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Embedded IoT sensor system for harvesting environment data and publishing it onto the permissioned blockchain network

License: Apache License 2.0

Go 99.42% Makefile 0.58%
blockchain embedded golang hyperledger hyperledger-fabric internet-of-things iot raspberry-pi supply-chain

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cywforce pinkbluersglobal matega89 rrsc

chainmetric-iot's Issues

Fatal error: concurrent map writes

Rarely occured concurrent map writes.

Seems like an issue with I2C scan routine.

See the full log bellow:

sudo ./bin/sensor
 [fabsdk/core] 2021/05/08 02:28:04 UTC - cryptosuite.GetDefault -> INFO No default cryptosuite found, using default SW implementation
2021.05.08 03:28:05 0001 INFO [sensorsys] Init -> Device specs has being updated in blockchain with id: device3168171730c28bgrves05mif5eklbg
fatal error: concurrent map writes

goroutine 93 [running]:
runtime.throw(0x92e9e7, 0x15)
        /usr/local/go/src/runtime/panic.go:1117 +0x5c fp=0x2eb2f44 sp=0x2eb2f30 pc=0x48804
runtime.mapassign_fast32(0x802fb8, 0x2b5ad80, 0x1, 0xf81e74)
        /usr/local/go/src/runtime/map_fast32.go:101 +0x320 fp=0x2eb2f60 sp=0x2eb2f44 pc=0x21ba0
github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C.func1(0x2bb80e0, 0x2b5ad80, 0x2b5efe0, 0xc, 0x10, 0x979660, 0xa3a5dc, 0x29fa9c0, 0x2b5ae60)
        /home/pi/sensorsys/drivers/periphery/detect.go:47 +0xc8 fp=0x2eb2fc4 sp=0x2eb2f60 pc=0x4e0930
runtime.goexit()
        /usr/local/go/src/runtime/asm_arm.s:841 +0x4 fp=0x2eb2fc4 sp=0x2eb2fc4 pc=0x7c224
created by github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C
        /home/pi/sensorsys/drivers/periphery/detect.go:38 +0x19c

goroutine 1 [chan receive]:
main.main()
        /home/pi/sensorsys/main.go:58 +0x9c

goroutine 8 [select]:
github.com/syndtr/goleveldb/leveldb/util.(*BufferPool).drain(0x28c6b00)
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer_pool.go:206 +0xdc
created by github.com/syndtr/goleveldb/leveldb/util.NewBufferPool
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer_pool.go:237 +0x148

goroutine 10 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compactionError(0x29eaea0)
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go:90 +0x80
created by github.com/syndtr/goleveldb/leveldb.openDB
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db.go:142 +0x304

goroutine 11 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).mpoolDrain(0x29eaea0)
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db_state.go:101 +0xa0
created by github.com/syndtr/goleveldb/leveldb.openDB
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db.go:143 +0x320

goroutine 12 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).tCompaction(0x29eaea0)
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go:825 +0x1a4
created by github.com/syndtr/goleveldb/leveldb.openDB
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db.go:149 +0x420

goroutine 13 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).mCompaction(0x29eaea0)
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go:762 +0x100
created by github.com/syndtr/goleveldb/leveldb.openDB
        /home/pi/sensorsys/vendor/github.com/syndtr/goleveldb/leveldb/db.go:150 +0x43c

goroutine 36 [select]:
github.com/go-ble/ble/linux/hci.(*HCI).Accept(0x29eac60, 0x1, 0x286a180, 0x2a5c140, 0x2a5c148)
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/hci/gap.go:185 +0xac
github.com/go-ble/ble/linux.loop(0x29eac60, 0x2a60a60, 0x203)
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/device.go:55 +0x1c
created by github.com/go-ble/ble/linux.NewDeviceWithNameAndHandler
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/device.go:48 +0x230

