Exonum Java Binding 0.9.0-rc1

Overview

The main feature of this release is support for dynamic services. Dynamic services can be added
to the blockchain network after it has been started. Since this release EJB also supports multiple
instances of the same service.
Creating proofs is not supported in this release. They will be re-enabled in one of the following
releases.

This release is based on Exonum 0.13.0-rc.2.

If you are upgrading an existing Java service, consult the migration guide.

Added

• Dynamic services support. (#1065, #1145, #1183)
• Exonum protobuf messages to common module. (#1085)
• Service#beforeCommit handler. (#1132)
• TestKit support for dynamic services. (#1145)
• Support for flat list proofs, the new compact proof format for ProofList. Not introduced to
  ProofListIndexProxy for now. (#1156)
• Java runtime plugin for exonum-launcher. (#1171)
• serviceName and serviceId were added to TransactionContext. They are used for creating
  schemas with unique namespaces. (#1181)
• Implement run-dev command support for running the node in development mode. (#1217)
• Configurable interface corresponding to exonum.Configure. (#1234)
• ProofMapIndexProxy#truncate and #removeLast. (#1272)
• Java 13 support.

Changed

• Support for the new protobuf-based TransactionMessage format is provided. (#1085)
• TimeSchema supports multiple time service instances. (#1136)
• TransactionResult is replaced with ExecutionStatus. (#1174)
• MapProof enforces 32-byte long hash codes. (#1191)
• The default ProofMapIndexProxy implementation has been changed to hash user keys to produce an
  internal key. The implementation that does not hash the keys is still supported, see
  documentation. (#1222)
• Updated Exonum to 0.13.0-rc.2 — see Exonum release page
  for details.

Removed

• Service#getId and Service#getName are removed. AbstractService now provides
  similar methods that can be used as replacements. (#1065)
• Blockchain#getActualConfiguration has been replaced with
  Blockchain#getConsensusConfiguration, returning only the consensus configuration (now also
  containing the validator public keys) as a Protobuf message. (#1185)
• Transaction#info method is removed as it is no longer used by the framework. (#1225)
• ProofMapIndexProxy#getProof and ProofListIndexProxy#getProof are disabled in this release.

Known Issues

• exonum-java-app module, required by testkit, is not deployed to Maven Central.
  That is resolved in master and ejb/v0.9.0-rc2 and will be released soon as "0.9.0-rc2" (#1297)