Fix various issues reported by SonarCloud reports

README.md

@@ -524,6 +524,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [Telstra](https://dev.telstra.com)
 - [TUI InfoTec GmbH](http://www.tui-infotec.com/)
 - [unblu inc.](https://www.unblu.com/)
+- [Veamly](https://www.veamly.com/)
 - [Xero](https://www.xero.com/)
 - [Zalando](https://www.zalando.com)
 

modules/openapi-generator-online/src/main/java/org/openapitools/codegen/online/service/ZipUtil.java

@@ -51,18 +51,18 @@ public class ZipUtil {
     public void compressFiles(List<File> listFiles, String destZipFile)
             throws IOException {
 
-        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(destZipFile));
-
-        for (File file : listFiles) {
-            if (file.isDirectory()) {
-                addFolderToZip(file, file.getName(), zos);
-            } else {
-                addFileToZip(file, zos);
+        try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(destZipFile))) {
+
+            for (File file : listFiles) {
+                if (file.isDirectory()) {
+                    addFolderToZip(file, file.getName(), zos);
+                } else {
+                    addFileToZip(file, zos);
+                }
             }
-        }
 
-        zos.flush();
-        zos.close();
+            zos.flush();
+        }
     }
 
     /**
@@ -84,15 +84,12 @@ private void addFolderToZip(File folder, String parentFolder, ZipOutputStream zo
 
             zos.putNextEntry(new ZipEntry(parentFolder + "/" + file.getName()));
 
-            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
-
-            long bytesRead = 0;
-            byte[] bytesIn = new byte[BUFFER_SIZE];
-            int read = 0;
-
-            while ((read = bis.read(bytesIn)) != -1) {
-                zos.write(bytesIn, 0, read);
-                bytesRead += read;
+            try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file))) {
+                byte[] bytesIn = new byte[BUFFER_SIZE];
+                int read;
+                while ((read = bis.read(bytesIn)) != -1) {
+                    zos.write(bytesIn, 0, read);
+                }
             }
 
             zos.closeEntry();
@@ -112,13 +109,12 @@ private static void addFileToZip(File file, ZipOutputStream zos) throws FileNotF
             IOException {
         zos.putNextEntry(new ZipEntry(file.getName()));
 
-        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
-
-        byte[] bytesIn = new byte[BUFFER_SIZE];
-        int read = 0;
-
-        while ((read = bis.read(bytesIn)) != -1) {
-            zos.write(bytesIn, 0, read);
+        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file))) {
+            byte[] bytesIn = new byte[BUFFER_SIZE];
+            int read;
+            while ((read = bis.read(bytesIn)) != -1) {
+                zos.write(bytesIn, 0, read);
+            }
         }
 
         zos.closeEntry();

modules/openapi-generator/src/main/java/org/openapitools/codegen/AbstractGenerator.java

@@ -40,11 +40,11 @@ public File writeToFile(String filename, String contents) throws IOException {
             File parent = new File(output.getParent());
             parent.mkdirs();
         }
-        Writer out = new BufferedWriter(new OutputStreamWriter(
-                new FileOutputStream(output), "UTF-8"));
 
-        out.write(contents);
-        out.close();
+        try (Writer out = new BufferedWriter(new OutputStreamWriter(
+                new FileOutputStream(output), "UTF-8"))) {
+            out.write(contents);
+        }
         return output;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -1251,23 +1251,7 @@ public String toExampleValue(Schema schema) {
             return schema.getExample().toString();
         }
 
-        if (ModelUtils.isBooleanSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isDateSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isDateTimeSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isNumberSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isIntegerSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isStringSchema(schema)) {
-            return "null";
-        } else if (ModelUtils.isObjectSchema(schema)) {
-            return "null";
-        } else {
-            return "null";
-        }
+        return getPropertyDefaultValue(schema);
     }
 
     /**
@@ -1282,6 +1266,16 @@ public String toDefaultValue(Schema schema) {
             return schema.getDefault().toString();
         }
 
+        return getPropertyDefaultValue(schema);
+    }
+
+    /**
+     * Return property value depending on property type
+     * @param schema property type
+     * @return property value
+     */
+    private String getPropertyDefaultValue(Schema schema) {
+        //NOSONAR
         if (ModelUtils.isBooleanSchema(schema)) {
             return "null";
         } else if (ModelUtils.isDateSchema(schema)) {
@@ -4500,6 +4494,7 @@ public CodegenParameter fromFormProperty(String name, Schema propertySchema, Set
     public CodegenParameter fromRequestBody(RequestBody body, Set<String> imports, String bodyParameterName) {
         if (body == null) {
             LOGGER.error("body in fromRequestBody cannot be null!");
+            throw new RuntimeException("body in fromRequestBody cannot be null!");
         }
         CodegenParameter codegenParameter = CodegenModelFactory.newInstance(CodegenModelType.PARAMETER);
         codegenParameter.baseName = "UNKNOWN_BASE_NAME";

modules/openapi-generator/src/main/java/org/openapitools/codegen/SpecValidationException.java