goroutine 35 [syscall]:
syscall.Syscall(0x3, 0x56, 0x2ee6000, 0x1000, 0x4151e8, 0x2a5ea58, 0x0)
        /usr/local/go/src/syscall/asm_linux_arm.s:14 +0x8
golang.org/x/sys/unix.read(0x56, 0x2ee6000, 0x1000, 0x1000, 0x2ee6000, 0x7, 0x2a5d617)
        /home/pi/sensorsys/vendor/golang.org/x/sys/unix/zsyscall_linux.go:1215 +0x40
golang.org/x/sys/unix.Read(...)
        /home/pi/sensorsys/vendor/golang.org/x/sys/unix/syscall_unix.go:156
github.com/go-ble/ble/linux/hci/socket.(*Socket).Read(0x2a5ea50, 0x2ee6000, 0x1000, 0x1000, 0x0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/hci/socket/socket.go:123 +0x50
github.com/go-ble/ble/linux/hci.(*HCI).sktLoop(0x29eac60)
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/hci/hci.go:300 +0x90
created by github.com/go-ble/ble/linux/hci.(*HCI).Init
        /home/pi/sensorsys/vendor/github.com/go-ble/ble/linux/hci/hci.go:153 +0x4cc

goroutine 38 [syscall]:
os/signal.signal_recv(0x286a1c0)
        /usr/local/go/src/runtime/sigqueue.go:168 +0x158
os/signal.loop()
        /usr/local/go/src/os/signal/signal_unix.go:23 +0x14
created by os/signal.Notify.func1.1
        /usr/local/go/src/os/signal/signal.go:151 +0x34

goroutine 43 [select]:
google.golang.org/grpc.(*ccBalancerWrapper).watcher(0x28f3110)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/balancer_conn_wrappers.go:69 +0x88
created by google.golang.org/grpc.newCCBalancerWrapper
        /home/pi/sensorsys/vendor/google.golang.org/grpc/balancer_conn_wrappers.go:60 +0x108

goroutine 53 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.checkTimeStarted(0x2898ae0, 0xf46b0400, 0x14)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:284 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.(*Reference).ensureTimerStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:270 +0x98

goroutine 40 [chan receive]:
main.shutdown()
        /home/pi/sensorsys/main.go:82 +0x28
created by main.main
        /home/pi/sensorsys/main.go:56 +0x84

