Hands-On Blockchain with Hyperledger : Building Decentralized Applications with Hyperledger Fabric and Composer.

Cover -- Title Page -- Copyright and Credits -- Packt Upsell -- Foreword -- Contributors -- Table of Contents -- Preface -- Chapter 1: Blockchain - Enterprise and Industry Perspective -- Defining the terms - what is a blockchain? -- Four core building blocks of blockchain framworks -- Additional capabilities to consider -- Fundamentals of the secure transaction processing protocol -- Where blockchain technology has been and where it's going -- The great divide -- An economic model for blockchain delivery -- Learning as we go -- The promise of trust and accountability -- Industries putting blockchain technology to work -- Blockchain in the enterprise -- What applications are a good fit? -- How does the enterprise view blockchain? -- Litmus testing to justify the application of blockchain technology -- Integrating a blockchain infrastructure for the whole enterprise -- Enterprise design principles -- Business drivers and evolution -- Ensuring sustainability -- The principles that drive blockchain adoption -- Business considerations for choosing a blockchain framework -- Technology considerations for choosing a blockchain framework -- Identity management -- Scalability -- Enterprise security -- Development tooling -- Crypto-economic models -- Decentralization with systemic governance -- Enterprise support -- Use case-driven pluggability choices -- Shared ledger technology -- Consensus -- Crypto algorithms and encryption technology -- Use case-driven pluggable choices -- Enterprise integration and designing for extensibility -- Other considerations -- Consensus, ACID property, and CAP -- CAP -- ACID -- Attestation - SSCs are signed and encrypted -- Use of HSMs -- Summary -- Chapter 2: Exploring Hyperledger Fabric -- Building on the foundations of open computing -- Fundamentals of the Hyperledger project -- The Linux Foundation -- Hyperledger.

Open source and open standards -- Hyperledger frameworks, tools, and building blocks -- Hyperledger frameworks -- Hyperledger tools -- The building blocks of blockchain solutions -- Hyperledger Fabric component design -- Principles of Hyperledger design -- CAP Theorem -- Hyperledger Fabric reference architecture -- Hyperledger Fabric runtime architecture -- Strengths and advantages of componentized design -- Hyperledger Fabric - the journey of a sample transaction -- Hyperledger Fabric explored -- Components in a blockchain network -- Developer interaction -- Understanding governance in business networks powered by blockchain -- Governance structure and landscape -- Information technology governance -- Blockchain network governance -- Business network governance -- Summary -- Chapter 3: Setting the Stage with a Business Scenario -- Trading and letter of credit -- The importance of trust in facilitating trade -- The letter of credit process today -- Business scenario and use case -- Overview -- Real-world processes -- Simplified and modified processes -- Terms used in trade finance and logistics -- Shared process workflow -- Shared assets and data -- Participants' roles and capabilities -- Benefits of blockchain applications over current real-world processes -- Setting up the development environment -- Designing a network -- Installing prerequisites -- Forking and cloning the trade-finance-logistics repository -- Creating and running a network configuration -- Preparing the network -- Generating network cryptographic material -- Generating channel artifacts -- Generating the configuration in one operation -- Composing a sample trade network -- Network components' configuration files -- Launching a sample trade network -- Summary -- Chapter 4: Designing a Data and Transaction Model with Golang -- Starting the chaincode development.

