hyperledger tutorial

1, Environmental structure Description:The system uses the container to run, the construction process is simple, each component division of labor is clear:1.docker-compose:docker container management;2.Go Lang Sdk:go language development, compilation environment;3.git:git Mirror Clone and commit;4.Rest client:rest API test;The main operations of the container are: Membersrv and peer; 2. Deployment Environment Readiness 3. Installation and Deployment3.1 Pulling the mirror from the DockerhubA. Ins

First, the Fabric SDK The latest official document for Hyperledger fabric (V1.1.0-preview), the description of the Fabric SDK is still poor, just a few simple descriptions, plus two GitHub links: Fabric-sdk-node Fabric-sdk-java In fact, through the Hyperledger project on GitHub we can see that Hyperledger fabric also offers another three kinds of sdk:fabric-sdk-

=/opt/gopath Then Soorce source/etc/profile. Attention If the mirror is slow, set up with Daocloud to download curl-ssl https://get.daocloud.io/daotools/set_mirror.sh | sh-s/HTTP/ 6b8ef0e5.m.daocloud.io Service Docker restart if the download process encounters protoc-gen-go missing, download and copy to the corresponding directory go get-u Github.com/golang/protobuf/protoc-gen-go 4 Fabric Mirroring Install the fabric image (there are 2 methods, the 1th is to download the source code

Hyperledger Fabric Trading Flow Hyperledger Fabric v1.1 provides several special chain codes to perform certain special tasks, which are known as system chain codes (Systems Chaincode). The purpose of this paper is to summarize the implementation, function and usage of these chain codes. Similar to the user chain code, the system chain code also implements the Init () and Invoke () methods. There are five t

Prerequisite conditions CentOS 7.4 64-bit Install Docker and configure the Aliyun accelerator Install Docker Compose Install Golang Because of the forbidden relationship, there is no way to direct access to the golang.org site, but the domestic download site a lot of their own Baidu can be. My installation path is/usr/local/src/go Edit/etc/profile file Add related environment variables as follows Install Git Yum Install git Download Fabric Source Code Mkdir-p ~/go/src/github.com/

> Before learning bitcoin and Ethereum, must first learn its block structure, at that time in the bank to do hyperledger related projects, I was very neglected in the structure, only care about the smart contract, incredibly can also initially master and start Project-related development. This shows that the super-Ledger block attribute is actually weaker, and it is important that the properties of the smart contract. Performance is also good. In this

First, start the process of developing code on the Java chain 1. Make sure you have grandle tools.2. Download the binary distribution package from the http://gradle.org/gradle-download/3. Unpack, move to the location you want, add the Grandle Bin directory to the system path4. Ensure that the GRANDLE-V command can be executed, the version shown is 2.12 or higher5. Ensure Grandle daemon can be quickly created6. Make sure you've turned jdk8.0 and also make sure that the Java directory is in your p

problems of the project, specific instructions can refer to/usr/lib/python2.7/site.py file: Docker-compose-f Docker-compose-cli.yaml Down Execute command Docker run-it CLI BashAbnormal: [ROOT@IZ2ZEIVRKCKULQ2DTIDZTMZ e2e_cli]# Docker exec-it CLI bash Error response from Daemon:container 1f9b6f7d709f26 3F4A67A67AD91B419B13844EFAAA4CAEB6DD571BFA829822C7 is not running Workaround: CLI: container_name:cli ... Working_dir:/opt/gopath/src/github.com/

How to contribute code to the Hyperledger Fabric project Installation Environment It is recommended to develop the code in the Ubuntu 14.04+ environment and install the following tools. git: Used to get the code; Golang 1.6+: Environment variables such as configuration $GOPATH after successful installation. Get Code First register the Linux Foundation ID and log in to https://gerrit.hyperledger.org/to add a personal SSH pub key. Look at the list of

What has been harvested and what has been done is an important issue.This article is only to learn to exchange information, personal summary. A brief analysis of Hyperledger fabric PBFT algorithm Architecture Fabric Consensus algorithm code is all in the Consensus folder, consensus folder is mainly divided into Controller,executor,helper,noops,pbft,util file module.Among them, consensus.go mainly contains the internal interface of the algorithm plug-i

