/
FileConfigLoader.scala
50 lines (42 loc) · 1.87 KB
/
FileConfigLoader.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
package tech.beshu.ror.configuration
import java.io.InputStreamReader
import java.nio.file.Path
import better.files.File
import io.circe.Json
import io.circe.yaml.parser
import monix.eval.Task
import tech.beshu.ror.Constants
import tech.beshu.ror.configuration.ConfigLoader.{ConfigLoaderError, RawRorConfig}
import tech.beshu.ror.configuration.ConfigLoader.ConfigLoaderError.SpecializedError
import tech.beshu.ror.configuration.FileConfigLoader.FileConfigError
import tech.beshu.ror.configuration.FileConfigLoader.FileConfigError.{FileNotExist, InvalidFileContent}
import tech.beshu.ror.utils.EnvVarsProvider
class FileConfigLoader(esConfigFolderPath: Path,
envVarsProvider: EnvVarsProvider) extends ConfigLoader[FileConfigError] {
override def load(): Task[Either[ConfigLoaderError[FileConfigError], RawRorConfig]] = Task {
val configFile = envVarsProvider.getEnv(Constants.SETTINGS_YAML_FILE_PATH_PROPERTY) match {
case Some(customRorFilePath) => File(customRorFilePath)
case None => File(s"${esConfigFolderPath.toAbsolutePath}/readonlyrest.yml")
}
loadRorConfigFromFile(configFile)
}
private def loadRorConfigFromFile(file: File) = {
for {
_ <- Either.cond(file.exists, (), SpecializedError(FileNotExist(file)))
content <- parseFileContent(file)
} yield RawRorConfig(content)
}
private def parseFileContent(file: File): Either[ConfigLoaderError[FileConfigError], Json] = {
parser
.parse(new InputStreamReader(file.inputStream.get()))
.left.map(ex => SpecializedError(InvalidFileContent(file, ex)))
.flatMap { json => validateRorJson(json) }
}
}
object FileConfigLoader {
sealed trait FileConfigError
object FileConfigError {
final case class FileNotExist(file: File) extends FileConfigError
final case class InvalidFileContent(file: File, throwable: Throwable) extends FileConfigError
}
}