Compiling and running chaincode -- Installing and instantiating chaincode -- Invoking chaincode -- Creating a chaincode -- The chaincode interface -- Setting up the chaincode file -- The Invoke method -- Access control -- ABAC -- Registering a user -- Enrolling a user -- Retrieving user identities and attributes in chaincode -- Implementing chaincode functions -- Defining chaincode assets -- Coding chaincode functions -- Creating an asset -- Reading and modifying an asset -- Main function -- Testing chaincode -- SHIM mocking -- Testing the Init method -- Testing the Invoke method -- Running tests -- Chaincode design topics -- Composite keys -- Range queries -- State queries and CouchDB -- Indexes -- ReadSet and WriteSet -- Multiversion concurrency control -- Logging output -- Configuration -- Logging API -- SHIM logging levels -- Stdout and stderr -- Additional SHIM API functions -- Summary -- Chapter 5: Exposing Network Assets and Transactions -- Building a complete application -- The nature of a Hyperledger Fabric application -- Application and transaction stages -- Application model and architecture -- Building the application -- Middleware - wrapping and driving the chaincode -- Installation of tools and dependencies -- Prerequisites for creating and running the middleware -- Installation of dependencies -- Creating and running the middleware -- Network configuration -- Endorsement policy -- User records -- Client registration and enrollment -- Creating a channel -- Joining a channel -- Installation of chaincode -- Instantiation of chaincode -- Invoking the chaincode -- Querying the chaincode -- Completing the loop - subscribing to blockchain events -- Putting it all together -- User application - exporting the service and API -- Applications -- User and session management -- Designing an API -- Creating and launching a service.

User and session management -- Network administration -- Exercising the application -- User/client interaction modes -- Testing the Middleware and Application -- Integration with existing systems and processes -- Design considerations -- Decentralization -- Process alignment -- Message affinity -- Service discovery -- Identity mapping -- Integration design pattern -- Enterprise system integration -- Integrating with an existing system of record -- Integrating with an operational data store -- Microservice and event-driven architecture -- Considering reliability, availability, and serviceability -- Reliability -- Availability -- Serviceability -- Summary -- Chapter 6: Business Networks -- A busy world of purposeful activity -- Why a language for business networks? -- Defining business networks -- A deeper idea -- Introducing participants -- Types of participant -- Individual participants -- Organizational participants -- System or device participants -- Participants are agents -- Participants and identity -- Introducing assets -- Assets flow between participants -- Tangible and intangible assets -- The structure of assets -- Ownership is a special relationship -- Asset life cycles -- Describing asset's life cycles in detail with transactions -- Introducing transactions -- Change as a fundamental concept -- Transaction definition and instance -- Implicit and explicit transactions -- The importance of contracts -- Signatures -- Smart contracts for multi-party transaction processing -- Digital transaction processing -- Initiating transactions -- Transaction history -- Transaction streams -- Separating transactions into different business networks -- Transaction history and asset states -- A business network as a history of transactions -- Regulators and business networks.

Discussing events from the perspective of designing a business network using Composer -- A universal concept -- Messages carry event notifications -- An example to illustrate event structure -- Events and transactions -- External versus explicit events -- Events cause participants to act -- Loosely coupled design -- The utility of events -- Implementing a business network -- The importance of de-materialization -- Blockchain benefits for B2B and EDI -- Participants that interact with the blockchain -- Accessing the business network with APIs -- A 3-tier systems architecture -- Hyperledger Fabric and Hyperledger Composer -- Summary -- Chapter 7: A Business Network Example -- The letter of credit sample -- Installing the sample -- Running the sample -- Step 1 - preparing to request a letter of credit -- Step 2 - requesting a letter of credit -- Step 3 - importing bank approval -- Step 4 - exporting bank approval -- Step 5 - letter received by exporter -- Step 6 - shipment -- Step 7 - goods received -- Step 8 - payment -- Step 9 - closing the letter -- Step 10 - Bob receives payment -- Recapping the process -- Analyzing the letter of credit process -- The Playground -- Viewing the business network -- A description of the business network -- The participant descriptions -- The asset descriptions -- The transaction descriptions -- The event descriptions -- A model of the business network -- Namespaces -- Enumerations -- Asset definitions -- Participant definitions -- Concept definitions -- Transaction definitions -- Event definitions -- Examining the live network -- Examining a letter of credit instance -- Examining participant instances -- Examining transaction instances -- Submitting a new transaction to the network -- Understanding how transactions are implemented -- Creating business network APIs -- SWAGGER API definitions.

Querying the network using SWAGGER.

With concrete exercises and examples this book will help you to understand how to deploy a Hyperledger Fabric network. It then proceeds to explain the steps in developing a full fledged decentralized application. You will not only learn how to plan, design and create private networks but also evolve the network as per organizational needs.

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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2024. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.