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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| // Copyright 2020 Anapaya Systems | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "time" | ||
|
|
||
| "github.com/scionproto/scion/pkg/addr" | ||
| "github.com/scionproto/scion/pkg/log" | ||
| "github.com/scionproto/scion/pkg/private/serrors" | ||
| "github.com/scionproto/scion/private/app" | ||
| "github.com/scionproto/scion/private/app/flag" | ||
| "github.com/scionproto/scion/private/tracing" | ||
| "github.com/scionproto/scion/scion/fabrid" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| func newFabrid(pather CommandPather) *cobra.Command { | ||
| var envFlags flag.SCIONEnvironment | ||
| var flags struct { | ||
| timeout time.Duration | ||
| cfg fabrid.Config | ||
| extended bool | ||
| json bool | ||
| logLevel string | ||
| noColor bool | ||
| tracer string | ||
| format string | ||
| } | ||
|
|
||
| var cmd = &cobra.Command{ | ||
| Use: "fabrid", | ||
| Short: "Display FABRID policy information", | ||
| Args: cobra.ExactArgs(1), | ||
| Example: fmt.Sprintf(` %[1]s showpaths 1-ff00:0:110 --extended | ||
| %[1]s showpaths 1-ff00:0:110 --local 127.0.0.55 --json | ||
| %[1]s showpaths 1-ff00:0:111 --sequence="0-0#2 0*" # outgoing IfID=2 | ||
| %[1]s showpaths 1-ff00:0:111 --sequence="0* 0-0#41" # incoming IfID=41 at dstIA | ||
| %[1]s showpaths 1-ff00:0:111 --sequence="0* 1-ff00:0:112 0*" # 1-ff00:0:112 on the path | ||
| %[1]s showpaths 1-ff00:0:110 --no-probe`, pather.CommandPath()), | ||
| Long: `'fabrid' lists available policies at a remote AS, or shows the | ||
| description of a specific policy.`, | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| dst, err := addr.ParseIA(args[0]) | ||
| if err != nil { | ||
| return serrors.WrapStr("invalid destination ISD-AS", err) | ||
| } | ||
| if err := app.SetupLog(flags.logLevel); err != nil { | ||
| return serrors.WrapStr("setting up logging", err) | ||
| } | ||
| closer, err := setupTracer("fabrid", flags.tracer) | ||
| if err != nil { | ||
| return serrors.WrapStr("setting up tracing", err) | ||
| } | ||
| defer closer() | ||
|
|
||
| if flags.json && !cmd.Flags().Lookup("format").Changed { | ||
| flags.format = "json" | ||
| } | ||
| printf, err := getPrintf(flags.format, cmd.OutOrStdout()) | ||
| if err != nil { | ||
| return serrors.WrapStr("get formatting", err) | ||
| } | ||
|
|
||
| cmd.SilenceUsage = true | ||
|
|
||
| if err := envFlags.LoadExternalVars(); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| flags.cfg.Daemon = envFlags.Daemon() | ||
| flags.cfg.Local = net.IP(envFlags.Local().AsSlice()) | ||
| log.Debug("Resolved SCION environment flags", | ||
| "daemon", flags.cfg.Daemon, | ||
| "local", flags.cfg.Local, | ||
| ) | ||
|
|
||
| span, traceCtx := tracing.CtxWith(context.Background(), "run") | ||
| span.SetTag("dst.isd_as", dst) | ||
| defer span.Finish() | ||
|
|
||
| ctx, cancel := context.WithTimeout(traceCtx, flags.timeout) | ||
| defer cancel() | ||
| res, err := fabrid.Run(ctx, dst, flags.cfg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| switch flags.format { | ||
| case "human": | ||
| if res.IsLocal() { | ||
| printf("Empty path, destination is local AS %s\n", res.Destination) | ||
| return nil | ||
| } | ||
| printf("Available policies at %s\n", res.Destination) | ||
| if len(res.Paths) == 0 { | ||
| return app.WithExitCode(serrors.New("no policies found"), 1) | ||
| } | ||
| res.Human(cmd.OutOrStdout(), flags.extended, !flags.noColor) | ||
| case "json": | ||
| return serrors.New("Not implemented", "format", flags.format) | ||
| case "yaml": | ||
| return serrors.New("Not implemented", "format", flags.format) | ||
