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-rw-r--r--cmd/swarm/feeds.go238
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diff --git a/cmd/swarm/feeds.go b/cmd/swarm/feeds.go
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--- a/cmd/swarm/feeds.go
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-// Copyright 2016 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-
-// Command feed allows the user to create and update signed Swarm feeds
-package main
-
-import (
- "fmt"
- "strings"
-
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/common/hexutil"
- "github.com/ethereum/go-ethereum/crypto"
-
- "github.com/ethereum/go-ethereum/cmd/utils"
- swarm "github.com/ethereum/go-ethereum/swarm/api/client"
- "github.com/ethereum/go-ethereum/swarm/storage/feed"
- "gopkg.in/urfave/cli.v1"
-)
-
-var feedCommand = cli.Command{
- CustomHelpTemplate: helpTemplate,
- Name: "feed",
- Usage: "(Advanced) Create and update Swarm Feeds",
- ArgsUsage: "<create|update|info>",
- Description: "Works with Swarm Feeds",
- Subcommands: []cli.Command{
- {
- Action: feedCreateManifest,
- CustomHelpTemplate: helpTemplate,
- Name: "create",
- Usage: "creates and publishes a new feed manifest",
- Description: `creates and publishes a new feed manifest pointing to a specified user's updates about a particular topic.
- The feed topic can be built in the following ways:
- * use --topic to set the topic to an arbitrary binary hex string.
- * use --name to set the topic to a human-readable name.
- For example --name could be set to "profile-picture", meaning this feed allows to get this user's current profile picture.
- * use both --topic and --name to create named subtopics.
- For example, --topic could be set to an Ethereum contract address and --name could be set to "comments", meaning
- this feed tracks a discussion about that contract.
- The --user flag allows to have this manifest refer to a user other than yourself. If not specified,
- it will then default to your local account (--bzzaccount)`,
- Flags: []cli.Flag{SwarmFeedNameFlag, SwarmFeedTopicFlag, SwarmFeedUserFlag},
- },
- {
- Action: feedUpdate,
- CustomHelpTemplate: helpTemplate,
- Name: "update",
- Usage: "updates the content of an existing Swarm Feed",
- ArgsUsage: "<0x Hex data>",
- Description: `publishes a new update on the specified topic
- The feed topic can be built in the following ways:
- * use --topic to set the topic to an arbitrary binary hex string.
- * use --name to set the topic to a human-readable name.
- For example --name could be set to "profile-picture", meaning this feed allows to get this user's current profile picture.
- * use both --topic and --name to create named subtopics.
- For example, --topic could be set to an Ethereum contract address and --name could be set to "comments", meaning
- this feed tracks a discussion about that contract.
-
- If you have a manifest, you can specify it with --manifest to refer to the feed,
- instead of using --topic / --name
- `,
- Flags: []cli.Flag{SwarmFeedManifestFlag, SwarmFeedNameFlag, SwarmFeedTopicFlag},
- },
- {
- Action: feedInfo,
- CustomHelpTemplate: helpTemplate,
- Name: "info",
- Usage: "obtains information about an existing Swarm feed",
- Description: `obtains information about an existing Swarm feed
- The topic can be specified directly with the --topic flag as an hex string
- If no topic is specified, the default topic (zero) will be used
- The --name flag can be used to specify subtopics with a specific name.