goroutine 39 [runnable]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/futurevalue.(*Value).get(0x28d1480, 0x29d5a01, 0x2b60901, 0x1d900, 0x6c0038, 0x846398)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/futurevalue/futurevalue.go:93 +0x40
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/futurevalue.(*Value).Get(0x28d1480, 0x0, 0x0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/futurevalue/futurevalue.go:60 +0x48
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazycache.(*Cache).Get(0x28f2390, 0xa594c288, 0x2b5ace0, 0x0, 0x0, 0x0, 0xa3a5fc, 0x900ce8, 0x394a6553, 0xc01d9bdb)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazycache/lazycache.go:109 +0xa0
github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr.(*contextCache).loadChannelCfgRef(0x28f2360, 0x2943e60, 0xe, 0x1b500, 0x2b60900, 0x8)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr/contextcache.go:202 +0x134
github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr.(*contextCache).GetChannelConfig(0x28f2360, 0x2943e60, 0xe, 0x18, 0x2b456e0, 0x292cfc0, 0x129)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr/contextcache.go:186 +0x34
github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr.(*ChannelService).ChannelConfig(...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr/chprovider.go:115
github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr.(*ChannelService).Transactor(0x289a7f8, 0xa3a5fc, 0x2b456e0, 0x89af98, 0x1, 0x2b456e0, 0x6a0060)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/provider/chpvdr/chprovider.go:120 +0x30
github.com/hyperledger/fabric-sdk-go/pkg/client/channel.(*Client).prepareHandlerContexts(0x2ad26c0, 0xa3a5fc, 0x2b456e0, 0x90539b, 0x6, 0x90ad90, 0x8, 0x2b86e90, 0x1, 0x1, ...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/channel/chclient.go:223 +0xd8
github.com/hyperledger/fabric-sdk-go/pkg/client/channel.(*Client).InvokeHandler(0x2ad26c0, 0xa2fbac, 0x2b608f8, 0x90539b, 0x6, 0x90ad90, 0x8, 0x2b86e90, 0x1, 0x1, ...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/channel/chclient.go:155 +0x174
github.com/hyperledger/fabric-sdk-go/pkg/client/channel.callQuery(0x2ad26c0, 0x90539b, 0x6, 0x90ad90, 0x8, 0x2b86e90, 0x1, 0x1, 0x0, 0x0, ...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/channel/chclientrun_std.go:16 +0x84
github.com/hyperledger/fabric-sdk-go/pkg/client/channel.(*Client).Query(0x2ad26c0, 0x90539b, 0x6, 0x90ad90, 0x8, 0x2b86e90, 0x1, 0x1, 0x0, 0x0, ...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/client/channel/chclient.go:99 +0x100
github.com/hyperledger/fabric-sdk-go/pkg/gateway.(*Transaction).Evaluate(0x2b45638, 0x2e97e68, 0x1, 0x1, 0x0, 0x0, 0x2b45638, 0x0, 0x0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/gateway/transaction.go:94 +0x1dc
github.com/hyperledger/fabric-sdk-go/pkg/gateway.(*Contract).EvaluateTransaction(0x2af85b8, 0x90ad90, 0x8, 0x2e97e68, 0x1, 0x1, 0x0, 0x1c, 0x8ad3d0, 0x1d9a0, ...)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/gateway/contract.go:54 +0x98
github.com/timoth-y/chainmetric-sensorsys/network/blockchain.(*AssetsContract).Receive(0x2963858, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2b20eec, 0x0, 0x0, ...)
        /home/pi/sensorsys/network/blockchain/assets.go:33 +0xcc
github.com/timoth-y/chainmetric-sensorsys/drivers/device.(*Device).locateAssets(0x28de040, 0x0, 0x0)
        /home/pi/sensorsys/drivers/device/cache.go:57 +0xd8
github.com/timoth-y/chainmetric-sensorsys/drivers/device.(*Device).CacheBlockchainState(0x28de040, 0x0, 0x0)
        /home/pi/sensorsys/drivers/device/cache.go:37 +0x28
github.com/timoth-y/chainmetric-sensorsys/shared.MustExecute(0x2e97fd0, 0x94e549, 0x27)
        /home/pi/sensorsys/shared/utils.go:22 +0x1c
main.startup()
        /home/pi/sensorsys/main.go:74 +0x14c
created by main.main
        /home/pi/sensorsys/main.go:55 +0x70

goroutine 74 [chan receive]:
github.com/hyperledger/fabric-sdk-go/pkg/fab/events/service/dispatcher.(*Dispatcher).Start.func1(0x2b06600)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/service/dispatcher/dispatcher.go:129 +0x98
created by github.com/hyperledger/fabric-sdk-go/pkg/fab/events/service/dispatcher.(*Dispatcher).Start
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/service/dispatcher/dispatcher.go:122 +0xc0

goroutine 44 [chan receive]:
google.golang.org/grpc.(*addrConn).resetTransport(0x29fcf00)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/clientconn.go:1156 +0x470
created by google.golang.org/grpc.(*addrConn).connect
        /home/pi/sensorsys/vendor/google.golang.org/grpc/clientconn.go:799 +0xa8

