Implement GET endpoint

src/main/kotlin/no/nb/mlt/wls/order/controller/OrderController.kt

@@ -6,9 +6,13 @@ import io.swagger.v3.oas.annotations.media.Schema
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
 import io.swagger.v3.oas.annotations.tags.Tag
+import no.nb.mlt.wls.core.data.HostName
+import no.nb.mlt.wls.order.model.Order
 import no.nb.mlt.wls.order.payloads.ApiOrderPayload
 import no.nb.mlt.wls.order.service.OrderService
 import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.PostMapping
 import org.springframework.web.bind.annotation.RequestBody
 import org.springframework.web.bind.annotation.RequestMapping
@@ -72,4 +76,10 @@ class OrderController(val orderService: OrderService) {
     suspend fun createOrder(
         @RequestBody payload: ApiOrderPayload
     ): ResponseEntity<ApiOrderPayload> = orderService.createOrder(payload)
+
+    @GetMapping("/order/{hostName}/{hostOrderId}")
+    suspend fun getOrder(
+        @PathVariable("hostName") hostName: HostName,
+        @PathVariable("hostOrderId") hostOrderId: String
+    ): ResponseEntity<Order> = orderService.getOrder(hostName, hostOrderId)
 }

src/main/kotlin/no/nb/mlt/wls/order/service/OrderService.kt

@@ -3,14 +3,18 @@ package no.nb.mlt.wls.order.service
 import io.github.oshai.kotlinlogging.KotlinLogging
 import kotlinx.coroutines.reactive.awaitSingle
 import kotlinx.coroutines.reactor.awaitSingleOrNull
+import no.nb.mlt.wls.core.data.HostName
+import no.nb.mlt.wls.order.model.Order
 import no.nb.mlt.wls.order.payloads.ApiOrderPayload
 import no.nb.mlt.wls.order.payloads.toApiOrderPayload
 import no.nb.mlt.wls.order.payloads.toOrder
 import no.nb.mlt.wls.order.payloads.toSynqPayload
 import no.nb.mlt.wls.order.repository.OrderRepository
+import org.springframework.dao.IncorrectResultSizeDataAccessException
 import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity
 import org.springframework.stereotype.Service
+import org.springframework.web.server.ResponseStatusException
 import org.springframework.web.server.ServerErrorException
 import org.springframework.web.server.ServerWebInputException
 import java.time.Duration
@@ -76,4 +80,20 @@ class OrderService(val db: OrderRepository, val synqService: SynqOrderService) {
             throw ServerWebInputException("The order must contain product lines")
         }
     }
+
+    suspend fun getOrder(
+        hostName: HostName,
+        hostOrderId: String
+    ): ResponseEntity<Order> {
+        val order =
+            db.findByHostNameAndHostOrderId(hostName, hostOrderId)
+                .onErrorMap(IncorrectResultSizeDataAccessException::class.java) {
+                    TODO("Handle duplicate order ID's somehow")
+                }
+                .awaitSingleOrNull()
+        if (order != null) {
+            return ResponseEntity.ok(order)
+        }
+        throw ResponseStatusException(HttpStatus.NOT_FOUND, "Order with id $hostOrderId from $hostName was not found")
+    }
 }