Catch search errors and validation

nise-backend/src/main/kotlin/com/nisemoe/nise/search/SearchController.kt

@@ -4,7 +4,9 @@ import jakarta.validation.Valid
 import jakarta.validation.constraints.Min
 import jakarta.validation.constraints.NotBlank
 import jakarta.validation.constraints.Size
+import org.slf4j.LoggerFactory
 import org.springframework.http.ResponseEntity
+import org.springframework.util.StopWatch
 import org.springframework.web.bind.annotation.PostMapping
 import org.springframework.web.bind.annotation.RequestBody
 import org.springframework.web.bind.annotation.RequestHeader
@@ -15,6 +17,8 @@ class SearchController(
     private val searchService: SearchService
 ) {
 
+    private val logger = LoggerFactory.getLogger(javaClass)
+
     companion object {
 
         const val RESULTS_PER_PAGE = 50
@@ -101,7 +105,7 @@ class SearchController(
     )
 
     data class SearchRequest(
-        @Valid @field:ValidChildQueriesDepth val queries: List<SearchQuery>,
+        @Valid @field:ValidChildQueriesDepth @field:Size(max = 10) val queries: List<SearchQuery>,
         @Valid val sorting: SearchSorting,
         @field:Min(1) val page: Int
     )
@@ -113,8 +117,8 @@ class SearchController(
 
     data class SearchQuery(
         @field:NotBlank @field:Size(max = 300) val logicalOperator: String,
-        @Valid val predicates: List<SearchPredicate>,
-        @Valid @field:ValidChildQueriesDepth val childQueries: List<SearchQuery>?
+        @Valid @field:Size(max = 10) val predicates: List<SearchPredicate>,
+        @Valid @field:ValidChildQueriesDepth @field:Size(max = 10) val childQueries: List<SearchQuery>?
     )
 
     data class SearchPredicate(
@@ -138,11 +142,20 @@ class SearchController(
         if (apiVersion.isBlank())
             return ResponseEntity.badRequest().build()
 
+        // TODO: CSRF
+
+        val stopwatch = StopWatch()
+        stopwatch.start()
+        try {
             val response = this.searchService.search(request)
-
             return ResponseEntity.ok(response)
+        } catch (e: Exception) {
+            this.logger.error("Error while searching: {}", e.stackTraceToString())
+            return ResponseEntity.status(500).build()
+        } finally {
+            stopwatch.stop()
+            this.logger.info("Search took {} seconds", String.format("%.2f", stopwatch.totalTimeSeconds))
+        }
     }
 
-
-
 }