-
Notifications
You must be signed in to change notification settings - Fork 124
/
JavaCodeGenerator.scala
82 lines (65 loc) · 2.97 KB
/
JavaCodeGenerator.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*
* Copyright (C) 2018-2020 Lightbend Inc. <https://www.lightbend.com>
*/
package akka.grpc.gen.javadsl
import akka.grpc.gen.{ BuildInfo, CodeGenerator, Logger }
import com.google.protobuf.Descriptors._
import com.google.protobuf.compiler.PluginProtos.{ CodeGeneratorRequest, CodeGeneratorResponse }
import protocbridge.Artifact
import templates.JavaCommon.txt.ApiInterface
import scala.collection.JavaConverters._
import scala.collection.immutable
import com.github.ghik.silencer.silent
abstract class JavaCodeGenerator extends CodeGenerator {
/** Override this to add generated files per service */
def perServiceContent: Set[(Logger, Service) => immutable.Seq[CodeGeneratorResponse.File]] = Set.empty
/** Override these to add service-independent generated files */
def staticContent(@silent("never used") logger: Logger): Set[CodeGeneratorResponse.File] =
Set.empty
def staticContent(
@silent("never used") logger: Logger,
@silent("never used") allServices: Seq[Service]): Set[CodeGeneratorResponse.File] =
Set.empty
override def run(request: CodeGeneratorRequest, logger: Logger): CodeGeneratorResponse = {
val b = CodeGeneratorResponse.newBuilder
// generate services code here, the data types we want to leave to scalapb
val fileDescByName: Map[String, FileDescriptor] =
request.getProtoFileList.asScala.foldLeft[Map[String, FileDescriptor]](Map.empty) {
case (acc, fp) =>
val deps = fp.getDependencyList.asScala.map(acc).toArray
acc + (fp.getName -> FileDescriptor.buildFrom(fp, deps))
}
// Currently per-invocation options, intended to become per-service options eventually
// https://github.com/akka/akka-grpc/issues/451
val params = request.getParameter.toLowerCase
val serverPowerApi = params.contains("server_power_apis") && !params.contains("server_power_apis=false")
val usePlayActions = params.contains("use_play_actions") && !params.contains("use_play_actions=false")
val services = (for {
file <- request.getFileToGenerateList.asScala
fileDesc = fileDescByName(file)
serviceDesc <- fileDesc.getServices.asScala
} yield Service(fileDesc, serviceDesc, serverPowerApi, usePlayActions)).toVector
for {
service <- services
generator <- perServiceContent
generated <- generator(logger, service)
} {
b.addFile(generated)
}
staticContent(logger).map(b.addFile)
staticContent(logger, services).map(b.addFile)
b.build()
}
def generateServiceInterface(service: Service): CodeGeneratorResponse.File = {
val b = CodeGeneratorResponse.File.newBuilder()
b.setContent(ApiInterface(service).body)
b.setName(s"${service.packageDir}/${service.name}.java")
b.build
}
override val suggestedDependencies = (scalaBinaryVersion: CodeGenerator.ScalaBinaryVersion) =>
Seq(
Artifact(
BuildInfo.organization,
BuildInfo.runtimeArtifactName + "_" + scalaBinaryVersion.prefix,
BuildInfo.version))
}