veyron/services/mgmt/device/impl: add Debug RPC method for sundry state dumps
The way we currently debug the device manager is by poking around the directory
tree that the device manager sets up on the local filesystem. Sometimes, this is
not convenient (e.g. when we're remote), and other times the information we want
is not available on the filesystem (e.g. the credentials for app instances, when
using the security agent).
This CL adds the new Debug method to the Application interface in the VDL.
The corresponding implementation supports app installations and instances for
now, and prints an assortment of stuff about the respective installations and
instances.
Change-Id: I84dd88ff0324f103590651fdfca3252f17d37da7
diff --git a/tools/mgmt/device/impl/impl.go b/tools/mgmt/device/impl/impl.go
index 3a60782..6f469cd 100644
--- a/tools/mgmt/device/impl/impl.go
+++ b/tools/mgmt/device/impl/impl.go
@@ -94,7 +94,7 @@
Long: "Claim the device.",
ArgsName: "<device> <grant extension>",
ArgsLong: `
-<device> is the veyron object name of the device manager's app service.
+<device> is the veyron object name of the device manager's device service.
<grant extension> is used to extend the default blessing of the
current principal when blessing the app instance.`,
@@ -120,7 +120,7 @@
Long: "Describe the device.",
ArgsName: "<device>",
ArgsLong: `
-<device> is the veyron object name of the device manager's app service.`,
+<device> is the veyron object name of the device manager's device service.`,
}
func runDescribe(cmd *cmdline.Command, args []string) error {
@@ -135,3 +135,26 @@
}
return nil
}
+
+var cmdDebug = &cmdline.Command{
+ Run: runDebug,
+ Name: "debug",
+ Short: "Debug the device.",
+ Long: "Debug the device.",
+ ArgsName: "<device>",
+ ArgsLong: `
+<device> is the veyron object name of an app installation or instance.`,
+}
+
+func runDebug(cmd *cmdline.Command, args []string) error {
+ if expected, got := 1, len(args); expected != got {
+ return cmd.UsageErrorf("debug: incorrect number of arguments, expected %d, got %d", expected, got)
+ }
+ deviceName := args[0]
+ if description, err := device.DeviceClient(deviceName).Debug(gctx); err != nil {
+ return fmt.Errorf("Debug failed: %v", err)
+ } else {
+ fmt.Fprintf(cmd.Stdout(), "%v\n", description)
+ }
+ return nil
+}