goroutine 50 [IO wait]:
internal/poll.runtime_pollWait(0xa59a2ae0, 0x72, 0xffffffff)
        /usr/local/go/src/runtime/netpoll.go:222 +0x44
internal/poll.(*pollDesc).wait(0x289f914, 0x72, 0x5900, 0x599f, 0xffffffff)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x30
internal/poll.(*pollDesc).waitRead(...)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:92
internal/poll.(*FD).Read(0x289f900, 0x2a9e000, 0x599f, 0x599f, 0x0, 0x0, 0x0)
        /usr/local/go/src/internal/poll/fd_unix.go:166 +0x1a4
net.(*netFD).Read(0x289f900, 0x2a9e000, 0x599f, 0x599f, 0x2a9e005, 0x97a004, 0x599a)
        /usr/local/go/src/net/fd_posix.go:55 +0x38
net.(*conn).Read(0x28e2ea0, 0x2a9e000, 0x599f, 0x599f, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/net.go:183 +0x64
crypto/tls.(*atLeastReader).Read(0x2b86800, 0x2a9e000, 0x599f, 0x599f, 0x10, 0x2b86800, 0x292cfc0)
        /usr/local/go/src/crypto/tls/conn.go:776 +0x78
bytes.(*Buffer).ReadFrom(0x29f156c, 0xa2f1d4, 0x2b86800, 0xe3, 0x1fc0ac, 0x823b60, 0x8e8e80)
        /usr/local/go/src/bytes/buffer.go:204 +0xa4
crypto/tls.(*Conn).readFromUntil(0x29f1400, 0xa305ac, 0x28e2ea0, 0x5, 0x28e2ea0, 0xcd)
        /usr/local/go/src/crypto/tls/conn.go:798 +0xc4
crypto/tls.(*Conn).readRecordOrCCS(0x29f1400, 0x0, 0x0, 0x168ec)
        /usr/local/go/src/crypto/tls/conn.go:605 +0xfc
crypto/tls.(*Conn).readRecord(...)
        /usr/local/go/src/crypto/tls/conn.go:573
crypto/tls.(*Conn).Read(0x29f1400, 0x298c000, 0x8000, 0x8000, 0x0, 0x0, 0x0)
        /usr/local/go/src/crypto/tls/conn.go:1276 +0x154
bufio.(*Reader).Read(0x295cb10, 0x289dc20, 0x9, 0x9, 0x567d74, 0x2b5a164, 0xffffffff)
        /usr/local/go/src/bufio/bufio.go:227 +0x22c
io.ReadAtLeast(0xa2f0e4, 0x295cb10, 0x289dc20, 0x9, 0x9, 0x9, 0x561b3c, 0x2b5a164, 0x29c60f0)
        /usr/local/go/src/io/io.go:328 +0x6c
io.ReadFull(...)
        /usr/local/go/src/io/io.go:347
golang.org/x/net/http2.readFrameHeader(0x289dc20, 0x9, 0x9, 0xa2f0e4, 0x295cb10, 0x0, 0x0, 0x0, 0x289be01, 0x0)
        /home/pi/sensorsys/vendor/golang.org/x/net/http2/frame.go:237 +0x54
golang.org/x/net/http2.(*Framer).ReadFrame(0x289dc00, 0x289bef0, 0x289bef0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/golang.org/x/net/http2/frame.go:492 +0x74
google.golang.org/grpc/internal/transport.(*http2Client).reader(0x29eb9e0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:1273 +0x10c
created by google.golang.org/grpc/internal/transport.newHTTP2Client
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:300 +0x9ac

goroutine 52 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/fab/comm.(*CachingConnector).janitor(0x289efa0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/comm/connector.go:309 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/fab/comm.(*CachingConnector).ensureJanitorStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/comm/connector.go:284 +0xac

goroutine 51 [runnable]:
runtime.Gosched(...)
        /usr/local/go/src/runtime/proc.go:292
google.golang.org/grpc/internal/transport.(*loopyWriter).run(0x295cba0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/controlbuf.go:549 +0x18c
google.golang.org/grpc/internal/transport.newHTTP2Client.func3(0x29eb9e0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:346 +0x5c
created by google.golang.org/grpc/internal/transport.newHTTP2Client
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:344 +0xb9c

goroutine 54 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.checkTimeStarted(0x2a59020, 0x0, 0x0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:284 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.(*Reference).ensureTimerStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:270 +0x98

goroutine 75 [select]:
google.golang.org/grpc.newClientStream.func5(0x29285a0, 0x2afed20, 0xa3a5fc, 0x2b44978)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:318 +0x98
created by google.golang.org/grpc.newClientStream
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:317 +0xa7c

