wehub-resource-sync
e071084ebe
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87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
// Package a2a provides the 'micro a2a' command for the Agent2Agent gateway.
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package a2a
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import (
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"fmt"
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"strings"
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"github.com/urfave/cli/v2"
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"go-micro.dev/v6/cmd"
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"go-micro.dev/v6/gateway/a2a"
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"go-micro.dev/v6/registry"
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)
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func init() {
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cmd.Register(&cli.Command{
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Name: "a2a",
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Usage: "Agent2Agent (A2A) protocol gateway",
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Description: `Expose registered agents over the A2A protocol so other agents can
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discover and call them.
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Examples:
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# Serve the A2A gateway over HTTP
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micro a2a serve --address :4000 --base_url https://agents.example.com
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# List agents and their A2A card URLs
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micro a2a list
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Agents are discovered from the registry (the ones advertising type=agent);
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an Agent Card is generated for each from its registry metadata, and
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incoming A2A tasks are translated to the agent's Agent.Chat RPC. This is
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the agent-side analog of 'micro mcp', which exposes services as tools.`,
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Subcommands: []*cli.Command{
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{
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Name: "serve",
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Usage: "Start the A2A gateway",
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Flags: []cli.Flag{
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&cli.StringFlag{Name: "address", Usage: "Address to listen on", Value: ":4000"},
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&cli.StringFlag{Name: "base_url", Usage: "Public base URL for Agent Cards"},
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},
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Action: func(c *cli.Context) error {
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return a2a.Serve(a2a.Options{
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Registry: registry.DefaultRegistry,
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Address: c.String("address"),
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BaseURL: c.String("base_url"),
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})
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},
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},
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{
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Name: "list",
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Usage: "List agents and their A2A card URLs",
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Flags: []cli.Flag{&cli.StringFlag{Name: "base_url", Usage: "Public base URL for Agent Cards", Value: "http://localhost:4000"}},
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Action: listAgents,
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},
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},
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})
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}
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func listAgents(c *cli.Context) error {
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base := strings.TrimRight(c.String("base_url"), "/")
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svcs, err := registry.ListServices()
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if err != nil {
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return err
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}
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found := false
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for _, s := range svcs {
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recs, err := registry.GetService(s.Name)
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if err != nil || len(recs) == 0 {
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continue
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}
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meta := recs[0].Metadata
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isAgent := meta != nil && meta["type"] == "agent"
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if !isAgent && len(recs[0].Nodes) > 0 {
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nm := recs[0].Nodes[0].Metadata
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isAgent = nm != nil && nm["type"] == "agent"
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}
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if !isAgent {
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continue
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}
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found = true
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fmt.Printf(" \033[36m◆\033[0m %-20s %s/agents/%s\n", s.Name, base, s.Name)
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}
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if !found {
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fmt.Println(" No agents registered.")
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}
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return nil
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}
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