chore: initial commit

Signed-off-by: Alan Brault <alan.brault@visus.io>

src/main/kotlin/io/visus/demos/kotlinapi/domain/model/ComponentHealth.kt

@@ -0,0 +1,7 @@
+package io.visus.demos.kotlinapi.domain.model
+
+data class ComponentHealth(
+    val name: String,
+    val status: ComponentStatus,
+    val message: String? = null,
+)

src/main/kotlin/io/visus/demos/kotlinapi/domain/model/ComponentStatus.kt

@@ -0,0 +1,6 @@
+package io.visus.demos.kotlinapi.domain.model
+
+enum class ComponentStatus {
+    UP,
+    DOWN,
+}

src/main/kotlin/io/visus/demos/kotlinapi/domain/model/HealthStatus.kt

@@ -0,0 +1,27 @@
+package io.visus.demos.kotlinapi.domain.model
+
+import java.time.Instant
+
+data class HealthStatus(
+    val status: Status,
+    val timestamp: Instant,
+    val components: Map<String, ComponentHealth> = emptyMap(),
+) {
+    companion object {
+        fun fromComponents(components: List<ComponentHealth>): HealthStatus {
+            val componentMap = components.associateBy { it.name }
+            val status =
+                when {
+                    components.all { it.status == ComponentStatus.UP } -> Status.UP
+                    components.all { it.status == ComponentStatus.DOWN } -> Status.DOWN
+                    else -> Status.DEGRADED
+                }
+
+            return HealthStatus(
+                status = status,
+                timestamp = Instant.now(),
+                components = componentMap,
+            )
+        }
+    }
+}

src/main/kotlin/io/visus/demos/kotlinapi/domain/model/Status.kt

@@ -0,0 +1,7 @@
+package io.visus.demos.kotlinapi.domain.model
+
+enum class Status {
+    UP,
+    DOWN,
+    DEGRADED,
+}

src/main/kotlin/io/visus/demos/kotlinapi/domain/service/HealthService.kt

@@ -0,0 +1,7 @@
+package io.visus.demos.kotlinapi.domain.service
+
+import io.visus.demos.kotlinapi.domain.model.ComponentHealth
+
+interface HealthService {
+    fun check(): ComponentHealth
+}