Improve coverage in flow/controller/node

* Extract separate class for property loading
* Extract separate class for extracting uri
* Add coverage for changes above

Change-Id: Ibffa09c96aef2764188cba69bf8cb559c8a9c10e
Issue-ID: APPC-440
Signed-off-by: kurczews <krzysztof.kurczewski@nokia.com>

6 files changed, 201 insertions, 156 deletions

diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/FlowControlNode.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/FlowControlNode.java
index b8ace760a..baca94b36 100644
--- a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/FlowControlNode.java
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/FlowControlNode.java
@@ -73,7 +73,7 @@ public class FlowControlNode implements SvcLogicJavaPlugin {
 
     public void processFlow(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
         log.debug("Received processParamKeys call with params : " + inParams);
-        String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
+        String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PREFIX);
         try {
             responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix + ".") : "";
             SvcLogicContext localContext = new SvcLogicContext();
diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/JsonParsingNode.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/JsonParsingNode.java
index 6a987df74..42f38ba46 100644
--- a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/JsonParsingNode.java
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/JsonParsingNode.java
@@ -44,7 +44,7 @@ public class JsonParsingNode implements SvcLogicJavaPlugin {
     public void parse(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
         String fn = "RestServiceNode.sendRequest";
         log.info("Received processParamKeys call with params : " + inParams);
-        String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
+        String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PREFIX);
         responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix + ".") : "";
         try {
             //Remove below for Block
diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/PropertiesLoader.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/PropertiesLoader.java
new file mode 100644
index 000000000..28792bb10
--- /dev/null
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/PropertiesLoader.java
@@ -0,0 +1,20 @@
+package org.onap.appc.flow.controller.node;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+class PropertiesLoader {
+
+  private PropertiesLoader() {}
+
+  static Properties load(String path) throws IOException {
+    Properties props = new Properties();
+    try (InputStream propStream = new FileInputStream(path)) {
+      props.load(propStream);
+    }
+    return props;
+  }
+
+}
diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/ResourceUriExtractor.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/ResourceUriExtractor.java
new file mode 100644
index 000000000..3cfea31a2
--- /dev/null
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/ResourceUriExtractor.java
@@ -0,0 +1,72 @@
+package org.onap.appc.flow.controller.node;
+
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.HTTP;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_CONTEXT;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_HOST_IP_ADDRESS;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_PORT_NUMBER;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_REQUEST_ACTION;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_SUB_CONTEXT;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_URL;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import java.util.Properties;
+import org.apache.commons.lang.StringUtils;
+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
+
+/**
+ * Helper class for RestServiceNode
+ */
+class ResourceUriExtractor {
+
+  private static final EELFLogger log = EELFManager.getInstance().getLogger(RestServiceNode.class);
+
+  private ResourceUriExtractor() {
+  }
+
+  static String extractResourceUri(SvcLogicContext ctx, Properties prop) throws Exception {
+    String resourceUri = ctx.getAttribute(INPUT_URL);
+
+    if (StringUtils.isBlank(resourceUri)) {
+      resourceUri = getAddress(ctx);
+      log.info("resourceUri= " + resourceUri);
+      resourceUri += getContext(ctx, prop);
+      log.info("resourceUri= " + resourceUri);
+      resourceUri += getSubContext(ctx, prop);
+    }
+    log.info("resourceUri= " + resourceUri);
+
+    return resourceUri;
+  }
+
+  private static String getAddress(SvcLogicContext ctx) {
+    String address = ctx.getAttribute(INPUT_HOST_IP_ADDRESS);
+    String port = ctx.getAttribute(INPUT_PORT_NUMBER);
+    return HTTP + address + ":" + port;
+  }
+
+  private static String getContext(SvcLogicContext ctx, Properties prop) {
+    String context;
+    if (StringUtils.isNotBlank(ctx.getAttribute(INPUT_CONTEXT))) {
+      context = "/" + ctx.getAttribute(INPUT_CONTEXT);
+    } else if (prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION) + ".context") != null) {
+      context = "/" + prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION) + ".context");
+    } else {
+      throw new IllegalArgumentException("Could Not found the context for operation " + ctx.getAttribute(INPUT_REQUEST_ACTION));
+    }
+    return context;
+  }
+
+  private static String getSubContext(SvcLogicContext ctx, Properties prop) {
+    String subContext;
+    if (StringUtils.isNotBlank(ctx.getAttribute(INPUT_SUB_CONTEXT))) {
+      subContext = "/" + ctx.getAttribute(INPUT_SUB_CONTEXT);
+    } else if (prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION) + ".sub-context") != null) {
+      subContext = "/" + prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION) + ".sub-context");
+    } else {
+      throw new IllegalArgumentException("Could Not found the sub context for operation " + ctx.getAttribute(INPUT_REQUEST_ACTION));
+    }
+    return subContext;
+  }
+
+}
diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/RestServiceNode.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/RestServiceNode.java
index d931e47f6..9d7f6e879 100644
--- a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/RestServiceNode.java
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/RestServiceNode.java
@@ -22,140 +22,101 @@
 
 package org.onap.appc.flow.controller.node;
 
