hyperledger tutorial

Note: This article was first published on 2017-09-22. Hyperledger source code Analysis of Fabric introduction The Chaincode is the user chaincode,ucc, which is important for application developers, and it provides state processing logic based on the blockchain distributed ledger, which can be used to develop a variety of complex applications. Hyperledger Fabric, Chaincode runs in the Docker container by d

Brief introduction Current host information: Ubuntu16.04x86_64 root@JDu4e00u53f7:~# uname -aLinux JDu4e00u53f7 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux The environments we need to prepare are: CURL Docker Compose Docker Golang Nodejs Installation Installing Curl sudo apt-get install curl //Ubuntu系统一般默认会安装 Installing Docker Hypreledger Fabric1.2 requires Docker to have a minimum version ofDocker 17.06.2

current fabric there is limited development resources, so in 1.0 will not do, may be achieved in the future. COUCHDB Installation Now let's talk about this couchdb. COUCHDB is a database of key values for a full local restful API, which means we don't need any clients, we just need to operate the database via HTTP requests. Leveldb is a peer local database, then certainly and peer one-to-one relationship, then COUCHDB is a network database, should and peer what kind of relationship. In a produc

Hyperledger source code Analysis of Fabric The sorting service plays a very central role in the Super Ledger Fabric network. All transactions need to be sorted globally before they are sent to committer for validation acceptance. In the current architecture, the function of the sorting service is extracted, as a separate Fabric-orderer module to implement, the code is mainly in the Fabric/orderer directory. The following Kafka as a consensus plug-in a

Hyperledger source code Analysis of Fabric The Orderer node startup is implemented by the main () method under the Orderer package and further calls to the main () method in the Orderer/common/server package. The core code is shown below. Main is the entry point of Orderer Processfunc main () { fullcmd: = Kingpin. Mustparse (app. Parse (OS. Args[1:]) //"version" command if Fullcmd = = version. Fullcommand () { fmt. Println (metada

Hyperledger Installation and testing (MAC PRO) Environment preparation Dccker Golang node. js Python 2.7 (MacOS comes with) Fabric Download and Installation Reference Links:Hyperledger Fabric v1.1.0 MacOS Deploying a developer environment and creating the first Fabric network Test Note that the actual installation is using the 1.2 version, the corresponding test should also refer to:Building Your First Network Some of the issues that

Hyperledger source code Analysis of Fabric Deliver means that the client obtains data from the ordering service via the Grpc interface (for example, data from a specified block). The Orderer node receives the request message, which is first given to the Deliver of the server structure in the Orderer.common.server package (SRV ab. Atomicbroadcast_deliverserver) Error method processing. This method further invokes the Handle of the deliverserver structu

Hyperledger source code Analysis of Fabric Broadcast means that the client sends the request message (for example, after the endorsement transaction is completed) to the ordering service via the Grpc interface. These request messages are given to the broadcast (SRV ab) of the server structure in the Orderer.common.server package. Atomicbroadcast_broadcastserver) Error method processing. This method will mainly call the Handle (SRV ab) of the HANDLERIM

The entities involved in Hyperledger Fabric 1.0 include the following: FABRIC-CA: Mainly responsible for the maintenance of the certificate of the entity in the network; Peer: mainly responsible for the implementation of intelligent contracts, record books; Order: mainly responsible for the accounting content of the consensus. 1.0 architecture can be based on the actual needs of the network through the Certificate of Security Domain Division manag

Fabric-sdk-java build and compile (this article is based on 1.0.1 version) 1, install jdk1.8 and above version 2, download Fabric-sdk-java GitHub address: Https://github.com/hyperledger/fabric-sdk-java 3. Import into Eclipse tools 4, switch to the project directory under the Command Window mode of execution: MVN compile-dskiptests, Refresh the project after the compilation succeeds. Proto files in the project are generated into the Target/genera

Copyright Notice: Blog Article copyright owners all, without authorization, prohibit reprint, reprint please specify the source installation Environment installation JDK Download URL: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Download jdk-8u151-macosx-x64.dmg install to PC install maven Download URL: https://maven.apache.org/download.cgi Extract to/users/fujinliang/documents/environment Open terminal , modify. BASHRC VI ~/.BASHRC Add the following code

The previous analysis program looked at the details of the analysis, so without the concept of framework, took two days to analyze the Hyperledger fabric architecture design, analysis of the program does not reference any information, such as error welcome correction, common progress. The author has the following questions before the detailed analysis procedure: 1) How the CLI (command line) client sends a command to a peer node 2) How the peer node

This is a created article in which the information may have evolved or changed. 1. Environmental architecture The system uses the container to run, the construction process is simple, each component division of labor is clear:

Then the above figure analysis, after the consensus commit process to generate batch data, is how to send to Chaincode. We still analyze it with the Invoke command. 1 call Chaincode's executetransactions into the transaction process in consensus

first, fabric network structure (temporarily excluding CA) As shown in the figure above, in the Fabric network, o indicates that ORDERER,P represents PEER,EP representative endorsing Peer (endorser), CC represents Chaincode, and client, Channel,

Transaction FlowThis document outlines the trading mechanisms that occur during the exchange of standard assets. The program includes two Clienta and B, they buy and sell radishes. They have a peer on the web, sending their deals through peer and

Vocabulary Induction 1. peer--node name role meaning function Description Orderer 1.0 Consensus service roles in the architecture Sort nodes 1. Sort all transactions destined for the network2. Organize

Configtxgen main Functions 1. Generate the creation block needed to start orderer, and support checking the chunk content 2, generate the configuration transaction needed to create the application channel, and support checking the transaction

Transferred from: http://blog.csdn.net/bluecloudmatrix/article/details/51859333 Fabric originated from IBM, the original intention in order to serve industrial production, IBM will open 44,000 lines of code, is a great contribution, so that we can

The 1.Chaincode interface must be implemented by all the code on the chain, and the fabric runs the transaction by invoking these specified functions Call the INIT function to allow code on the chain to initialize internal data after the container