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Change Log

Version 2.0.0 (2015-10-23)

Wire 2 is a backwards-incompatible release. It makes breaking changes to the compiler, runtime, extensions, and generated code. These changes aren’t made lightly as we’ve endured the upgrade in our own projects! We believe the cost of migration is worth the benefits.

We’ve created the wire-schema library that models .proto schema definitions. This is a capable library that packs several neat features. You can load a Schema from .proto files located on the local file system, a ZIP or JAR file, or any java.nio.FileSystem like Jimfs. You can prune this schema with includes or excludes, allowing you to reuse .proto definitions with minimal code. And you can decode data directly from a schema: no code generation is necessary!

We’ve flattened extensions. Wire 2.0 combines the fields defined directly on messages with fields defined far away in extensions. In the generated code, extension fields look just like every other field! One limitation of this approach is that it’s no longer possible to compile extensions separately from the messages they extend. For this reason we now recommend always generating all Wire code in a single step.

We’ve rearranged the runtime. Types related to the protocol buffers format are now prefixed Proto and types related to our implementation are prefixed Wire. To encode and decode messages you must first get an adapter either from the ADAPTER constant or from ProtoAdapter.get(). You no longer need a Wire instance!

Runtime Changes

  • New ADAPTER constant on most messages gives access to encode & decode values. This replaces the encoding and decoding methods on Wire.
  • Guard against null lists. Code that passes null to builder methods expecting a List used to accept that; now Wire throws a NullPointerException. Similarly list elements must also be non-null.
  • New Message.newBuilder() API. This replaces the previous copy constructor on Builder.
  • Fix: Always throw ProtocolException when there are decoding problems.
  • Fix: Stricter checking for oneof fields. Previously it was possible to create instances with multiple values set!
  • Fix: Improve redacting of repeated fields.
  • Fix: ProtoReader now silently unpacks packed values.
  • Fix: ProtoReader doesn’t return groups to callers.
  • New: Message.withoutUnknownFields() strips unknown fields.

Schema & Java Generator

  • The Java generator is now standalone. Use these APIs programmatically to build plugins without delegating to the command line interface.
  • New: Prune schemas using includes and excludes. The IdentifierSet can be used to configure which types and members are retained and which are pruned.
  • New: Encode and decode values directly from the schema.
  • New: Improved error messages for validation.
  • Fix: Strict imports.
  • Fix: Detect and forbid conflicts on extension tags.

Compiler

  • New: Always use Wire’s bundled descriptor.proto. Previously to define custom options you needed to import a potentially-inconsistent descriptor.
  • New: Emit all types when no .proto files are explicitly specified.
  • New: Generate code for encoding and decoding messages. The previous, reflection-based encoder and decoder are accessible with --compact.
  • New: ServiceFactory has been removed. To generate code for your services, load a schema with wire-schema and then use a library like JavaPoet to generate your own code. The JavaGenerator class can be used to look up Java names of message types.
  • New: Compiler will load all .proto files if none are explicitly specified.
  • New: Load .proto files from ZIP and JAR files.
  • New: The --android flag causes Wire messages to implement Parcelable.
  • New: Support multiple --proto_path arguments

Extensions

  • Extensions have been flattened.
  • Fix: Better field resolution for options.
  • Fix: Extension fields may not be required.

Version 1.8.0 (2015-06-27)

  • New: oneof support!
  • Fix: Correct serialization of repeated unknown fields.
  • Fix: Removed superfluous private modifier on enum constructor.
  • Warning: The 'protoparser' library was updated to version 4.0. This changes the type passed to any ServiceWriter implementations.

Version 1.7.0 (2015-03-05)

  • New: Messages implement Serializable. The serialized form follows protobuf encoding, so renaming fields is safe as long as tags are consistent. (Renaming classes is unsafe, however). Note that extension fields are deserialized as unknown fields.

Version 1.6.1 (2015-01-16)

  • New: --quiet and --dry-run command-line arguments.
  • Fix: Handle an extension registry with zero or only one item.
  • Okio dependency bumped to 1.2.0.

Version 1.6.0 (2014-10-23)

  • Fix: Correctly throw IOException when parsing bad input fails.
  • Fix: Ensure emitted code references to Arrays.asList correctly compiles in some edge cases.
  • 'UNDEFINED' enum value has been removed.

Version 1.5.2 (2014-09-15)

  • New: 'UNDEFINED' enum value represents values that the generated code is unable to handle.
  • New: Service writer implementation can now be specified on the command-line.

Version 1.5.1 (2014-06-18)

  • New: Generate interface definition for a Service with a partial list of methods.
  • Okio dependency bumped to 1.0.0.

Version 1.5.0 (2014-04-22)

  • New: Options on enums and enum values are now supported.
  • New: Options ending with .redacted on fields will omit values from toString.
  • New: Redactor creates copies of messages with redacted fields omitted.
  • Various internal serialization improvements and memory reduction.
  • Okio dependency bumped to 0.9.0.

Version 1.4.0 (2014-04-22)

  • Replace Wire's ByteString class with the one from Okio (https://github.com/square/okio). This is a breaking API change.

  • Add a new static method Wire.parseFrom(okio.Source input, Class<M> messageClass).

  • Reimplement Wire's input handling to use Okio internally.

  • Provide basic support for generating code from service declarations (see README.md).

  • Improve deserialization performance.

  • Fix a bug where no some extension dependencies were not detected.

Version 1.3.3 (2014-03-28)

  • New: Support service declarations as roots. The request and response types of their methods will be included.

Version 1.3.2 (2014-03-27)

  • Fix: Enum value duplicate check now correctly looks at names instead of values.

Version 1.3.1 (2014-03-25)

  • New: Automatically add Maven plugin's generated source as a compilation root.
  • Fix: Correct Maven plugin's 'no arguments' flag to work properly.
  • Fix: Support extend declarations nested inside message types.

Version 1.3.0 (2014-03-21)

  • New: Empty repeated fields are now initialized to an empty collection.
  • New: Emit field options. Use --no_options flag to disable.
  • New: @Deprecated is now added to fields and setters on the builder.
  • New: Maven plugin for running the compiler as part of a build.
  • Fix: Treat empty and null repeated fields the same in equals() and hashCode().

Note: This version is not backwards compatible with code generated from previous versions.

Version 1.2.0 (2013-11-01)

  • New: --registry_class compiler argument emits a class with a list of extensions suitable for passing to the Wire constructor.
  • Fix: Ensure all trailing whitespace is trimmed on documentation.

Version 1.1.1 (2013-10-23)

  • Fix: Correct parsing and emission of multi-line documentation.

Version 1.1.0 (2013-10-22)

  • New: Support for message options.
  • New: Check for duplicate field tag numbers.
  • New: Emit Javadoc on messages, enum values, and builder methods.
  • Fix: Emit imports for extension fields and classes outside of package.
  • Fix: Correctly generate sources for protos with the same basename.
  • Fix: Do not generate default constants for message types.
  • Fix: Avoid shadowing fields named "result", "other", or "o".

Version 1.0.1 (2013-08-27)

  • New: Support reading directly from InputStream.
  • New: Add 'other == this' shortcut in generated equals() methods.

Version 1.0.0 (2013-08-23)

Initial version.