_total`)
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conns = metrics.NewCounter(`vm_promscrape_conns`)
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)
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type statConn struct {
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closed uint64
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net.Conn
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}
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func (sc *statConn) Read(p []byte) (int, error) {
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n, err := sc.Conn.Read(p)
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connReadsTotal.Inc()
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if err != nil {
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connReadErrors.Inc()
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}
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connBytesRead.Add(n)
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return n, err
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}
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func (sc *statConn) Write(p []byte) (int, error) {
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n, err := sc.Conn.Write(p)
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connWritesTotal.Inc()
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if err != nil {
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connWriteErrors.Inc()
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}
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connBytesWritten.Add(n)
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return n, err
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}
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func (sc *statConn) Close() error {
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err := sc.Conn.Close()
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if atomic.AddUint64(&sc.closed, 1) == 1 {
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conns.Dec()
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}
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return err
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}
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var (
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connReadsTotal = metrics.NewCounter(`vm_promscrape_conn_reads_total`)
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connWritesTotal = metrics.NewCounter(`vm_promscrape_conn_writes_total`)
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connReadErrors = metrics.NewCounter(`vm_promscrape_conn_read_errors_total`)
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connWriteErrors = metrics.NewCounter(`vm_promscrape_conn_write_errors_total`)
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connBytesRead = metrics.NewCounter(`vm_promscrape_conn_bytes_read_total`)
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connBytesWritten = metrics.NewCounter(`vm_promscrape_conn_bytes_written_total`)
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)
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