Externalize AssignPnf Building Block and refactor existing code accordingly

Issue-ID: SO-2568
Change-Id: I1eec15862d6f0b5e8ae4c952b290be8d5fc786dd
Signed-off-by: Remigiusz Janeczek <remigiusz.janeczek@nokia.com>

3 files changed, 138 insertions, 0 deletions

diff --git a/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegate.java b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegate.java
new file mode 100644
index 0000000000..9176948288
--- /dev/null
+++ b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegate.java
@@ -0,0 +1,40 @@
+package org.onap.so.bpmn.infrastructure.pnf.delegate;
+
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.ExecutionVariableNames.PNF_CORRELATION_ID;
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.ExecutionVariableNames.PNF_UUID;
+import com.google.common.base.Strings;
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+import org.camunda.bpm.engine.delegate.JavaDelegate;
+import org.onap.so.bpmn.common.scripts.ExceptionUtil;
+import org.springframework.stereotype.Component;
+
+@Component
+public class AssignPnfInputsCheckerDelegate implements JavaDelegate {
+
+    public static final String UUID_REGEX =
+            "(?i)^[0-9a-f]{8}-[0-9a-f]{4}-[1-5]{1}[0-9a-f]{3}-[89ab]{1}[0-9a-f]{3}-[0-9a-f]{12}$";
+
+    @Override
+    public void execute(DelegateExecution execution) {
+        validatePnfCorrelationId(execution);
+        validatePnfUuid(execution);
+    }
+
+    private void validatePnfCorrelationId(DelegateExecution execution) {
+        String pnfCorrelationId = (String) execution.getVariable(PNF_CORRELATION_ID);
+        if (Strings.isNullOrEmpty(pnfCorrelationId)) {
+            new ExceptionUtil().buildAndThrowWorkflowException(execution, 9999,
+                    "pnfCorrelationId variable not defined");
+        }
+    }
+
+    private void validatePnfUuid(DelegateExecution execution) {
+        String pnfUuid = (String) execution.getVariable(PNF_UUID);
+        if (Strings.isNullOrEmpty(pnfUuid)) {
+            new ExceptionUtil().buildAndThrowWorkflowException(execution, 9999, "pnfUuid variable not defined");
+        }
+        if (!pnfUuid.matches(UUID_REGEX)) {
+            new ExceptionUtil().buildAndThrowWorkflowException(execution, 9999, "pnfUuid is not a valid UUID");
+        }
+    }
+}
diff --git a/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegateTest.java b/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegateTest.java
new file mode 100644
index 0000000000..a562da490b
--- /dev/null
+++ b/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/AssignPnfInputsCheckerDelegateTest.java
@@ -0,0 +1,52 @@
+package org.onap.so.bpmn.infrastructure.pnf.delegate;
+
+import org.apache.commons.lang3.StringUtils;
+import org.camunda.bpm.engine.delegate.BpmnError;
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+import org.junit.Before;
+import org.junit.Test;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.PnfInputCheckersTestUtils.DelegateExecutionBuilder;
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.PnfInputCheckersTestUtils.RESERVED_UUID;
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.PnfInputCheckersTestUtils.VALID_UUID;
+
+public class AssignPnfInputsCheckerDelegateTest {
+
+    private DelegateExecutionBuilder delegateExecutionBuilder;
+    private AssignPnfInputsCheckerDelegate testedObject;
+    private DelegateExecution execution;
+
+    @Before
+    public void setUp() {
+        testedObject = new AssignPnfInputsCheckerDelegate();
+        delegateExecutionBuilder = new DelegateExecutionBuilder();
+    }
+
+    @Test
+    public void shouldThrowException_whenPnfCorrelationIdNotSet() {
+        execution = delegateExecutionBuilder.setPnfCorrelationId(null).setPnfUuid(VALID_UUID).build();
+        assertThatSutExecutionThrowsExceptionOfInstance(BpmnError.class);
+    }
+
+    @Test
+    public void shouldThrowException_whenPnfUuidIsNotSet() {
+        execution = delegateExecutionBuilder.setPnfUuid(null).build();
+        assertThatSutExecutionThrowsExceptionOfInstance(BpmnError.class);
+    }
+
+    @Test
+    public void shouldThrowException_whenPnfUuidIsEmptyString() {
+        execution = delegateExecutionBuilder.setPnfUuid(StringUtils.EMPTY).build();
+        assertThatSutExecutionThrowsExceptionOfInstance(BpmnError.class);
+    }
+
+    @Test
+    public void shouldThrowException_whenPnfUuidIsReservedUuid() {
+        execution = delegateExecutionBuilder.setPnfUuid(RESERVED_UUID).build();
+        assertThatSutExecutionThrowsExceptionOfInstance(BpmnError.class);
+    }
+
+    private void assertThatSutExecutionThrowsExceptionOfInstance(Class<?> type) {
+        assertThatThrownBy(() -> testedObject.execute(execution)).isInstanceOf(type);
+    }
+}
diff --git a/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/PnfInputCheckersTestUtils.java b/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/PnfInputCheckersTestUtils.java
new file mode 100644
index 0000000000..c1c7f06d4e
--- /dev/null
+++ b/bpmn/so-bpmn-infrastructure-common/src/test/java/org/onap/so/bpmn/infrastructure/pnf/delegate/PnfInputCheckersTestUtils.java
@@ -0,0 +1,46 @@
+package org.onap.so.bpmn.infrastructure.pnf.delegate;
+
+import static org.onap.so.bpmn.infrastructure.pnf.delegate.ExecutionVariableNames.*;
+import org.camunda.bpm.engine.delegate.DelegateExecution;
+import org.camunda.bpm.extension.mockito.delegate.DelegateExecutionFake;
+import java.util.UUID;
+
+
+public class PnfInputCheckersTestUtils {
+
+    static final String PNF_ENTRY_NOTIFICATION_TIMEOUT = "P1D";
+    static final String VALID_UUID = UUID.nameUUIDFromBytes("testUuid".getBytes()).toString();
+    static final String RESERVED_UUID = new UUID(0, 0).toString();
+    private static final String DEFAULT_SERVICE_INSTANCE_ID = "da7d07d9-b71c-4128-809d-2ec01c807169";
+    private static final String DEFAULT_PNF_CORRELATION_ID = "testPnfCorrelationId";
+
+    static class DelegateExecutionBuilder {
+        private String pnfCorrelationId = DEFAULT_PNF_CORRELATION_ID;
+        private String pnfUuid = VALID_UUID;
+        private String serviceInstanceId = DEFAULT_SERVICE_INSTANCE_ID;
+
+        public DelegateExecutionBuilder setPnfCorrelationId(String pnfCorrelationId) {
+            this.pnfCorrelationId = pnfCorrelationId;
+            return this;
+        }
+
+        public DelegateExecutionBuilder setPnfUuid(String pnfUuid) {
+            this.pnfUuid = pnfUuid;
+            return this;
+        }
+
+        public DelegateExecutionBuilder setServiceInstanceId(String serviceInstanceId) {
+            this.serviceInstanceId = serviceInstanceId;
+            return this;
+        }
+
+        public DelegateExecution build() {
+            DelegateExecution execution = new DelegateExecutionFake();
+            execution.setVariable("testProcessKey", "testProcessKeyValue");
+            execution.setVariable(PNF_CORRELATION_ID, this.pnfCorrelationId);
+            execution.setVariable(PNF_UUID, this.pnfUuid);
+            execution.setVariable(SERVICE_INSTANCE_ID, this.serviceInstanceId);
+            return execution;
+        }
+    }
+}