goroutine 67 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.checkTimeStarted(0x2a596e0, 0x2a05f200, 0x1)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:284 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.(*Reference).ensureTimerStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:270 +0x98

goroutine 77 [chan receive]:
github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client.(*Client).monitorConnection(0x2b010a0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/client.go:370 +0x7c
created by github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client.(*Client).connect.func1
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/client.go:234 +0xb8

goroutine 78 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.checkTimeStarted(0x2a58fc0, 0xf08eb000, 0x1b)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:284 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.(*Reference).ensureTimerStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:270 +0x98

goroutine 76 [select]:
google.golang.org/grpc/internal/transport.(*recvBufferReader).readClient(0x2b437a0, 0x2b41918, 0x5, 0x5, 0x84324, 0x2b5c090, 0x1)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/transport.go:186 +0x88
google.golang.org/grpc/internal/transport.(*recvBufferReader).Read(0x2b437a0, 0x2b41918, 0x5, 0x5, 0x2b5c090, 0x0, 0x2b5c090)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/transport.go:166 +0x18c
google.golang.org/grpc/internal/transport.(*transportReader).Read(0x2b449c0, 0x2b41918, 0x5, 0x5, 0x0, 0x83f01, 0x568d38)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/transport.go:479 +0x40
io.ReadAtLeast(0xa3041c, 0x2b449c0, 0x2b41918, 0x5, 0x5, 0x5, 0x0, 0x2826000, 0xf6fee4)
        /usr/local/go/src/io/io.go:328 +0x6c
io.ReadFull(...)
        /usr/local/go/src/io/io.go:347
google.golang.org/grpc/internal/transport.(*Stream).Read(0x2b305a0, 0x2b41918, 0x5, 0x5, 0x2b44f78, 0x29323c0, 0xbf)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/transport.go:463 +0x94
google.golang.org/grpc.(*parser).recvMsg(0x2b41910, 0x6400000, 0xed6610, 0x8ecfd0, 0x29c6048, 0x0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/rpc_util.go:510 +0x3c
google.golang.org/grpc.recvAndDecompress(0x2b41910, 0x2b305a0, 0x0, 0x0, 0x6400000, 0x0, 0x0, 0x0, 0x29323c0, 0xbf, ...)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/rpc_util.go:641 +0x24
google.golang.org/grpc.recv(0x2b41910, 0xa59500f0, 0xf81e74, 0x2b305a0, 0x0, 0x0, 0x8dc660, 0x2b45518, 0x6400000, 0x0, ...)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/rpc_util.go:709 +0x54
google.golang.org/grpc.(*csAttempt).recvMsg(0x2addea0, 0x8dc660, 0x2b45518, 0x0, 0xffffffff, 0x0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:884 +0xb4
google.golang.org/grpc.(*clientStream).RecvMsg.func1(0x2addea0, 0xf82388, 0x1)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:735 +0x34
google.golang.org/grpc.(*clientStream).withRetry(0x2afed20, 0x2977f70, 0x2977f58, 0xfff, 0xa59d9080)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:589 +0x250
google.golang.org/grpc.(*clientStream).RecvMsg(0x2afed20, 0x8dc660, 0x2b45518, 0x845c01, 0x714a6c)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/stream.go:734 +0xcc
github.com/hyperledger/fabric-protos-go/peer.(*deliverDeliverFilteredClient).Recv(0x2b15f70, 0xa595dcf8, 0x2b15f70, 0x2b60698)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-protos-go/peer/events.pb.go:568 +0x48
github.com/hyperledger/fabric-sdk-go/pkg/fab/events/deliverclient/connection.(*DeliverConnection).Receive(0x2b41920, 0x295b0c0)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/deliverclient/connection/connection.go:119 +0x5c
created by github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher.(*Dispatcher).HandleConnectEvent
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher/dispatcher.go:139 +0x278

goroutine 70 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.checkTimeStarted(0x2a595c0, 0x2a05f200, 0x1)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:284 +0x110
created by github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref.(*Reference).ensureTimerStarted
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/util/concurrent/lazyref/lazyref.go:270 +0x98