| default: | ||
| return serrors.New("output format not supported", "format", flags.format) | ||
| } | ||
| return nil | ||
| }, | ||
| } | ||
|
|
||
| envFlags.Register(cmd.Flags()) | ||
| cmd.Flags().DurationVar(&flags.timeout, "timeout", 5*time.Second, "Timeout") | ||
| cmd.Flags().StringVar(&flags.cfg.Sequence, "sequence", "", app.SequenceUsage) | ||
| cmd.Flags().IntVarP(&flags.cfg.MaxPaths, "maxpaths", "m", 10, | ||
| "Maximum number of paths that are displayed") | ||
| cmd.Flags().BoolVarP(&flags.extended, "extended", "e", false, | ||
| "Show extended path meta data information") | ||
| cmd.Flags().BoolVarP(&flags.cfg.Refresh, "refresh", "r", false, | ||
| "Set refresh flag for SCION Daemon path request") | ||
| cmd.Flags().BoolVar(&flags.cfg.NoProbe, "no-probe", false, | ||
| "Do not probe the paths and print the health status") | ||
| cmd.Flags().BoolVarP(&flags.json, "json", "j", false, | ||
| "Write the output as machine readable json") | ||
| cmd.Flags().StringVar(&flags.format, "format", "human", | ||
| "Specify the output format (human|json|yaml)") | ||
| cmd.Flags().BoolVar(&flags.noColor, "no-color", false, "disable colored output") | ||
| cmd.Flags().StringVar(&flags.logLevel, "log.level", "", app.LogLevelUsage) | ||
| cmd.Flags().StringVar(&flags.tracer, "tracing.agent", "", "Tracing agent address") | ||
| cmd.Flags().BoolVar(&flags.cfg.Epic, "epic", false, "Enable EPIC.") | ||
| err := cmd.Flags().MarkDeprecated("json", "json flag is deprecated, use format flag") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return cmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| load("//tools/lint:go.bzl", "go_library") | ||
|
|
||
| go_library( | ||
| name = "go_default_library", | ||
| srcs = [ | ||
| "config.go", | ||
| "showpaths.go", | ||
| ], | ||
| importpath = "github.com/scionproto/scion/scion/fabrid", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//pkg/addr:go_default_library", | ||
| "//pkg/daemon:go_default_library", | ||
| "//pkg/private/common:go_default_library", | ||
| "//pkg/private/serrors:go_default_library", | ||
| "//pkg/snet:go_default_library", | ||
| "//private/app/path:go_default_library", | ||
| "//private/app/path/pathprobe:go_default_library", | ||
| "//private/path/pathpol:go_default_library", | ||
| ], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Copyright 2020 Anapaya Systems | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package fabrid | ||
|
|
||
| import ( | ||
| "net" | ||
| ) | ||
|
|
||
| // DefaultMaxPaths is the maximum number of paths that are displayed by default. | ||
| const DefaultMaxPaths = 10 | ||
|
|
||
| // Config configures the showpath run. | ||
| type Config struct { | ||
| // Local configures the local IP address to use. If this option is not provided, | ||
| // a local IP that can reach SCION hosts is selected with the help of the kernel. | ||
| Local net.IP | ||
| // Daemon configures a specific SCION Daemon address. | ||
| Daemon string | ||
| // MaxPaths configures the maximum number of displayed paths. If this option is | ||
| // not provided, the DefaultMaxPaths is used. | ||
| MaxPaths int | ||
| // Refresh configures whether the daemon is queried with the refresh flag. | ||
| Refresh bool | ||
| // NoProbe configures whether the path status is probed or not. | ||
| NoProbe bool | ||
| // Sequence is a string of space separated Hop Predicates that is used for | ||
| // filtering. | ||
| Sequence string | ||
| // Epic filters paths for which EPIC is not available, and when probing, the | ||
| // EPIC path type header is used. | ||
| Epic bool | ||
| } |
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