2018-08-17 22:19:44 +00:00
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This command allows plugin developers to interact with a plugin directly. The
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2018-08-28 22:00:48 +00:00
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command has subcommands for each plugin type. See the subcommand help text for
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detailed usage information.
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# Device Example
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The `device` subcommand provides a way to interact and visualize the data being
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returned by a device plugin. As an example we will run the example device
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plugin. To use this command with your own device plugin substitute the example
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plugin with your own.
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```
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# Current working directory should be the root folder: github.com/hashicorp/nomad
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# Build the plugin launcher
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$ go build github.com/hashicorp/nomad/plugins/shared/cmd/launcher/
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# Build the example fs-device plugin
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$ go build -o fs-device github.com/hashicorp/nomad/plugins/device/cmd/example/cmd
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# Launch the plugin
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$ ./launcher device ./fs-device
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> Availabile commands are: exit(), fingerprint(), stop_fingerprint(), stats(), stop_stats(), reserve(id1, id2, ...)
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> 2018-08-28T14:54:45.658-0700 [INFO ] nomad-plugin-launcher.fs-device: config set: @module=example-fs-device config="example.Config{Dir:".", ListPeriod:"5s", StatsPeriod:"5s", UnhealthyPerm:"-rwxrwxrwx"}" timestamp=2018-08-28T14:54:45.658-0700
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^C
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2018-08-28T14:54:54.727-0700 [ERROR] nomad-plugin-launcher: error interacting with plugin: error=interrupted
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# Lets launch changing the configuration
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$ cat <<\EOF >fs-device.config
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> config {
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> dir = "./plugins"
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> stats_period = "2s"
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> }
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> EOF
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$ ./launcher device ./fs-device ./fs-device.config
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2018-08-28T14:59:45.886-0700 [INFO ] nomad-plugin-launcher.fs-device: config set: @module=example-fs-device config="example.Config{Dir:"./plugins", ListPeriod:"5s", StatsPeriod:"2s", UnhealthyPerm:"-rwxrwxrwx"}" timestamp=2018-08-28T14:59:45.886-0700
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> Availabile commands are: exit(), fingerprint(), stop_fingerprint(), stats(), stop_stats(), reserve(id1, id2, ...)
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> fingerprint()
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> > fingerprint: &device.FingerprintResponse{
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Devices: {
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&device.DeviceGroup{
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Vendor: "nomad",
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Type: "file",
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Name: "mock",
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Devices: {
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&device.Device{
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ID: "serve.go",
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Healthy: true,
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HealthDesc: "",
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HwLocality: (*device.DeviceLocality)(nil),
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},
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},
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Attributes: {},
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},
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},
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Error: nil,
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}
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^C
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2018-08-28T15:00:00.329-0700 [ERROR] nomad-plugin-launcher: error interacting with plugin: error=interrupted
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```
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