@@ -1,5 +1,6 @@
 package org.openapitools.codegen;
 
+import java.util.Optional;
 import java.util.Set;
 
 public class SpecValidationException extends RuntimeException {
@@ -105,28 +106,28 @@ public void setWarnings(Set<String> warnings) {
     @Override
     public String getMessage() {
         int errorCount = 0;
-        if (errors != null) {
-            errorCount = errors.size();
-        }
+        if (errors != null) errorCount = errors.size();
         int warningCount = 0;
-        if (warnings != null) {
-            warningCount = warnings.size();
-        }
+        if (warnings != null) warningCount = warnings.size();
 
         StringBuilder sb = new StringBuilder();
         sb.append(System.lineSeparator())
             .append("Errors: ")
             .append(System.lineSeparator());
-        errors.forEach(msg ->
-            sb.append("\t-").append(msg).append(System.lineSeparator())
-        );
 
-        if (!warnings.isEmpty()) {
+        Optional.ofNullable(errors).ifPresent(_errors -> {
+            for (String msg : errors) {
+                sb.append("\t-").append(msg).append(System.lineSeparator());
+            }
+        });
+
+        Optional.ofNullable(warnings).filter(warnings -> !warnings.isEmpty()).ifPresent(_errors -> {
             sb.append("Warnings: ").append(System.lineSeparator());
-            warnings.forEach(msg ->
-                    sb.append("\t-").append(msg).append(System.lineSeparator())
-            );
-        }
+            for (String msg : errors) {
+                sb.append("\t-").append(msg).append(System.lineSeparator());
+            }
+        });
+
         return super.getMessage() + " | " +
                 "Error count: " + errorCount + ", Warning count: " + warningCount + sb.toString();
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/examples/ExampleGenerator.java

@@ -254,21 +254,21 @@ private Object resolvePropertyToExample(String propertyName, String mediaType, S
         } else if (ModelUtils.isDateTimeSchema(property)) {
             return "2000-01-23T04:56:07.000+00:00";
         } else if (ModelUtils.isNumberSchema(property)) {
-            Double min = property.getMinimum() == null ? null : property.getMinimum().doubleValue();
-            Double max = property.getMaximum() == null ? null : property.getMaximum().doubleValue();
+            Double min = getPropertyValue(property.getMinimum());
+            Double max = getPropertyValue(property.getMaximum());
             if (ModelUtils.isFloatSchema(property)) { // float
                 return (float) randomNumber(min, max);
             } else if (ModelUtils.isDoubleSchema(property)) { // decimal/double
-                return new BigDecimal(randomNumber(min, max));
+                return BigDecimal.valueOf(randomNumber(min, max));
             } else { // no format defined
                 return randomNumber(min, max);
             }
         } else if (ModelUtils.isFileSchema(property)) {
             return "";  // TODO
 
         } else if (ModelUtils.isIntegerSchema(property)) {
-            Double min = property.getMinimum() == null ? null : property.getMinimum().doubleValue();
-            Double max = property.getMaximum() == null ? null : property.getMaximum().doubleValue();
+            Double min = getPropertyValue(property.getMinimum());
+            Double max = getPropertyValue(property.getMaximum());
             if (ModelUtils.isLongSchema(property)) {
                 return (long) randomNumber(min, max);
             }
@@ -319,6 +319,10 @@ private Object resolvePropertyToExample(String propertyName, String mediaType, S
         return "";
     }
 
+    private Double getPropertyValue(BigDecimal propertyValue) {
+        return propertyValue == null ? null : propertyValue.doubleValue();
+    }
+
     private double randomNumber(Double min, Double max) {
         if (min != null && max != null) {
             double range = max - min;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java

@@ -28,6 +28,7 @@
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
+import java.text.SimpleDateFormat;
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -38,6 +39,8 @@
 public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen implements CodegenConfig {
     private static final Logger LOGGER = LoggerFactory.getLogger(AbstractTypeScriptClientCodegen.class);
 
+    protected final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
+
     private static final String X_DISCRIMINATOR_TYPE = "x-discriminator-value";
     private static final String UNDEFINED_VALUE = "undefined";
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaLagomServerCodegen.java

