path: root/cmd/swarm/mru_test.go

// Copyright 2017 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/>.

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io"
    "io/ioutil"
    "os"
    "testing"

    "github.com/ethereum/go-ethereum/swarm/api"
    "github.com/ethereum/go-ethereum/swarm/storage/mru/lookup"
    "github.com/ethereum/go-ethereum/swarm/testutil"

    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/swarm/storage/mru"

    "github.com/ethereum/go-ethereum/common/hexutil"
    "github.com/ethereum/go-ethereum/log"
    swarm "github.com/ethereum/go-ethereum/swarm/api/client"
    swarmhttp "github.com/ethereum/go-ethereum/swarm/api/http"
)

func TestCLIResourceUpdate(t *testing.T) {

    srv := testutil.NewTestSwarmServer(t, func(api *api.API) testutil.TestServer {
        return swarmhttp.NewServer(api, "")
    }, nil)
    log.Info("starting 1 node cluster")
    defer srv.Close()

    // create a private key file for signing
    pkfile, err := ioutil.TempFile("", "swarm-test")
    if err != nil {
        t.Fatal(err)
    }
    defer pkfile.Close()
    defer os.Remove(pkfile.Name())

    privkeyHex := "0000000000000000000000000000000000000000000000000000000000001979"
    privKey, _ := crypto.HexToECDSA(privkeyHex)
    address := crypto.PubkeyToAddress(privKey.PublicKey)

    // save the private key to a file
    _, err = io.WriteString(pkfile, privkeyHex)
    if err != nil {
        t.Fatal(err)
    }

    // compose a topic. We'll be doing quotes about Miguel de Cervantes
    var topic mru.Topic
    subject := []byte("Miguel de Cervantes")
    copy(topic[:], subject[:])
    name := "quotes"

    // prepare some data for the update
    data := []byte("En boca cerrada no entran moscas")
    hexData := hexutil.Encode(data)

    flags := []string{
        "--bzzapi", srv.URL,
        "--bzzaccount", pkfile.Name(),
        "resource", "update",
        "--topic", topic.Hex(),
        "--name", name,
        hexData}

    // create an update and expect an exit without errors
    log.Info(fmt.Sprintf("updating a resource with 'swarm resource update'"))
    cmd := runSwarm(t, flags...)
    cmd.ExpectExit()

    // now try to get the update using the client
    client := swarm.NewClient(srv.URL)
    if err != nil {
        t.Fatal(err)
    }

    // build the same topic as before, this time
    // we use NewTopic to create a topic automatically.
    topic, err = mru.NewTopic(name, subject)
    if err != nil {
        t.Fatal(err)
    }

    // View configures whose updates we will be looking up.
    view := mru.Feed{
        Topic: topic,
        User:  address,
    }

    // Build a query to get the latest update
    query := mru.NewQueryLatest(&view, lookup.NoClue)

    // retrieve content!
    reader, err := client.GetResource(query, "")
    if err != nil {
        t.Fatal(err)
    }

    retrieved, err := ioutil.ReadAll(reader)
    if err != nil {
        t.Fatal(err)
    }

    // check we retrieved the sent information
    if !bytes.Equal(data, retrieved) {
        t.Fatalf("Received %s, expected %s", retrieved, data)
    }

    // Now retrieve info for the next update
    flags = []string{
        "--bzzapi", srv.URL,
        "resource", "info",
        "--topic", topic.Hex(),
        "--user", address.Hex(),
    }

    log.Info(fmt.Sprintf("getting resource info with 'swarm resource info'"))
    cmd = runSwarm(t, flags...)
    _, matches := cmd.ExpectRegexp(`.*`) // regex hack to extract stdout
    cmd.ExpectExit()

    // verify we can deserialize the result as a valid JSON
    var request mru.Request
    err = json.Unmarshal([]byte(matches[0]), &request)
    if err != nil {
        t.Fatal(err)
    }

    // make sure the retrieved view is the same
    if request.Feed != view {
        t.Fatalf("Expected view to be: %s, got %s", view, request.Feed)
    }

    // test publishing a manifest
    flags = []string{
        "--bzzapi", srv.URL,
        "--bzzaccount", pkfile.Name(),
        "resource", "create",
        "--topic", topic.Hex(),
    }

    log.Info(fmt.Sprintf("Publishing manifest with 'swarm resource create'"))
    cmd = runSwarm(t, flags...)
    _, matches = cmd.ExpectRegexp(`[a-f\d]{64}`) // regex hack to extract stdout
    cmd.ExpectExit()

    manifestAddress := matches[0] // read the received resource manifest

    // now attempt to lookup the latest update using a manifest instead
    reader, err = client.GetResource(nil, manifestAddress)
    if err != nil {
        t.Fatal(err)
    }

    retrieved, err = ioutil.ReadAll(reader)
    if err != nil {
        t.Fatal(err)
    }

    if !bytes.Equal(data, retrieved) {
        t.Fatalf("Received %s, expected %s", retrieved, data)
    }
}