70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
package logmon
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import (
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"context"
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"os/exec"
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hclog "github.com/hashicorp/go-hclog"
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plugin "github.com/hashicorp/go-plugin"
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"github.com/hashicorp/nomad/client/logmon/proto"
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"github.com/hashicorp/nomad/helper/discover"
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"github.com/hashicorp/nomad/plugins/base"
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"google.golang.org/grpc"
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)
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// LaunchLogMon an instance of logmon
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// TODO: Integrate with base plugin loader
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func LaunchLogMon(logger hclog.Logger) (LogMon, *plugin.Client, error) {
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logger = logger.Named("logmon-launcher")
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bin, err := discover.NomadExecutable()
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if err != nil {
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return nil, nil, err
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}
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client := plugin.NewClient(&plugin.ClientConfig{
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HandshakeConfig: base.Handshake,
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Plugins: map[string]plugin.Plugin{
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"logmon": NewPlugin(NewLogMon(hclog.L().Named("logmon"))),
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},
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Cmd: exec.Command(bin, "logmon"),
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AllowedProtocols: []plugin.Protocol{
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plugin.ProtocolGRPC,
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},
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})
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rpcClient, err := client.Client()
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if err != nil {
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return nil, nil, err
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}
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raw, err := rpcClient.Dispense("logmon")
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if err != nil {
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return nil, nil, err
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}
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l := raw.(LogMon)
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return l, client, nil
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}
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type Plugin struct {
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plugin.NetRPCUnsupportedPlugin
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impl LogMon
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}
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func NewPlugin(i LogMon) plugin.Plugin {
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return &Plugin{impl: i}
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}
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func (p *Plugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
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proto.RegisterLogMonServer(s, &logmonServer{
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impl: p.impl,
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broker: broker,
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})
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return nil
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}
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func (p *Plugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
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return &logmonClient{client: proto.NewLogMonClient(c)}, nil
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}
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