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.APPC_FLOW_CONTROLLER;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_PARAM_RESPONSE_PREFIX;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_REQUEST_ACTION;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.OUTPUT_PARAM_ERROR_MESSAGE;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.OUTPUT_PARAM_STATUS;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.OUTPUT_STATUS_FAILURE;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.OUTPUT_STATUS_MESSAGE;
+import static org.onap.appc.flow.controller.utils.FlowControllerConstants.OUTPUT_STATUS_SUCCESS;
+
 import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import java.io.FileInputStream;
 import java.io.IOException;
-import java.io.InputStream;
 import java.util.Map;
 import java.util.Properties;
 import org.apache.commons.lang3.StringUtils;
 import org.onap.appc.flow.controller.data.Transaction;
 import org.onap.appc.flow.controller.executorImpl.RestExecutor;
-import org.onap.appc.flow.controller.utils.FlowControllerConstants;
 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
 import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
 
 public class RestServiceNode implements SvcLogicJavaPlugin {
 
-    private static final  EELFLogger log = EELFManager.getInstance().getLogger(RestServiceNode.class);
-    private static final String SDNC_CONFIG_DIR_VAR = "SDNC_CONFIG_DIR";
-
-    public void sendRequest(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
-        String fn = "RestServiceNode.sendRequest";
-        log.info("Received processParamKeys call with params : " + inParams);
-        String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
-        try {
-            responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix + ".") : "";
-            //Remove below for Block
-            for (Object key : ctx.getAttributeKeySet()) {
-                String parmName = (String) key;
-                String parmValue = ctx.getAttribute(parmName);
-                log.info(fn  + "Getting Key = "  + parmName + "and Value = " +  parmValue);
-            }
-            
-            send(ctx, inParams);
-            ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS,
-                FlowControllerConstants.OUTPUT_STATUS_SUCCESS);
-            
-        } catch (Exception e) {
-            ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS,
-                FlowControllerConstants.OUTPUT_STATUS_FAILURE);
-            ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_ERROR_MESSAGE,
-                e.getMessage());
-            log.error("Error Message : "  + e.getMessage(), e);
-            throw new SvcLogicException(e.getMessage());
-        }
+  private static final EELFLogger log = EELFManager.getInstance().getLogger(RestServiceNode.class);
+  private static final String SDNC_CONFIG_DIR_VAR = "SDNC_CONFIG_DIR";
+
+  public void sendRequest(Map<String, String> inParams, SvcLogicContext ctx)
+      throws SvcLogicException {
+    String fn = "RestServiceNode.sendRequest";
+    log.info("Received processParamKeys call with params : " + inParams);
+    String responsePrefix = inParams.get(INPUT_PARAM_RESPONSE_PREFIX);
+    try {
+      responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix + ".") : "";
+      //Remove below for Block
+      for (Object key : ctx.getAttributeKeySet()) {
+        String parmName = (String) key;
+        String parmValue = ctx.getAttribute(parmName);
+        log.info(fn + "Getting Key = " + parmName + "and Value = " + parmValue);
+      }
+
+      send(ctx, inParams);
+      ctx.setAttribute(responsePrefix + OUTPUT_PARAM_STATUS, OUTPUT_STATUS_SUCCESS);
+
+    } catch (Exception e) {
+      ctx.setAttribute(responsePrefix + OUTPUT_PARAM_STATUS, OUTPUT_STATUS_FAILURE);
+      ctx.setAttribute(responsePrefix + OUTPUT_PARAM_ERROR_MESSAGE, e.getMessage());
+      log.error("Error Message : " + e.getMessage(), e);
+      throw new SvcLogicException(e.getMessage());
     }
-
-    private void send(SvcLogicContext ctx, Map<String, String> inParams) throws Exception {
-        try {
-            Properties prop = loadProperties();
-            log.info("Loaded Properties " + prop.toString());
-            String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
-            String resourceUri = "";
-            if (ctx.getAttribute(FlowControllerConstants.INPUT_URL) != null
-                && !(ctx.getAttribute(FlowControllerConstants.INPUT_URL).isEmpty())) {
-                resourceUri = ctx.getAttribute(FlowControllerConstants.INPUT_URL);
-
-            } else {
-                resourceUri = resourceUri.concat(FlowControllerConstants.HTTP);
-                log.info("resourceUri=  " + resourceUri );
-                resourceUri = resourceUri.concat(ctx.getAttribute(FlowControllerConstants.INPUT_HOST_IP_ADDRESS));
-                resourceUri = resourceUri.concat(":");
-                resourceUri = resourceUri.concat(ctx.getAttribute(FlowControllerConstants.INPUT_PORT_NUMBER));
-
-                if (ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT) != null
-                    && !ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT).isEmpty()) {
-                    resourceUri = resourceUri
-                        .concat("/")
-                        .concat(ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT));
-                    log.info("resourceUri= " + resourceUri );
-
-                } else if (prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                    .concat(".context")) != null ) {
-                    log.info("resourceUri = " + resourceUri );