[translation]next-ledger-architecture-proposal Original: Https://github.com/hyperledger/fabric/blob/master/proposals/r1/Next-Ledger-Architecture-Proposal.md Translation: Sycamore Tree Draft / in progress This document is a proposal for a future ledger architecture based on community feedback. All inputs are the goal of community efforts. Catalogue ObjectiveApiPoint-in-time queryQuery Language Purpose The motivation for exploring the new ledger archit

Have the version number of the strict as required, encountered a lot of pits1) No requirement to install Git version2) Install the Go 1.9 configuration environment variable3) Install Vagrant 1.9.44) Install VirtualBox 5.1.285) Create the following directory under the Go installation directory/src/(no restrictions on location)D:\Go\src\github.com\hyperledger6) Use Git to draw official source codegit clone https://github.com/hyperledger/fabric.git7) Ope

Then the previous article also recorded the fabric1.0 test process has been in accordance with the "Blockchain Technology Guide" operation, the background log in the start of the output of the following error message The background error of the cluster will cause the command error, guess the reason is that there is a dependency between the containers, Orderer 7050 has not been opened, Peer0 Grpc failed. Purely personal guess, because the following error is also shown because GRPC timed out The

As we all know, the database used by Hyperledger is ROCKSDB, and if you do not modify it, the data will be stored in the/var/hyperledger/production/db directory. Now let's analyze the relevant code in the gray section of the diagram. The code structure diagram is as follows Start the database, initialize the OPENCHAINDB instance, and open the database. Note that this method does not guarantee the correct

Have a public network environment of the server can directly see Hyperledger Fabric 1.0 from scratch (ii)--Environmental Construction (public network), this article similar to the previous article, but the environment needs to build in the intranet, that is, the network is limited under the circumstances. 1: Environmental construction and testing The host environment used in this article is CentOS, the version is centos.x86_647.2, runs the fabric nod

This article address: original link Share your experience on Hyperledger smart contracts. Source Address: Chaincode_example2 In the previous setfabriconubuntu, there was no need for virtualbox and vagrant to deploy the fabric directly, and its usefulness now manifests itself ~ The operation of the smart contract Chaincode does not require multiple nodes to be started locally and can be tested directly. Then we can test the existing CHAINCODE_EXAMPLE0

Installing Curl (Install curl) If you do not have curl installed, download and install it. Note: If it is windows, please look at the following Windows extras; Docker and Docker Compose Below you talk about installing Docker and Docker compose. MAXOSX, *nix, or Windows 10 requires the installation of Docker V1.12 or a later version. Older versions of Windows need to be installed first: Docker Toolbox before installing Docker V1.12 or later. You can view your Docker version by entering the fol

) handler, err: = P.handlerfact Ory (P, stream, Initiatedstream, nil) if err! = Nil { return FMT. Errorf ("Error creating handler during Handlechat Initiation:%s", err) } defer handler. Stop () for { in, err: = stream. RECV () If err = = Io. EOF { peerlogger.debug ("Received eof, ending Chat") return nil } if err! = Nil { e: = fmt. Errorf ("Error during Chat, stopping handler:%s", err) Peerlogger.error (E.error ()) return e } err = handler. Handlemessage (in)

("Creating consensus plugin%s", plugin) Return PBFT. Getplugin (Stack) } Logger. Info ("Creating default consensus plugin (noops)") Return Noops. Getnoops (Stack) } The controller directory is a function of the consensus plug-in selection moduleThe---->hyperledger provides two algorithms pbft and Noops----> Default single node Usage noops is equivalent to no consensus algorithm Func newconsenter (Stack consensus. Stack) consensus. Consenter

If the currency block chain technology represented by the Bitcoin is 1.0, and the contract block chain technology represented by the Ether Square is 2.0, then the Hyperledger project which realizes the complete permission control and the security guarantee will undoubtedly represent the arrival of the block Chain Technology 3.0 ERA. The Hyperledger project currently consists of fabric, sawtooth lake,iroha,