Suppose you have two .proto files, an options.proto where the extension is defined, and a foo.proto where the custom option is used.
If both proto files are actually part of your protoc plugin (i.e., your plugin includes the generated Java class of both .proto files), you should be able to access the option values in foo.proto without problem. If options.proto is part of your protoc plugin, and foo.proto is the proto file that's being compiled by protoc + your plugin, you need to provide an ExtensionRegistry when parsing the CodeGeneratorRequest message. After that custom options included in the ExtensionRegistry should be accessible. On Fri, Sep 1, 2017 at 5:34 PM, Noel Yap <[email protected]> wrote: > Hmm, I'm wondering if that starting block never actually executes. > > On Fri, Sep 1, 2017, 17:05 Noel Yap <[email protected]> wrote: > >> I'm seeing the generated code having in a `static` init block: >> ``` >> com.google.protobuf.Descriptors.FileDescriptor >> .internalBuildGeneratedFileFrom(descriptorData, >> new com.google.protobuf.Descriptors.FileDescriptor[] { >> com.example.proto.options.api_docs.ApiDocsOptionsProto. >> getDescriptor(), >> com.example.proto.options.ServerOptionsProto.getDescriptor(), >> }, assigner); >> com.google.protobuf.ExtensionRegistry registry = >> com.google.protobuf.ExtensionRegistry.newInstance(); >> registry.add(com.example.proto.options.ServerOptionsProto.server); >> com.google.protobuf.Descriptors.FileDescriptor >> .internalUpdateFileDescriptor(descriptor, registry); >> com.example.proto.options.api_docs.ApiDocsOptionsProto. >> getDescriptor(); >> com.example.proto.options.ServerOptionsProto.getDescriptor(); >> ``` >> >> On Fri, Sep 1, 2017 at 4:54 PM Adam Cozzette <[email protected]> >> wrote: >> >>> You may also need to provide an ExtensionRegistry as described here >>> <https://developers.google.com/protocol-buffers/docs/reference/java-generated#extension> >>> when you parse the proto, in order for the extension to be visible. >>> >>> On Fri, Sep 1, 2017 at 3:55 PM, Noel Yap <[email protected]> wrote: >>> >>>> One piece of possibly important information. The code being written is >>>> for a `protoc` plugin. I've updated the Stackoverflow question to state >>>> that. >>>> >>>> On Fri, Sep 1, 2017 at 3:42 PM Noel Yap <[email protected]> wrote: >>>> >>>>> proto.getDescriptor().getFile().getOptions() didn't work. If I print >>>>> that out, I see: >>>>> >>>>> java_package: \"com.google.protobuf\"\njava_outer_classname: >>>>> \"DescriptorProtos\"\noptimize_for: SPEED\ngo_package: \" >>>>> github.com/golang/protobuf/protoc-gen-go/descriptor;descriptor\ >>>>> <http://github.com/golang/protobuf/protoc-gen-go/descriptor;descriptor%5C> >>>>> "\nobjc_class_prefix: \"GPB\"\ncsharp_namespace: >>>>> \"Google.Protobuf.Reflection\" >>>>> >>>>> I've also tried `proto.getOptions()`. That shows the options like >>>>> `java_package` but `hasExtension` for the extension I'm setting is still >>>>> returning `false`. >>>>> >>>>> On Fri, Sep 1, 2017 at 2:53 PM Adam Cozzette <[email protected]> >>>>> wrote: >>>>> >>>>>> I posted an answer on your StackOverflow post but let me know if you >>>>>> still have any trouble with that. >>>>>> >>>>>> On Wed, Aug 30, 2017 at 4:13 PM, Noel Yap <[email protected]> wrote: >>>>>> >>>>>>> https://stackoverflow.com/questions/45970986/how-to-get- >>>>>>> value-of-protobuf-custom-option-in-java >>>>>>> >>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Protocol Buffers" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>> >>>>>> >>>>>>> To post to this group, send email to [email protected]. >>>>>>> Visit this group at https://groups.google.com/group/protobuf. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>> -- > You received this message because you are subscribed to the Google Groups > "Protocol Buffers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/protobuf. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