-                    resourceUri = resourceUri
-                        .concat("/")
-                        .concat(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                            .concat(".context")));
-
-                } else {
-                    throw new Exception("Could Not found the context for operation "
-                        + ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION));
-                }
-
-                if (ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT) != null
-                    && !ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT).isEmpty()) {
-                    resourceUri = resourceUri
-                        .concat("/")
-                        .concat(ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT));
-                    log.info("resourceUri" + resourceUri );
-
-                } else if (prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                    .concat(".sub-context")) != null ) {
-                    resourceUri = resourceUri
-                        .concat("/")
-                        .concat(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                            .concat(".sub-context")));
-                    log.info("resourceUri" + resourceUri );
-                }
-            }
-            log.info("Rest Constructed URL : " + resourceUri);
-
-            Transaction transaction = new Transaction();
-            transaction.setExecutionEndPoint(resourceUri);
-            transaction.setExecutionRPC(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE));
-            transaction.setAction(FlowControllerConstants.INPUT_REQUEST_ACTION);
-            if (ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE) == null
-                || ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE).isEmpty()) {
-                throw new Exception("Dont know REST operation for Action " + transaction.getExecutionRPC());
-            }
-            if (ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION) == null
-                || ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).isEmpty()) {
-                throw new Exception("Dont know request-action " + transaction.getAction());
-            }
-
-            //This code need to get changed to get the UserID and pass from a common place.
-            if (transaction.getuId() == null) {
-                transaction.setuId(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                    .concat(".default-rest-user")));
-            }
-            if (transaction.getPswd() == null) {
-                transaction.setPswd(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION)
-                    .concat(".default-rest-pass")));
-            }
-
-            RestExecutor restRequestExecutor = new RestExecutor();
-            Map<String, String> output = restRequestExecutor.execute(transaction, ctx);
-
-            if (isValidJson(output.get("restResponse")) != null) {
-                ctx.setAttribute(responsePrefix + "." + FlowControllerConstants.OUTPUT_STATUS_MESSAGE,
-                    output.get("restResponse"));
+  }
+
+  private void send(SvcLogicContext ctx, Map<String, String> inParams) throws Exception {
+    try {
+      Properties prop = loadProperties();
+      log.info("Loaded Properties " + prop.toString());
+      String responsePrefix = inParams.get(INPUT_PARAM_RESPONSE_PREFIX);
+      String resourceUri = ResourceUriExtractor.extractResourceUri(ctx, prop);
+      log.info("Rest Constructed URL : " + resourceUri);
+
+      Transaction transaction = new Transaction();
+      transaction.setExecutionEndPoint(resourceUri);
+      transaction
+          .setExecutionRPC(ctx.getAttribute(INPUT_REQUEST_ACTION_TYPE));
+      transaction.setAction(INPUT_REQUEST_ACTION);
+      if (ctx.getAttribute(INPUT_REQUEST_ACTION_TYPE) == null
+          || ctx.getAttribute(INPUT_REQUEST_ACTION_TYPE).isEmpty()) {
+        throw new Exception("Dont know REST operation for Action " + transaction.getExecutionRPC());
+      }
+      if (ctx.getAttribute(INPUT_REQUEST_ACTION) == null
+          || ctx.getAttribute(INPUT_REQUEST_ACTION).isEmpty()) {
+        throw new Exception("Dont know request-action " + transaction.getAction());
+      }
+
+      //This code need to get changed to get the UserID and pass from a common place.
+      if (transaction.getuId() == null) {
+        transaction
+            .setuId(prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION)
+                .concat(".default-rest-user")));
+      }
+      if (transaction.getPswd() == null) {
+        transaction
+            .setPswd(prop.getProperty(ctx.getAttribute(INPUT_REQUEST_ACTION)
+                .concat(".default-rest-pass")));
+      }
+
+      RestExecutor restRequestExecutor = new RestExecutor();
+      Map<String, String> output = restRequestExecutor.execute(transaction, ctx);
+
+      if (isValidJson(output.get("restResponse")) != null) {
+        ctx.setAttribute(responsePrefix + "." + OUTPUT_STATUS_MESSAGE,
+            output.get("restResponse"));
 //                JsonNode restResponse = isValidJson(output.get("restResponse"));
 //                for (String key : inParams.keySet()) {
 //                    if(key !=null &&  key.startsWith("output-")){
@@ -169,46 +130,38 @@ public class RestServiceNode implements SvcLogicJavaPlugin {
 //                                 ctx.setAttribute(responsePrefix + "." + key, null);
 //                    }
 //                }                
-            }
-            log.info("Response from Rest :" );
+      }
+      log.info("Response from Rest :");
 
