[Fix #930] Adding authorization runtime expression

impl/core/src/main/java/io/serverlessworkflow/impl/AuthorizationDescriptor.java

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2020-Present The Serverless Workflow Specification Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.serverlessworkflow.impl;
+
+public record AuthorizationDescriptor(String scheme, String parameter) {}

impl/core/src/main/java/io/serverlessworkflow/impl/TaskContext.java

@@ -38,6 +38,7 @@ public class TaskContext implements TaskContextData {
   private Instant completedAt;
   private TransitionInfo transition;
   private short retryAttempt;
+  private AuthorizationDescriptor authorization;
 
   public TaskContext(
       WorkflowModel input,
@@ -93,6 +94,14 @@ public WorkflowModel rawInput() {
     return rawInput;
   }
 
+  public AuthorizationDescriptor authorization() {
+    return authorization;
+  }
+
+  public void authorization(String scheme, String parameter) {
+    this.authorization = new AuthorizationDescriptor(scheme, parameter);
+  }
+
   @Override
   public TaskBase task() {
     return task;

impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowApplication.java

@@ -21,6 +21,7 @@
 import io.serverlessworkflow.api.types.Workflow;
 import io.serverlessworkflow.impl.additional.WorkflowAdditionalObject;
 import io.serverlessworkflow.impl.config.ConfigManager;
+import io.serverlessworkflow.impl.config.ConfigSecretManager;
 import io.serverlessworkflow.impl.config.SecretManager;
 import io.serverlessworkflow.impl.config.SystemPropertyConfigManager;
 import io.serverlessworkflow.impl.events.EventConsumer;
@@ -316,7 +317,7 @@ public WorkflowApplication build() {
         secretManager =
             ServiceLoader.load(SecretManager.class)
                 .findFirst()
-                .orElseGet(() -> s -> configManager.config(s, String.class));
+                .orElseGet(() -> new ConfigSecretManager(configManager));
       }
       return new WorkflowApplication(this);
     }

impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowError.java

@@ -28,6 +28,10 @@ public static Builder authorization() {
     return error(Errors.AUTHORIZATION.toString(), Errors.AUTHORIZATION.status());
   }
 
+  public static Builder expression() {
+    return error("https://serverlessworkflow.io/spec/1.0.0/errors/expression", 400);
+  }
+
   public static Builder communication(int status, TaskContext context, Exception ex) {
     return communication(status, context, ex.getMessage());
   }

impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowInstanceData.java

@@ -30,5 +30,7 @@ public interface WorkflowInstanceData {
 
   WorkflowModel output();
 
+  WorkflowModel context();
+
   <T> T outputAs(Class<T> clazz);
 }

impl/core/src/main/java/io/serverlessworkflow/impl/WorkflowMutableInstance.java

@@ -145,6 +145,11 @@ public WorkflowStatus status() {
     return status.get();
   }
 
+  @Override
+  public WorkflowModel context() {
+    return workflowContext.context();
+  }
+
   @Override
   public WorkflowModel output() {
     CompletableFuture<WorkflowModel> future = futureRef.get();

impl/core/src/main/java/io/serverlessworkflow/impl/additional/ConstantAdditionalObject.java

@@ -15,8 +15,8 @@
  */
 package io.serverlessworkflow.impl.additional;
 
-import io.serverlessworkflow.impl.TaskContext;
-import io.serverlessworkflow.impl.WorkflowContext;
+import io.serverlessworkflow.impl.TaskContextData;
+import io.serverlessworkflow.impl.WorkflowContextData;
 
 public class ConstantAdditionalObject<T> implements WorkflowAdditionalObject<T> {
 
@@ -27,7 +27,7 @@ public ConstantAdditionalObject(T object) {
   }
 
   @Override
-  public T apply(WorkflowContext t, TaskContext u) {
+  public T apply(WorkflowContextData t, TaskContextData u) {
     return object;
   }
 }

impl/core/src/main/java/io/serverlessworkflow/impl/additional/SuppliedAdditionalObject.java

@@ -15,8 +15,8 @@
  */
 package io.serverlessworkflow.impl.additional;
 
-import io.serverlessworkflow.impl.TaskContext;
-import io.serverlessworkflow.impl.WorkflowContext;
+import io.serverlessworkflow.impl.TaskContextData;
+import io.serverlessworkflow.impl.WorkflowContextData;
 import java.util.function.Supplier;
 
 public class SuppliedAdditionalObject<T> implements WorkflowAdditionalObject<T> {
@@ -28,7 +28,7 @@ public SuppliedAdditionalObject(Supplier<T> supplier) {
   }
 