goroutine 79 [select]:
github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher.(*Dispatcher).monitorPeer(0x2b01030, 0x2b51940)
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher/dispatcher.go:250 +0x154
created by github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher.(*Dispatcher).HandleConnectedEvent
        /home/pi/sensorsys/vendor/github.com/hyperledger/fabric-sdk-go/pkg/fab/events/client/dispatcher/dispatcher.go:191 +0x128

goroutine 80 [select]:
google.golang.org/grpc.(*ccBalancerWrapper).watcher(0x2b68120)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/balancer_conn_wrappers.go:69 +0x88
created by google.golang.org/grpc.newCCBalancerWrapper
        /home/pi/sensorsys/vendor/google.golang.org/grpc/balancer_conn_wrappers.go:60 +0x108

goroutine 81 [chan receive]:
google.golang.org/grpc.(*addrConn).resetTransport(0x2af1980)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/clientconn.go:1156 +0x470
created by google.golang.org/grpc.(*addrConn).connect
        /home/pi/sensorsys/vendor/google.golang.org/grpc/clientconn.go:799 +0xa8

goroutine 87 [IO wait]:
internal/poll.runtime_pollWait(0xa59a2a48, 0x72, 0xffffffff)
        /usr/local/go/src/runtime/netpoll.go:222 +0x44
internal/poll.(*pollDesc).wait(0x2b62744, 0x72, 0x800, 0x800, 0xffffffff)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x30
internal/poll.(*pollDesc).waitRead(...)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:92
internal/poll.(*FD).Read(0x2b62730, 0x2b84000, 0x800, 0x800, 0x0, 0x0, 0x0)
        /usr/local/go/src/internal/poll/fd_unix.go:166 +0x1a4
net.(*netFD).Read(0x2b62730, 0x2b84000, 0x800, 0x800, 0x2b84005, 0x97a004, 0x7fb)
        /usr/local/go/src/net/fd_posix.go:55 +0x38
net.(*conn).Read(0x2b603b0, 0x2b84000, 0x800, 0x800, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/net.go:183 +0x64
crypto/tls.(*atLeastReader).Read(0x2b867d0, 0x2b84000, 0x800, 0x800, 0x10, 0x2b867d0, 0x292cfc0)
        /usr/local/go/src/crypto/tls/conn.go:776 +0x78
bytes.(*Buffer).ReadFrom(0x2b0e36c, 0xa2f1d4, 0x2b867d0, 0x27, 0x1fc0ac, 0x823b60, 0x8e8e80)
        /usr/local/go/src/bytes/buffer.go:204 +0xa4
crypto/tls.(*Conn).readFromUntil(0x2b0e200, 0xa305ac, 0x2b603b0, 0x5, 0x2b603b0, 0x11)
        /usr/local/go/src/crypto/tls/conn.go:798 +0xc4
crypto/tls.(*Conn).readRecordOrCCS(0x2b0e200, 0x0, 0x0, 0x10601)
        /usr/local/go/src/crypto/tls/conn.go:605 +0xfc
crypto/tls.(*Conn).readRecord(...)
        /usr/local/go/src/crypto/tls/conn.go:573
crypto/tls.(*Conn).Read(0x2b0e200, 0x2b94000, 0x8000, 0x8000, 0x0, 0x0, 0x0)
        /usr/local/go/src/crypto/tls/conn.go:1276 +0x154
bufio.(*Reader).Read(0x2b92000, 0x2b068a0, 0x9, 0x9, 0x0, 0x811080a3, 0x121e4)
        /usr/local/go/src/bufio/bufio.go:227 +0x22c
io.ReadAtLeast(0xa2f0e4, 0x2b92000, 0x2b068a0, 0x9, 0x9, 0x9, 0x562430, 0x2b62974, 0x0)
        /usr/local/go/src/io/io.go:328 +0x6c
io.ReadFull(...)
        /usr/local/go/src/io/io.go:347
golang.org/x/net/http2.readFrameHeader(0x2b068a0, 0x9, 0x9, 0xa2f0e4, 0x2b92000, 0x0, 0x0, 0x0, 0x3925320b, 0x3fa21e30)
        /home/pi/sensorsys/vendor/golang.org/x/net/http2/frame.go:237 +0x54
golang.org/x/net/http2.(*Framer).ReadFrame(0x2b06880, 0x2b5c6a8, 0x2b5c6a8, 0x0, 0x0)
        /home/pi/sensorsys/vendor/golang.org/x/net/http2/frame.go:492 +0x74
google.golang.org/grpc/internal/transport.(*http2Client).reader(0x28a06c0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:1273 +0x10c
created by google.golang.org/grpc/internal/transport.newHTTP2Client
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:300 +0x9ac