-        } catch(Exception e) {
-            log.error("Error Message: " + e.getMessage(), e);
-            throw e;
-        }
+    } catch (Exception e) {
+      log.error("Error Message: " + e.getMessage(), e);
+      throw e;
     }
+  }
 
-    private Properties loadProperties() throws Exception {
-        Properties props = new Properties();
-        String propDir = System.getenv(SDNC_CONFIG_DIR_VAR);
-        if (propDir == null) {
-            throw new Exception("Cannot find Property file -" + SDNC_CONFIG_DIR_VAR);
-        }
-        String propFile = propDir + FlowControllerConstants.APPC_FLOW_CONTROLLER;
-        try (InputStream propStream = new FileInputStream(propFile)) {
-
-            props.load(propStream);
-        }
-        catch (Exception e) {
-            throw new Exception("Could not load properties file " + propFile, e);
-        }
-        return props;
+  private Properties loadProperties() throws Exception {
+    String directory = System.getenv(SDNC_CONFIG_DIR_VAR);
+    if (directory == null) {
+      throw new Exception("Cannot find Property file: " + SDNC_CONFIG_DIR_VAR);
     }
-
-    private JsonNode isValidJson(String json) throws IOException {
-        JsonNode output;
-        log.info("Received response from Interface " + json);
-        if (json == null  || json.isEmpty()) {
-            return null;
-        }
-        try {
-            ObjectMapper objectMapper = new ObjectMapper();
-            output = objectMapper.readTree(json);
-        } catch(JsonProcessingException e) {
-            log.warn("Response received from interface is not a valid JSON block" + json, e);
-            return null;
-        }
-        log.info("state is " + output.findValue("state"));
-        return output;
+    String path = directory + APPC_FLOW_CONTROLLER;
+    return PropertiesLoader.load(path);
+  }
+
+  private JsonNode isValidJson(String json) throws IOException {
+    JsonNode output;
+    log.info("Received response from Interface " + json);
+    if (json == null || json.isEmpty()) {
+      return null;
+    }
+    try {
+      ObjectMapper objectMapper = new ObjectMapper();
+      output = objectMapper.readTree(json);
+    } catch (JsonProcessingException e) {
+      log.warn("Response received from interface is not a valid JSON block" + json, e);
+      return null;
     }
+    log.info("state is " + output.findValue("state"));
+    return output;
+  }
 }
diff --git a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/utils/FlowControllerConstants.java b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/utils/FlowControllerConstants.java
index b67f19329..502438c31 100644
--- a/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/utils/FlowControllerConstants.java
+++ b/appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/utils/FlowControllerConstants.java
@@ -32,7 +32,7 @@ public class FlowControllerConstants {
     public static final String DATA_TYPE_XML = "XML";
     public static final String DATA_TYPE_SQL = "SQL";
 
-    public static final String INPUT_PARAM_RESPONSE_PRIFIX = "responsePrefix";
+    public static final String INPUT_PARAM_RESPONSE_PREFIX = "responsePrefix";
 
     public static final String OUTPUT_PARAM_STATUS = "status";
     public static final String OUTPUT_PARAM_ERROR_MESSAGE = "error-message";