KRPC-541: Migrate TLS credentials to gRPC 1.80.0 in-memory provider API

The old static_data_create / set_certificate_provider / watch_* APIs
were removed in gRPC 1.80.0. Use the in-memory provider with explicit
root and identity certificate setters instead.

Author: Mr3zee

grpc/grpc-core/src/nativeMain/kotlin/kotlinx/rpc/grpc/internal/credentials.kt

@@ -11,13 +11,14 @@ import kotlinx.cinterop.CPointer
 import kotlinx.cinterop.ExperimentalForeignApi
 import kotlinx.rpc.internal.utils.InternalRpcApi
 import kotlinx.rpc.grpc.internal.cinterop.grpc_ssl_client_certificate_request_type
+import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_certificate_provider_in_memory_create
+import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_certificate_provider_in_memory_set_identity_certificate
+import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_certificate_provider_in_memory_set_root_certificate
 import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_certificate_provider_release
-import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_certificate_provider_static_data_create
 import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_create
 import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_set_cert_request_type
-import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_set_certificate_provider
-import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_watch_identity_key_cert_pairs
-import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_watch_root_certs
+import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_set_identity_certificate_provider
+import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_credentials_options_set_root_certificate_provider
 import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_identity_pairs_add_pair
 import kotlinx.rpc.grpc.internal.cinterop.grpc_tls_identity_pairs_create
 import kotlinx.rpc.grpc.internal.shim.InternalNativeRpcApi
@@ -46,30 +47,28 @@ public class TlsCredentialsOptionsBuilder {
     public fun build(): CPointer<grpc_tls_credentials_options> {
         val opts = grpc_tls_credentials_options_create() ?: error("alloc opts failed")
 
-        val pairs = if (cert != null && key != null) {
-            val p = grpc_tls_identity_pairs_create() ?: error("pairs alloc failed")
-            grpc_tls_identity_pairs_add_pair(p, key, cert);
-            p
-        } else {
-            null
-        }
+        val provider = grpc_tls_certificate_provider_in_memory_create()
+            ?: error("provider alloc failed")
 
-        if (roots != null || pairs != null) {
-            val provider = grpc_tls_certificate_provider_static_data_create(
-                roots, pairs
-            ) ?: error("provider alloc failed")
-            grpc_tls_credentials_options_set_certificate_provider(opts, provider)
-            grpc_tls_certificate_provider_release(provider)
+        if (roots != null) {
+            check(grpc_tls_certificate_provider_in_memory_set_root_certificate(provider, roots)) {
+                "Failed to set root certificate on in-memory provider"
+            }
+            grpc_tls_credentials_options_set_root_certificate_provider(opts, provider)
         }
 
-
-        if (pairs != null) {
-            grpc_tls_credentials_options_watch_identity_key_cert_pairs(opts)
-        }
-        if (roots != null) {
-            grpc_tls_credentials_options_watch_root_certs(opts)
+        if (cert != null && key != null) {
+            val pairs = grpc_tls_identity_pairs_create() ?: error("pairs alloc failed")
+            grpc_tls_identity_pairs_add_pair(pairs, key, cert)
+            check(grpc_tls_certificate_provider_in_memory_set_identity_certificate(provider, pairs)) {
+                "Failed to set identity certificate on in-memory provider"
+            }
+            // pairs ownership is transferred to set_identity_certificate
+            grpc_tls_credentials_options_set_identity_certificate_provider(opts, provider)
         }
 
+        grpc_tls_certificate_provider_release(provider)
+
         val clientAuth = clientAuth
         if (clientAuth != null) grpc_tls_credentials_options_set_cert_request_type(opts, clientAuth)