55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
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package executor
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import (
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"fmt"
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"io"
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syslog "github.com/RackSec/srslog"
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"github.com/hashicorp/nomad/client/driver/logging"
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)
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func (e *UniversalExecutor) LaunchSyslogServer() (*SyslogServerState, error) {
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// Ensure the context has been set first
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if e.ctx == nil {
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return nil, fmt.Errorf("SetContext must be called before launching the Syslog Server")
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}
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// configuring the task dir
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if err := e.configureTaskDir(); err != nil {
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return nil, err
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}
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e.syslogChan = make(chan *logging.SyslogMessage, 2048)
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l, err := e.getListener(e.ctx.PortLowerBound, e.ctx.PortUpperBound)
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if err != nil {
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return nil, err
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}
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e.logger.Printf("[DEBUG] sylog-server: launching syslog server on addr: %v", l.Addr().String())
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if err := e.configureLoggers(); err != nil {
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return nil, err
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}
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e.syslogServer = logging.NewSyslogServer(l, e.syslogChan, e.logger)
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go e.syslogServer.Start()
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go e.collectLogs(e.lre, e.lro)
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syslogAddr := fmt.Sprintf("%s://%s", l.Addr().Network(), l.Addr().String())
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return &SyslogServerState{Addr: syslogAddr}, nil
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}
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func (e *UniversalExecutor) collectLogs(we io.Writer, wo io.Writer) {
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for logParts := range e.syslogChan {
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// If the severity of the log line is err then we write to stderr
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// otherwise all messages go to stdout
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if logParts.Severity == syslog.LOG_ERR {
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e.lre.Write(logParts.Message)
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e.lre.Write([]byte{'\n'})
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} else {
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e.lro.Write(logParts.Message)
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e.lro.Write([]byte{'\n'})
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}
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}
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}
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