@@ -78,7 +78,7 @@ public ScalaLagomServerCodegen() {
         importMapping.put("DateTime", "org.joda.time.DateTime");
         importMapping.put("ListBuffer", "scala.collection.mutable.ListBuffer");
 
-        typeMapping = new HashMap<String, String>();
+        typeMapping = new HashMap<>();
         typeMapping.put("Integer", "Int");
         typeMapping.put("enum", "NSString");
         typeMapping.put("array", "Seq");
@@ -91,7 +91,6 @@ public ScalaLagomServerCodegen() {
         typeMapping.put("byte", "Byte");
         typeMapping.put("short", "Short");
         typeMapping.put("char", "Char");
-        typeMapping.put("long", "Long");
         typeMapping.put("double", "Double");
         typeMapping.put("object", "Any");
         typeMapping.put("file", "File");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAngularClientCodegen.java

@@ -34,8 +34,6 @@
 public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCodegen {
     private static final Logger LOGGER = LoggerFactory.getLogger(TypeScriptAngularClientCodegen.class);
 
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
-    private static final String X_DISCRIMINATOR_TYPE = "x-discriminator-value";
     private static String CLASS_NAME_SUFFIX_PATTERN = "^[a-zA-Z0-9]*$";
     private static String FILE_NAME_SUFFIX_PATTERN = "^[a-zA-Z0-9.-]*$";
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java

@@ -30,7 +30,6 @@
 import java.util.*;
 
 public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodegen {
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java

@@ -31,7 +31,6 @@
 import java.util.Map;
 
 public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodegen {
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptInversifyClientCodegen.java

@@ -31,8 +31,6 @@
 import static org.openapitools.codegen.utils.StringUtils.camelize;
 
 public class TypeScriptInversifyClientCodegen extends AbstractTypeScriptClientCodegen {
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
-    private static final String X_DISCRIMINATOR_TYPE = "x-discriminator-value";
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptJqueryClientCodegen.java

@@ -33,7 +33,6 @@
 
 public class TypeScriptJqueryClientCodegen extends AbstractTypeScriptClientCodegen {
     private static final Logger LOGGER = LoggerFactory.getLogger(TypeScriptJqueryClientCodegen.class);
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptNodeClientCodegen.java

@@ -32,7 +32,6 @@
 
 public class TypeScriptNodeClientCodegen extends AbstractTypeScriptClientCodegen {
     private static final Logger LOGGER = LoggerFactory.getLogger(TypeScriptNodeClientCodegen.class);
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptRxjsClientCodegen.java

@@ -31,7 +31,6 @@
 import java.util.Map;
 
 public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen {
-    private static final SimpleDateFormat SNAPSHOT_SUFFIX_FORMAT = new SimpleDateFormat("yyyyMMddHHmm", Locale.ROOT);
 
     public static final String NPM_NAME = "npmName";
     public static final String NPM_VERSION = "npmVersion";

modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java

@@ -38,7 +38,7 @@
 public class DefaultCodegenTest {
 
     @Test
-    public void testHasBodyParameter() throws Exception {
+    public void testHasBodyParameter() {
         final Schema refSchema = new Schema<>().$ref("#/components/schemas/Pet");
         Operation pingOperation = new Operation()
                 .responses(
@@ -61,6 +61,13 @@ public void testHasBodyParameter() throws Exception {
         Assert.assertEquals(codegen.hasBodyParameter(openAPI, createOperation), true);
     }
 
+    @Test(expectedExceptions = RuntimeException.class)
+    public void testParameterEmptyDescription() {
+        DefaultCodegen codegen = new DefaultCodegen();
+
+        codegen.fromRequestBody(null, new HashSet<>(), null);
+    }
+
     @Test
     public void testGetConsumesInfoAndGetProducesInfo() throws Exception {
         final Schema refSchema = new Schema<>().$ref("#/components/schemas/Pet");

modules/openapi-generator/src/test/java/org/openapitools/codegen/SpecValidationExceptionTest.java

@@ -0,0 +1,18 @@
+package org.openapitools.codegen;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+public class SpecValidationExceptionTest {
+
+    @Test
+    public void shouldGetDefaultMessage() {
+        SpecValidationException specValidationException = new SpecValidationException();
+
+        String expectedResult = new StringBuffer("null | Error count: 0, Warning count: 0")
+                .append(System.lineSeparator()).append("Errors: ")
+                .append(System.lineSeparator()).toString();
+
+        Assert.assertEquals(specValidationException.getMessage(), expectedResult);
+    }
+}