[transcoding] Switch to ScalaPB's HttpRule definitions to fix CNF errors (#60)

Author: igor-vovk

core/src/main/scala/org/ivovk/connect_rpc_scala/TranscodingUrlMatcher.scala

@@ -1,7 +1,7 @@
 package org.ivovk.connect_rpc_scala
 
 import cats.implicits.*
-import com.google.api.HttpRule
+import com.google.api.http.{CustomHttpPattern, HttpRule}
 import org.http4s.{Method, Request, Uri}
 import org.ivovk.connect_rpc_scala
 import org.ivovk.connect_rpc_scala.grpc.MethodRegistry
@@ -60,7 +60,7 @@ object TranscodingUrlMatcher {
               Node(
                 variableDef,
                 segment,
-                mkTree(entries.map(e => e.copy(pattern = e.pattern.splitAt(1)._2)).toVector),
+                mkTree(entries.map(e => e.copy(pattern = e.pattern.splitAt(1)._2))),
               )
             )
         }
@@ -74,7 +74,7 @@ object TranscodingUrlMatcher {
       val result = collection.mutable.LinkedHashMap.empty[B, Vector[A]]
 
       it.foreach { elem =>
-        val key  = f(elem)
+        val key = f(elem)
         val vec = result.getOrElse(key, Vector.empty)
         result.update(key, vec :+ elem)
       }
@@ -106,7 +106,7 @@ object TranscodingUrlMatcher {
   ): TranscodingUrlMatcher[F] = {
     val entries = methods.flatMap { method =>
       method.httpRule.fold(List.empty[Entry]) { httpRule =>
-        val additionalBindings = httpRule.getAdditionalBindingsList.asScala.toList
+        val additionalBindings = httpRule.additionalBindings.toList
 
         (httpRule :: additionalBindings).map { rule =>
           val (httpMethod, pattern) = extractMethodAndPattern(rule)
@@ -126,13 +126,13 @@ object TranscodingUrlMatcher {
   }
 
   private def extractMethodAndPattern(rule: HttpRule): (Option[Method], Uri.Path) = {
-    val (method, str) = rule.getPatternCase match
-      case HttpRule.PatternCase.GET => (Method.GET.some, rule.getGet)
-      case HttpRule.PatternCase.PUT => (Method.PUT.some, rule.getPut)
-      case HttpRule.PatternCase.POST => (Method.POST.some, rule.getPost)
-      case HttpRule.PatternCase.DELETE => (Method.DELETE.some, rule.getDelete)
-      case HttpRule.PatternCase.PATCH => (Method.PATCH.some, rule.getPatch)
-      case HttpRule.PatternCase.CUSTOM => (none, rule.getCustom.getPath)
+    val (method, str) = rule.pattern match
+      case HttpRule.Pattern.Get(value) => (Method.GET.some, value)
+      case HttpRule.Pattern.Put(value) => (Method.PUT.some, value)
+      case HttpRule.Pattern.Post(value) => (Method.POST.some, value)
+      case HttpRule.Pattern.Delete(value) => (Method.DELETE.some, value)
+      case HttpRule.Pattern.Patch(value) => (Method.PATCH.some, value)
+      case HttpRule.Pattern.Custom(CustomHttpPattern(kind, value, _)) if kind == "*" => (none, value)
       case other => throw new RuntimeException(s"Unsupported pattern case $other (Rule: $rule)")
 
     val path = Uri.Path.unsafeFromString(str).dropEndsWithSlash
@@ -169,13 +169,13 @@ class TranscodingUrlMatcher[F[_]](
             JObject(groupFields(pathVars)),
             JObject(groupFields(queryParams))
           ).some
-        case RootNode(children) =>
-          children.colFirst(doMatch(_, path, pathVars))
         case _ => none
       }
     }
 
-    doMatch(tree, req.uri.path.segments.toList, List.empty)
+    val path = req.uri.path.segments.toList
+
+    tree.children.colFirst(doMatch(_, path, Nil))
   }
 
 }

core/src/main/scala/org/ivovk/connect_rpc_scala/grpc/MethodRegistry.scala

@@ -1,6 +1,6 @@
 package org.ivovk.connect_rpc_scala.grpc
 
-import com.google.api.{AnnotationsProto, HttpRule}
+import com.google.api.http.HttpRule
 import io.grpc.{MethodDescriptor, ServerMethodDefinition, ServerServiceDefinition}
 import scalapb.grpc.ConcreteProtoMethodDescriptorSupplier
 import scalapb.{GeneratedMessage, GeneratedMessageCompanion}
@@ -47,16 +47,19 @@ object MethodRegistry {
     new MethodRegistry(entries)
   }
 
+  private val HttpFieldNumber = 72295728
+
   private def extractHttpRule(methodDescriptor: MethodDescriptor[_, _]): Option[HttpRule] = {
     methodDescriptor.getSchemaDescriptor match
       case sd: ConcreteProtoMethodDescriptorSupplier =>
         val fields      = sd.getMethodDescriptor.getOptions.getUnknownFields
-        val fieldNumber = AnnotationsProto.http.getNumber
 
-        if fields.hasField(fieldNumber) then
-          Some(HttpRule.parseFrom(fields.getField(fieldNumber).getLengthDelimitedList.get(0).toByteArray))
-        else None
-      case _ => None
+        if fields.hasField(HttpFieldNumber) then
+          Some(HttpRule.parseFrom(fields.getField(HttpFieldNumber).getLengthDelimitedList.get(0).toByteArray))
+        else
+          None
+      case _ => 
+        None
   }
 
 }

core/src/test/scala/org/ivovk/connect_rpc_scala/TranscodingUrlMatcherTest.scala

@@ -1,7 +1,7 @@
 package org.ivovk.connect_rpc_scala
 
 import cats.effect.IO
-import com.google.api.HttpRule
+import com.google.api.http.HttpRule
 import org.http4s.Uri.Path.Root
 import org.http4s.implicits.uri
 import org.http4s.{Method, Request}
@@ -11,24 +11,24 @@ import org.scalatest.funsuite.AnyFunSuiteLike
 
 class TranscodingUrlMatcherTest extends AnyFunSuiteLike {
 
-  val matcher = TranscodingUrlMatcher.create[IO](
+  private val matcher = TranscodingUrlMatcher.create[IO](
     Seq(
       MethodRegistry.Entry(
         MethodName("CountriesService", "CreateCountry"),
         null,
-        Some(HttpRule.newBuilder().setPost("/countries").build()),
+        Some(HttpRule().withPost("/countries")),
         null
       ),
       MethodRegistry.Entry(
         MethodName("CountriesService", "ListCountries"),
         null,
-        Some(HttpRule.newBuilder().setGet("/countries/list").build()),
+        Some(HttpRule().withGet("/countries/list")),
         null
       ),
       MethodRegistry.Entry(
         MethodName("CountriesService", "GetCountry"),
         null,
-        Some(HttpRule.newBuilder().setGet("/countries/{country_id}").build()),
+        Some(HttpRule().withGet("/countries/{country_id}")),
         null
       ),
     ),

core/src/test/scala/org/ivovk/connect_rpc_scala/http/grpc/MethodRegistryTest.scala

@@ -36,7 +36,7 @@ class MethodRegistryTest extends AnyFunSuite {
     val httpRule = entry.get.httpRule.get
 
     assert(httpRule.getPost == "/v1/test/http_annotation_method")
-    assert(httpRule.getBody == "*")
+    assert(httpRule.body == "*")
   }
 
 }