github.com/braveheart12/insolar-09-08-19@v0.8.7/network/servicenetwork/integr_pulsar.go (about)

     1  /*
     2   * The Clear BSD License
     3   *
     4   * Copyright (c) 2019 Insolar Technologies
     5   *
     6   * All rights reserved.
     7   *
     8   * Redistribution and use in source and binary forms, with or without modification, are permitted (subject to the limitations in the disclaimer below) provided that the following conditions are met:
     9   *
    10   *  Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    11   *  Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    12   *  Neither the name of Insolar Technologies nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
    13   *
    14   * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    15   *
    16   */
    17  
    18  package servicenetwork
    19  
    20  import (
    21  	"context"
    22  	"time"
    23  
    24  	"github.com/insolar/insolar/component"
    25  	"github.com/insolar/insolar/configuration"
    26  	"github.com/insolar/insolar/core"
    27  	"github.com/insolar/insolar/network/pulsenetwork"
    28  	"github.com/insolar/insolar/network/transport"
    29  	"github.com/insolar/insolar/network/transport/relay"
    30  	"github.com/insolar/insolar/pulsar/entropygenerator"
    31  	"github.com/pkg/errors"
    32  )
    33  
    34  type TestPulsar interface {
    35  	Start(ctx context.Context, bootstrapHosts []string) error
    36  	component.Stopper
    37  }
    38  
    39  func NewTestPulsar(pulseTimeMs, requestsTimeoutMs, pulseDelta int32) (TestPulsar, error) {
    40  	transportCfg := configuration.Transport{
    41  		Protocol:  "TCP",
    42  		Address:   "127.0.0.1:0",
    43  		BehindNAT: false,
    44  	}
    45  	tp, err := transport.NewTransport(transportCfg, relay.NewProxy())
    46  	if err != nil {
    47  		return nil, errors.Wrap(err, "Failed to create distributor transport")
    48  	}
    49  	return &testPulsar{
    50  		transport:         tp,
    51  		generator:         &entropygenerator.StandardEntropyGenerator{},
    52  		pulseTimeMs:       pulseTimeMs,
    53  		reqTimeoutMs:      requestsTimeoutMs,
    54  		pulseDelta:        pulseDelta,
    55  		cancellationToken: make(chan struct{}),
    56  	}, nil
    57  }
    58  
    59  type testPulsar struct {
    60  	transport   transport.Transport
    61  	distributor core.PulseDistributor
    62  	generator   entropygenerator.EntropyGenerator
    63  	cm          *component.Manager
    64  
    65  	pulseTimeMs  int32
    66  	reqTimeoutMs int32
    67  	pulseDelta   int32
    68  
    69  	cancellationToken chan struct{}
    70  }
    71  
    72  func (tp *testPulsar) Start(ctx context.Context, bootstrapHosts []string) error {
    73  	var err error
    74  	distributorCfg := configuration.PulseDistributor{
    75  		BootstrapHosts:            bootstrapHosts,
    76  		PingRequestTimeout:        tp.reqTimeoutMs,
    77  		RandomHostsRequestTimeout: tp.reqTimeoutMs,
    78  		PulseRequestTimeout:       tp.reqTimeoutMs,
    79  		RandomNodesCount:          1,
    80  	}
    81  	tp.distributor, err = pulsenetwork.NewDistributor(distributorCfg)
    82  	if err != nil {
    83  		return errors.Wrap(err, "Failed to create pulse distributor")
    84  	}
    85  
    86  	tp.cm = &component.Manager{}
    87  	tp.cm.Inject(tp.transport, tp.distributor)
    88  
    89  	if err = tp.cm.Init(ctx); err != nil {
    90  		return errors.Wrap(err, "Failed to init test pulsar components")
    91  	}
    92  	if err = tp.cm.Start(ctx); err != nil {
    93  		return errors.Wrap(err, "Failed to start test pulsar components")
    94  	}
    95  
    96  	go tp.distribute(ctx)
    97  	return nil
    98  }
    99  
   100  func (tp *testPulsar) distribute(ctx context.Context) {
   101  	timeNow := time.Now()
   102  	pulseNumber := core.CalculatePulseNumber(timeNow)
   103  	pulse := core.Pulse{
   104  		PulseNumber:      pulseNumber,
   105  		Entropy:          tp.generator.GenerateEntropy(),
   106  		NextPulseNumber:  pulseNumber + core.PulseNumber(tp.pulseDelta),
   107  		PrevPulseNumber:  pulseNumber - core.PulseNumber(tp.pulseDelta),
   108  		EpochPulseNumber: 1,
   109  		OriginID:         [16]byte{206, 41, 229, 190, 7, 240, 162, 155, 121, 245, 207, 56, 161, 67, 189, 0},
   110  		PulseTimestamp:   timeNow.Unix(),
   111  	}
   112  
   113  	for {
   114  		select {
   115  		case <-time.After(time.Duration(tp.pulseTimeMs) * time.Millisecond):
   116  			go tp.distributor.Distribute(ctx, pulse)
   117  			pulse = tp.incrementPulse(pulse)
   118  		case <-tp.cancellationToken:
   119  			return
   120  		}
   121  	}
   122  }
   123  
   124  func (tp *testPulsar) incrementPulse(pulse core.Pulse) core.Pulse {
   125  	newPulse := pulse.PulseNumber + core.PulseNumber(tp.pulseDelta)
   126  	return core.Pulse{
   127  		PulseNumber:      newPulse,
   128  		Entropy:          tp.generator.GenerateEntropy(),
   129  		NextPulseNumber:  newPulse + core.PulseNumber(tp.pulseDelta),
   130  		PrevPulseNumber:  pulse.PulseNumber,
   131  		EpochPulseNumber: pulse.EpochPulseNumber,
   132  		OriginID:         pulse.OriginID,
   133  		PulseTimestamp:   time.Now().Unix(),
   134  	}
   135  }
   136  
   137  func (tp *testPulsar) Stop(ctx context.Context) error {
   138  	if err := tp.cm.Stop(ctx); err != nil {
   139  		return errors.Wrap(err, "Failed to stop test pulsar components")
   140  	}
   141  	close(tp.cancellationToken)
   142  	return nil
   143  }