Feature/agentcore iam gateway policy

apps/java-spring-ai-agents/backoffice/expense/ExpenseService.java

@@ -77,4 +77,13 @@ public Expense getExpense(String expenseReference) {
                 .items().stream().findFirst()
                 .orElseThrow(() -> new ResourceNotFoundException("Expense", expenseReference));
     }
+
+    public Expense deleteExpense(String expenseReference) {
+        Expense expense = getExpense(expenseReference);
+        if (expense.getStatus() != Expense.ExpenseStatus.DRAFT) {
+            throw new InvalidOperationException("Only draft expenses can be deleted");
+        }
+        dynamoDbTemplate.delete(expense);
+        return expense;
+    }
 }

apps/java-spring-ai-agents/backoffice/tools/ExpenseTools.java

@@ -61,4 +61,10 @@ public Expense submitExpense(
             @ToolParam(description = "Expense reference (EXP-XXXXXXXX)") String expenseReference) {
         return service.submitExpense(expenseReference);
     }
+
+    @Tool(description = "Delete a draft expense")
+    public Expense deleteExpense(
+            @ToolParam(description = "Expense reference (EXP-XXXXXXXX)") String expenseReference) {
+        return service.deleteExpense(expenseReference);
+    }
 }

apps/java-spring-ai-agents/scripts/13-mcp-policy.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+# Deploy Cedar policy to MCP Gateway
+# Requires AWS CLI 2.32+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Load environment
+if [ -f "$SCRIPT_DIR/.env" ]; then
+    source "$SCRIPT_DIR/.env"
+fi
+
+GATEWAY_ARN="arn:aws:bedrock-agentcore:${AWS_REGION}:${ACCOUNT_ID}:gateway/${MCP_GATEWAY_ID}"
+POLICY_FILE="${SCRIPT_DIR}/backoffice-policy.cedar"
+
+echo "Deploying Cedar policy..."
+echo "  Gateway: ${MCP_GATEWAY_ID}"
+echo "  Policy Engine: ${MCP_POLICY_ENGINE_ID}"
+echo ""
+
+# Read and substitute policy
+POLICY_STATEMENT=$(sed "s|\${GATEWAY_ARN}|${GATEWAY_ARN}|g" "$POLICY_FILE")
+
+# Delete existing policies and wait for deletion
+echo "1. Cleaning up existing policies..."
+EXISTING=$(aws bedrock-agentcore-control list-policies \
+    --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+    --query 'policies[].policyId' --output text 2>/dev/null || true)
+
+for PID in $EXISTING; do
+    echo "   Deleting: $PID"
+    aws bedrock-agentcore-control delete-policy \
+        --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+        --policy-id "$PID" > /dev/null
+
+    # Wait for deletion to complete
+    while true; do
+        STATUS=$(aws bedrock-agentcore-control get-policy \
+            --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+            --policy-id "$PID" \
+            --query 'status' --output text 2>/dev/null || echo "DELETED")
+
+        if [ "$STATUS" = "DELETED" ] || [ -z "$STATUS" ]; then
+            break
+        fi
+        sleep 2
+    done
+done
+
+# Create new policy
+echo ""
+echo "2. Creating policy..."
+POLICY_ID=$(aws bedrock-agentcore-control create-policy \
+    --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+    --name "ForbidDangerousOperations" \
+    --validation-mode "IGNORE_ALL_FINDINGS" \
+    --definition "{\"cedar\":{\"statement\":$(echo "$POLICY_STATEMENT" | jq -Rs .)}}" \
+    --query 'policyId' --output text)
+
+echo "   Policy ID: $POLICY_ID"
+
+# Wait for ACTIVE
+echo ""
+echo "3. Waiting for policy to become ACTIVE..."
+for i in {1..30}; do
+    STATUS=$(aws bedrock-agentcore-control get-policy \
+        --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+        --policy-id "$POLICY_ID" \
+        --query 'status' --output text)
+
+    echo "   Status: $STATUS"
+
+    if [ "$STATUS" = "ACTIVE" ]; then
+        echo ""
+        echo "✅ Policy deployed successfully!"
+        exit 0
+    elif [[ "$STATUS" == *"FAILED"* ]]; then
+        echo ""
+        echo "❌ Policy deployment failed"
+        exit 1
+    fi
+    sleep 2
+done
+
+echo "❌ Timeout waiting for policy"
+exit 1

apps/java-spring-ai-agents/scripts/14-mcp-policy-cleanup.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+# Cleanup Cedar policies from MCP Gateway
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+if [ -f "$SCRIPT_DIR/.env" ]; then
+    source "$SCRIPT_DIR/.env"
+fi
+
+echo "Cleaning up policies from engine: ${MCP_POLICY_ENGINE_ID}"
+echo ""
+
+POLICIES=$(aws bedrock-agentcore-control list-policies \
+    --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+    --query 'policies[].policyId' --output text 2>/dev/null || true)
+
+if [ -z "$POLICIES" ]; then
+    echo "No policies found."
+    exit 0
+fi
+
+for PID in $POLICIES; do
+    echo "Deleting: $PID"
+    aws bedrock-agentcore-control delete-policy \
+        --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+        --policy-id "$PID" > /dev/null
+
+    echo "  Waiting for deletion..."
+    while true; do
+        STATUS=$(aws bedrock-agentcore-control get-policy \
+            --policy-engine-id "${MCP_POLICY_ENGINE_ID}" \
+            --policy-id "$PID" \
+            --query 'status' --output text 2>/dev/null || echo "DELETED")
+
+        if [ "$STATUS" = "DELETED" ] || [ -z "$STATUS" ]; then
+            echo "  ✅ Deleted"
+            break
+        fi
+        echo "  Status: $STATUS"
+        sleep 2
+    done
+done
+
+echo ""
+echo "✅ All policies cleaned up!"

apps/java-spring-ai-agents/scripts/backoffice-policy.cedar

@@ -0,0 +1,11 @@
+// Backoffice MCP Gateway Policy
+// Forbid dangerous operations - everything else allowed by default
+
+forbid(
+  principal,
+  action in [
+    AgentCore::Action::"backoffice___cancelTrip",
+    AgentCore::Action::"backoffice___deleteExpense"
+  ],
+  resource == AgentCore::Gateway::"${GATEWAY_ARN}"
+);