- The --user flag allows to refer to a user other than yourself. If not specified,
- it will then default to your local account (--bzzaccount)
- If you have a manifest, you can specify it with --manifest instead of --topic / --name / ---user
- to refer to the feed`,
- Flags: []cli.Flag{SwarmFeedManifestFlag, SwarmFeedNameFlag, SwarmFeedTopicFlag, SwarmFeedUserFlag},
- },
- },
-}
-
-func NewGenericSigner(ctx *cli.Context) feed.Signer {
- return feed.NewGenericSigner(getPrivKey(ctx))
-}
-
-func getTopic(ctx *cli.Context) (topic feed.Topic) {
- var name = ctx.String(SwarmFeedNameFlag.Name)
- var relatedTopic = ctx.String(SwarmFeedTopicFlag.Name)
- var relatedTopicBytes []byte
- var err error
-
- if relatedTopic != "" {
- relatedTopicBytes, err = hexutil.Decode(relatedTopic)
- if err != nil {
- utils.Fatalf("Error parsing topic: %s", err)
- }
- }
-
- topic, err = feed.NewTopic(name, relatedTopicBytes)
- if err != nil {
- utils.Fatalf("Error parsing topic: %s", err)
- }
- return topic
-}
-
-// swarm feed create <frequency> [--name <name>] [--data <0x Hexdata> [--multihash=false]]
-// swarm feed update <Manifest Address or ENS domain> <0x Hexdata> [--multihash=false]
-// swarm feed info <Manifest Address or ENS domain>
-
-func feedCreateManifest(ctx *cli.Context) {
- var (
- bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
- client = swarm.NewClient(bzzapi)
- )
-
- newFeedUpdateRequest := feed.NewFirstRequest(getTopic(ctx))
- newFeedUpdateRequest.Feed.User = feedGetUser(ctx)
-
- manifestAddress, err := client.CreateFeedWithManifest(newFeedUpdateRequest)
- if err != nil {
- utils.Fatalf("Error creating feed manifest: %s", err.Error())
- return
- }
- fmt.Println(manifestAddress) // output manifest address to the user in a single line (useful for other commands to pick up)
-
-}
-
-func feedUpdate(ctx *cli.Context) {
- args := ctx.Args()
-
- var (
- bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
- client = swarm.NewClient(bzzapi)
- manifestAddressOrDomain = ctx.String(SwarmFeedManifestFlag.Name)
- )
-
- if len(args) < 1 {
- fmt.Println("Incorrect number of arguments")
- cli.ShowCommandHelpAndExit(ctx, "update", 1)
- return
- }
-
- signer := NewGenericSigner(ctx)
-
- data, err := hexutil.Decode(args[0])
- if err != nil {
- utils.Fatalf("Error parsing data: %s", err.Error())
- return
- }
-
- var updateRequest *feed.Request
- var query *feed.Query
-
- if manifestAddressOrDomain == "" {
- query = new(feed.Query)
- query.User = signer.Address()
- query.Topic = getTopic(ctx)
- }
-
- // Retrieve a feed update request
- updateRequest, err = client.GetFeedRequest(query, manifestAddressOrDomain)
- if err != nil {
- utils.Fatalf("Error retrieving feed status: %s", err.Error())
- }
-
- // Check that the provided signer matches the request to sign
- if updateRequest.User != signer.Address() {
- utils.Fatalf("Signer address does not match the update request")
- }
-
- // set the new data
- updateRequest.SetData(data)
-
- // sign update
- if err = updateRequest.Sign(signer); err != nil {
- utils.Fatalf("Error signing feed update: %s", err.Error())
- }
-
- // post update
- err = client.UpdateFeed(updateRequest)
- if err != nil {
- utils.Fatalf("Error updating feed: %s", err.Error())
- return
- }
-}
-
-func feedInfo(ctx *cli.Context) {
- var (
- bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/")
- client = swarm.NewClient(bzzapi)
- manifestAddressOrDomain = ctx.String(SwarmFeedManifestFlag.Name)
- )
-
- var query *feed.Query
- if manifestAddressOrDomain == "" {
- query = new(feed.Query)
- query.Topic = getTopic(ctx)
- query.User = feedGetUser(ctx)
- }
-
- metadata, err := client.GetFeedRequest(query, manifestAddressOrDomain)
- if err != nil {
- utils.Fatalf("Error retrieving feed metadata: %s", err.Error())
- return
- }
- encodedMetadata, err := metadata.MarshalJSON()
- if err != nil {
- utils.Fatalf("Error encoding metadata to JSON for display:%s", err)
- }
- fmt.Println(string(encodedMetadata))
-}
-
-func feedGetUser(ctx *cli.Context) common.Address {
- var user = ctx.String(SwarmFeedUserFlag.Name)
- if user != "" {
- return common.HexToAddress(user)
- }
- pk := getPrivKey(ctx)
- if pk == nil {
- utils.Fatalf("Cannot read private key. Must specify --user or --bzzaccount")
- }
- return crypto.PubkeyToAddress(pk.PublicKey)
-
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-13 12:02:03 +0800