feat(server): allow to refresh generated artifacts on demand

.github/workflows/bindings-server.main.kts

@@ -82,7 +82,7 @@ workflow(
         cleanMavenLocal()
 
         run(
-            name = "Execute the script using the bindings from the serve - with /binding",
+            name = "Execute the script using the bindings from the server - with /binding",
             command = """
                 mv .github/workflows/test-script-consuming-jit-bindings-old.main.do-not-compile.kts .github/workflows/test-script-consuming-jit-bindings-old.main.kts
                 .github/workflows/test-script-consuming-jit-bindings-old.main.kts

.github/workflows/bindings-server.yaml

@@ -49,7 +49,7 @@ jobs:
       name: 'Clean Maven Local to fetch required POMs again'
       run: 'rm -rf ~/.m2/repository/'
     - id: 'step-5'
-      name: 'Execute the script using the bindings from the serve - with /binding'
+      name: 'Execute the script using the bindings from the server - with /binding'
       run: |-
         mv .github/workflows/test-script-consuming-jit-bindings-old.main.do-not-compile.kts .github/workflows/test-script-consuming-jit-bindings-old.main.kts
         .github/workflows/test-script-consuming-jit-bindings-old.main.kts

jit-binding-server/src/main/kotlin/io/github/typesafegithub/workflows/jitbindingserver/Main.kt

@@ -11,6 +11,7 @@ import io.github.typesafegithub.workflows.mavenbinding.buildVersionArtifacts
 import io.github.typesafegithub.workflows.shared.internal.getGithubToken
 import io.ktor.http.ContentType
 import io.ktor.http.HttpStatusCode
+import io.ktor.server.application.ApplicationCall
 import io.ktor.server.application.call
 import io.ktor.server.application.install
 import io.ktor.server.engine.embeddedServer
@@ -58,15 +59,30 @@ fun main() {
                 metadata()
             }
 
+            route("/refresh") {
+                route("{owner}/{name}/{version}/{file}") {
+                    artifact(bindingsCache, refresh = true)
+                }
+
+                route("{owner}/{name}/{file}") {
+                    metadata(refresh = true)
+                }
+            }
+
             get("/status") {
                 call.respondText("OK")
             }
         }
     }.start(wait = true)
 }
 
-private fun Route.metadata() {
+private fun Route.metadata(refresh: Boolean = false) {
     get {
+        if (refresh && !deliverOnRefreshRoute) {
+            call.respondText(text = "Not found", status = HttpStatusCode.NotFound)
+            return@get
+        }
+
         val owner = call.parameters["owner"]!!
         val name = call.parameters["name"]!!
         val file = call.parameters["file"]!!
@@ -88,29 +104,18 @@ private fun Route.metadata() {
     }
 }
 
-private fun Route.artifact(bindingsCache: Cache<ActionCoords, Result<Map<String, Artifact>>>) {
+private fun Route.artifact(
+    bindingsCache: Cache<ActionCoords, Result<Map<String, Artifact>>>,
+    refresh: Boolean = false,
+) {
     get {
-        val owner = call.parameters["owner"]!!
-        val name = call.parameters["name"]!!
-        val version = call.parameters["version"]!!
-        val actionCoords =
-            ActionCoords(
-                owner = owner,
-                name = name,
-                version = version,
-            )
-        println("➡️ Requesting ${actionCoords.prettyPrint}")
-        val bindingArtifacts =
-            bindingsCache
-                .get(actionCoords) {
-                    actionCoords.buildVersionArtifacts()?.let {
-                        Result.success(it)
-                    } ?: Result.failure(object : Throwable() {})
-                }.getOrNull()
-
+        val bindingArtifacts = call.toBindingArtifacts(bindingsCache, refresh)
         if (bindingArtifacts == null) {
             call.respondText("Not found", status = HttpStatusCode.NotFound)
             return@get
+        } else if (refresh && !deliverOnRefreshRoute) {
+            call.respondText(text = "OK")
+            return@get
         }
 
         val file = call.parameters["file"]!!
@@ -131,24 +136,8 @@ private fun Route.artifact(bindingsCache: Cache<ActionCoords, Result<Map<String,
     }
 
     head {
-        val owner = call.parameters["owner"]!!
-        val name = call.parameters["name"]!!
-        val version = call.parameters["version"]!!
+        val bindingArtifacts = call.toBindingArtifacts(bindingsCache, refresh)
         val file = call.parameters["file"]!!
-        val actionCoords =
-            ActionCoords(
-                owner = owner,
-                name = name,
-                version = version,
-            )
-        val bindingArtifacts =
-            bindingsCache
-                .get(actionCoords) {
-                    actionCoords.buildVersionArtifacts()?.let {
-                        Result.success(it)
-                    } ?: Result.failure(object : Throwable() {})
-                }.getOrNull()
-
         if (bindingArtifacts == null) {
             call.respondText("Not found", status = HttpStatusCode.NotFound)
             return@head
@@ -160,3 +149,36 @@ private fun Route.artifact(bindingsCache: Cache<ActionCoords, Result<Map<String,
         }
     }
 }
+
+private suspend fun ApplicationCall.toBindingArtifacts(
+    bindingsCache: Cache<ActionCoords, Result<Map<String, Artifact>>>,
+    refresh: Boolean,
+): Map<String, Artifact>? {
+    val owner = parameters["owner"]!!
+    val name = parameters["name"]!!
+    val version = parameters["version"]!!
+    val actionCoords =
+        ActionCoords(
+            owner = owner,
+            name = name,
+            version = version,
+        )
+    println("➡️ Requesting ${actionCoords.prettyPrint}")
+    val bindingArtifacts =
+        if (refresh) {
+            actionCoords.buildVersionArtifacts().also {
+                bindingsCache.put(actionCoords, Result.of(it))
+            }
+        } else {
+            bindingsCache
+                .get(actionCoords) { Result.of(actionCoords.buildVersionArtifacts()) }
+                .getOrNull()
+        }
+    return bindingArtifacts
+}
+
+private fun Result.Companion.failure(): Result<Nothing> = failure(object : Throwable() {})
+
+private fun <T> Result.Companion.of(value: T?): Result<T> = value?.let { success(it) } ?: failure()
+
+private val deliverOnRefreshRoute = System.getenv("GWKT_DELIVER_ON_REFRESH").toBoolean()