   @Override
-  public T apply(WorkflowContext t, TaskContext u) {
+  public T apply(WorkflowContextData t, TaskContextData u) {
     return supplier.get();
   }
 }

impl/core/src/main/java/io/serverlessworkflow/impl/additional/WorkflowAdditionalObject.java

@@ -15,8 +15,9 @@
  */
 package io.serverlessworkflow.impl.additional;
 
-import io.serverlessworkflow.impl.TaskContext;
-import io.serverlessworkflow.impl.WorkflowContext;
+import io.serverlessworkflow.impl.TaskContextData;
+import io.serverlessworkflow.impl.WorkflowContextData;
 import java.util.function.BiFunction;
 
-public interface WorkflowAdditionalObject<T> extends BiFunction<WorkflowContext, TaskContext, T> {}
+public interface WorkflowAdditionalObject<T>
+    extends BiFunction<WorkflowContextData, TaskContextData, T> {}

impl/core/src/main/java/io/serverlessworkflow/impl/config/ConfigManager.java

@@ -19,5 +19,8 @@
 import java.util.Optional;
 
 public interface ConfigManager extends ServicePriority {
+
   <T> Optional<T> config(String propName, Class<T> propClass);
+
+  Iterable<String> names();
 }

impl/core/src/main/java/io/serverlessworkflow/impl/config/ConfigSecretManager.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020-Present The Serverless Workflow Specification Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.serverlessworkflow.impl.config;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class ConfigSecretManager implements SecretManager {
+
+  private final ConfigManager configManager;
+
+  private Map<String, Map<String, String>> secretMap = new ConcurrentHashMap<>();
+
+  public ConfigSecretManager(ConfigManager configManager) {
+    this.configManager = configManager;
+  }
+
+  @Override
+  public Map<String, String> secret(String secretName) {
+    return secretMap.computeIfAbsent(secretName, this::buildMap);
+  }
+
+  private Map<String, String> buildMap(String secretName) {
+    Map<String, String> map = new HashMap<String, String>();
+    final String prefix = secretName + ".";
+    for (String name : configManager.names()) {
+      if (name.startsWith(prefix)) {
+        configManager
+            .config(name, String.class)
+            .ifPresent(v -> map.put(name.substring(prefix.length()), v));
+      }
+    }
+    return map;
+  }
+}

impl/core/src/main/java/io/serverlessworkflow/impl/config/SecretManager.java

@@ -16,9 +16,9 @@
 package io.serverlessworkflow.impl.config;
 
 import io.serverlessworkflow.impl.ServicePriority;
-import java.util.Optional;
+import java.util.Map;
 
 @FunctionalInterface
 public interface SecretManager extends ServicePriority {
-  Optional<String> secret(String secretName);
+  Map<String, String> secret(String secretName);
 }

impl/core/src/main/java/io/serverlessworkflow/impl/config/SystemPropertyConfigManager.java

@@ -27,4 +27,9 @@ protected <T> T convertComplex(String value, Class<T> propClass) {
     throw new UnsupportedOperationException(
         "Conversion of property " + value + " to class " + propClass + " is not supported");
   }
+
+  @Override
+  public Iterable<String> names() {
+    return System.getProperties().keySet().stream().map(Object::toString).toList();
+  }
 }

impl/http/src/main/java/io/serverlessworkflow/impl/executors/http/AbstractAuthProvider.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020-Present The Serverless Workflow Specification Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.serverlessworkflow.impl.executors.http;
+
+import io.serverlessworkflow.api.types.SecretBasedAuthenticationPolicy;
+import io.serverlessworkflow.api.types.Workflow;
+import io.serverlessworkflow.impl.TaskContext;
+import io.serverlessworkflow.impl.WorkflowContext;
+import io.serverlessworkflow.impl.WorkflowModel;
+import jakarta.ws.rs.client.Invocation.Builder;
+
+public abstract class AbstractAuthProvider implements AuthProvider {
+
+  private static final String AUTH_HEADER_FORMAT = "%s %s";
+
+  @Override
+  public Builder build(
+      Builder builder, WorkflowContext workflow, TaskContext task, WorkflowModel model) {
+    String scheme = authScheme();
+    String parameter = authParameter(workflow, task, model);
+    task.authorization(scheme, parameter);
+    builder.header(
+        AuthProviderFactory.AUTH_HEADER_NAME, String.format(AUTH_HEADER_FORMAT, scheme, parameter));
+    return builder;
+  }
+
+  protected final String checkSecret(
+      Workflow workflow, SecretBasedAuthenticationPolicy secretPolicy) {
+    String secretName = secretPolicy.getUse();
+    return workflow.getUse().getSecrets().stream()
+        .filter(s -> s.equals(secretName))
+        .findAny()
+        .orElseThrow(() -> new IllegalStateException("Secret " + secretName + " does not exist"));
+  }
+
+  protected final String find(WorkflowContext context, String secretName, String prop) {
+    return context.definition().application().secretManager().secret(secretName).get(prop);
+  }
+
+  protected abstract String authScheme();
+
+  protected abstract String authParameter(
+      WorkflowContext workflow, TaskContext task, WorkflowModel model);
+}

