From 4d1197099ce4e721c18bf4cacbb2e1980e4210b5 Mon Sep 17 00:00:00 2001
From: Jakob Odersky <jakob@driver.xyz>
Date: Wed, 12 Sep 2018 16:40:57 -0700
Subject: Move REST functionality to separate project

---
 .../driver/core/rest/serviceRequestContext.scala   | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 core-rest/src/main/scala/xyz/driver/core/rest/serviceRequestContext.scala

(limited to 'core-rest/src/main/scala/xyz/driver/core/rest/serviceRequestContext.scala')

diff --git a/core-rest/src/main/scala/xyz/driver/core/rest/serviceRequestContext.scala b/core-rest/src/main/scala/xyz/driver/core/rest/serviceRequestContext.scala
new file mode 100644
index 0000000..d2e4bc3
--- /dev/null
+++ b/core-rest/src/main/scala/xyz/driver/core/rest/serviceRequestContext.scala
@@ -0,0 +1,87 @@
+package xyz.driver.core.rest
+
+import java.net.InetAddress
+
+import xyz.driver.core.auth.{AuthToken, PermissionsToken, User}
+import xyz.driver.core.generators
+import scalaz.Scalaz.{mapEqual, stringInstance}
+import scalaz.syntax.equal._
+import xyz.driver.core.reporting.SpanContext
+import xyz.driver.core.rest.auth.AuthProvider
+import xyz.driver.core.rest.headers.Traceparent
+
+import scala.util.Try
+
+class ServiceRequestContext(
+    val trackingId: String = generators.nextUuid().toString,
+    val originatingIp: Option[InetAddress] = None,
+    val contextHeaders: Map[String, String] = Map.empty[String, String]) {
+  def authToken: Option[AuthToken] =
+    contextHeaders.get(AuthProvider.AuthenticationTokenHeader).map(AuthToken.apply)
+
+  def permissionsToken: Option[PermissionsToken] =
+    contextHeaders.get(AuthProvider.PermissionsTokenHeader).map(PermissionsToken.apply)
+
+  def withAuthToken(authToken: AuthToken): ServiceRequestContext =
+    new ServiceRequestContext(
+      trackingId,
+      originatingIp,
+      contextHeaders.updated(AuthProvider.AuthenticationTokenHeader, authToken.value)
+    )
+
+  def withAuthenticatedUser[U <: User](authToken: AuthToken, user: U): AuthorizedServiceRequestContext[U] =
+    new AuthorizedServiceRequestContext(
+      trackingId,
+      originatingIp,
+      contextHeaders.updated(AuthProvider.AuthenticationTokenHeader, authToken.value),
+      user
+    )
+
+  override def hashCode(): Int =
+    Seq[Any](trackingId, originatingIp, contextHeaders)
+      .foldLeft(31)((result, obj) => 31 * result + obj.hashCode())
+
+  override def equals(obj: Any): Boolean = obj match {
+    case ctx: ServiceRequestContext =>
+      trackingId === ctx.trackingId &&
+        originatingIp == originatingIp &&
+        contextHeaders === ctx.contextHeaders
+    case _ => false
+  }
+
+  def spanContext: SpanContext = {
+    val validHeader = Try {
+      contextHeaders(Traceparent.name)
+    }.flatMap { value =>
+      Traceparent.parse(value)
+    }
+    validHeader.map(_.spanContext).getOrElse(SpanContext.fresh())
+  }
+
+  override def toString: String = s"ServiceRequestContext($trackingId, $contextHeaders)"
+}
+
+class AuthorizedServiceRequestContext[U <: User](
+    override val trackingId: String = generators.nextUuid().toString,
+    override val originatingIp: Option[InetAddress] = None,
+    override val contextHeaders: Map[String, String] = Map.empty[String, String],
+    val authenticatedUser: U)
+    extends ServiceRequestContext {
+
+  def withPermissionsToken(permissionsToken: PermissionsToken): AuthorizedServiceRequestContext[U] =
+    new AuthorizedServiceRequestContext[U](
+      trackingId,
+      originatingIp,
+      contextHeaders.updated(AuthProvider.PermissionsTokenHeader, permissionsToken.value),
+      authenticatedUser)
+
+  override def hashCode(): Int = 31 * super.hashCode() + authenticatedUser.hashCode()
+
+  override def equals(obj: Any): Boolean = obj match {
+    case ctx: AuthorizedServiceRequestContext[U] => super.equals(ctx) && ctx.authenticatedUser == authenticatedUser
+    case _                                       => false
+  }
+
+  override def toString: String =
+    s"AuthorizedServiceRequestContext($trackingId, $contextHeaders, $authenticatedUser)"
+}
-- 
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