goroutine 92 [semacquire]:
sync.runtime_Semacquire(0x2bb80e8)
        /usr/local/go/src/runtime/sema.go:56 +0x34
sync.(*WaitGroup).Wait(0x2bb80e0)
        /usr/local/go/src/sync/waitgroup.go:130 +0x84
github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C(0x2b5efe0, 0xc, 0x10, 0x979660, 0xa2f2c4)
        /home/pi/sensorsys/drivers/periphery/detect.go:68 +0x1bc
github.com/timoth-y/chainmetric-sensorsys/drivers/device.(*Device).handleHotswap(0x28de040, 0xc01d9bae, 0x75ee774f)
        /home/pi/sensorsys/drivers/device/hotswap.go:58 +0x74
github.com/timoth-y/chainmetric-sensorsys/drivers/device.(*Device).initHotswap.func1.1(0x2b45560, 0x28de040, 0xb2d05e00, 0x0)
        /home/pi/sensorsys/drivers/device/hotswap.go:35 +0x3c
created by github.com/timoth-y/chainmetric-sensorsys/drivers/device.(*Device).initHotswap.func1
        /home/pi/sensorsys/drivers/device/hotswap.go:31 +0x84

goroutine 88 [select]:
google.golang.org/grpc/internal/transport.(*controlBuffer).get(0x2b92060, 0x1, 0x0, 0x0, 0x0, 0x0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/controlbuf.go:395 +0xc0
google.golang.org/grpc/internal/transport.(*loopyWriter).run(0x2b92090, 0x0, 0x0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/controlbuf.go:513 +0x1bc
google.golang.org/grpc/internal/transport.newHTTP2Client.func3(0x28a06c0)
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:346 +0x5c
created by google.golang.org/grpc/internal/transport.newHTTP2Client
        /home/pi/sensorsys/vendor/google.golang.org/grpc/internal/transport/http2_client.go:344 +0xb9c

goroutine 94 [runnable]:
github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C.func1(0x2bb80e0, 0x2b5ad80, 0x2b5efe0, 0xc, 0x10, 0x979660, 0xa3a5dc, 0x29faa40, 0x2b5ae80)
        /home/pi/sensorsys/drivers/periphery/detect.go:38
created by github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C
        /home/pi/sensorsys/drivers/periphery/detect.go:38 +0x19c

goroutine 95 [runnable]:
github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C.func1(0x2bb80e0, 0x2b5ad80, 0x2b5efe0, 0xc, 0x10, 0x979660, 0xa3a5dc, 0x29faac0, 0x2b5aea0)
        /home/pi/sensorsys/drivers/periphery/detect.go:38
created by github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C
        /home/pi/sensorsys/drivers/periphery/detect.go:38 +0x19c

goroutine 96 [runnable]:
github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C.func1(0x2bb80e0, 0x2b5ad80, 0x2b5efe0, 0xc, 0x10, 0x979660, 0xa3a5dc, 0x29fab40, 0x2b5aec0)
        /home/pi/sensorsys/drivers/periphery/detect.go:47 +0xc8
created by github.com/timoth-y/chainmetric-sensorsys/drivers/periphery.ScanI2C
        /home/pi/sensorsys/drivers/periphery/detect.go:38 +0x19c
make: *** [Makefile:24: run] Error 2

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