impl/http/src/main/java/io/serverlessworkflow/impl/executors/http/AuthProvider.java

@@ -21,16 +21,6 @@
 import jakarta.ws.rs.client.Invocation;
 
 interface AuthProvider {
-
-  default void preRequest(
-      Invocation.Builder builder, WorkflowContext workflow, TaskContext task, WorkflowModel model) {
-    // Default implementation does nothing
-  }
-
-  default void postRequest(WorkflowContext workflow, TaskContext task, WorkflowModel model) {
-    // Default implementation does nothing
-  }
-
   Invocation.Builder build(
       Invocation.Builder builder, WorkflowContext workflow, TaskContext task, WorkflowModel model);
 }

impl/http/src/main/java/io/serverlessworkflow/impl/executors/http/BasicAuthProvider.java

@@ -23,16 +23,14 @@
 import io.serverlessworkflow.impl.WorkflowModel;
 import io.serverlessworkflow.impl.WorkflowUtils;
 import io.serverlessworkflow.impl.WorkflowValueResolver;
-import jakarta.ws.rs.client.Invocation.Builder;
 import java.util.Base64;
 
-class BasicAuthProvider implements AuthProvider {
+class BasicAuthProvider extends AbstractAuthProvider {
 
-  private static final String BASIC_TOKEN = "Basic %s";
   private static final String USER_PASSWORD = "%s:%s";
 
-  private WorkflowValueResolver<String> userFilter;
-  private WorkflowValueResolver<String> passwordFilter;
+  private final WorkflowValueResolver<String> userFilter;
+  private final WorkflowValueResolver<String> passwordFilter;
 
   public BasicAuthProvider(
       WorkflowApplication app, Workflow workflow, BasicAuthenticationPolicy authPolicy) {
@@ -44,24 +42,29 @@ public BasicAuthProvider(
           WorkflowUtils.buildStringFilter(
               app, authPolicy.getBasic().getBasicAuthenticationProperties().getPassword());
     } else if (authPolicy.getBasic().getBasicAuthenticationPolicySecret() != null) {
-      throw new UnsupportedOperationException("Secrets are still not supported");
+      String secretName =
+          checkSecret(workflow, authPolicy.getBasic().getBasicAuthenticationPolicySecret());
+      userFilter = (w, t, m) -> find(w, secretName, "username");
+      passwordFilter = (w, t, m) -> find(w, secretName, "password");
+    } else {
+      throw new IllegalStateException("Both secret and properties are null for authorization");
     }
   }
 
   @Override
-  public Builder build(
-      Builder builder, WorkflowContext workflow, TaskContext task, WorkflowModel model) {
-    builder.header(
-        AuthProviderFactory.AUTH_HEADER_NAME,
-        String.format(
-            BASIC_TOKEN,
-            Base64.getEncoder()
-                .encode(
-                    String.format(
-                            USER_PASSWORD,
-                            userFilter.apply(workflow, task, model),
-                            passwordFilter.apply(workflow, task, model))
-                        .getBytes())));
-    return builder;
+  protected String authParameter(WorkflowContext workflow, TaskContext task, WorkflowModel model) {
+    return new String(
+        Base64.getEncoder()
+            .encode(
+                String.format(
+                        USER_PASSWORD,
+                        userFilter.apply(workflow, task, model),
+                        passwordFilter.apply(workflow, task, model))
+                    .getBytes()));
+  }
+
+  @Override
+  protected String authScheme() {
+    return "Basic";
   }
 }