add java.io.Serial annotations to serialVersionUID fields

Mapping these fields as Integer limits the possible maximum TTL value to
roughly 68 years. This may or may not be a reasonable value, but is
technically a valid number in the JSON response. Convert all TTL-related
fields to Long, so we can map such values.

.github/workflows/ci-it.yml

@@ -14,11 +14,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        jdk: [ 11, 17, 21 ]
+        jdk: [ 17, 21 ]
-        vault: [ '1.2.0', '1.19.5' ]
+        vault: [ '1.2.0', '1.20.0' ]
         include:
           - jdk: 21
-            vault: '1.19.5'
+            vault: '1.20.0'
             analysis: true
     steps:
       - name: Checkout

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        jdk: [ 11, 17, 21 ]
+        jdk: [ 17, 21 ]
         include:
           - jdk: 21
             analysis: true

CHANGELOG.md

@@ -1,3 +1,18 @@
+## unreleased
+
+### Breaking
+* Requires Java 17 or later (#100)
+
+### Dependencies
+* Updated Jackson to 2.19.1 (#101)
+
+### Fix
+* Use `Long` for numeric TTL fields (#103) (#104)
+
+### Test
+* Tested against Vault 1.2 to 1.20 (#102)
+
+
 ## 1.5.1 (2025-06-02)
 
 ### Improvements

README.md

@@ -32,7 +32,7 @@ Java Vault Connector is a connector library for [Vault](https://www.vaultproject
     * Database secret handling
 * Transit API support
 * Connector Factory with builder pattern
-* Tested against Vault 1.2 to 1.19
+* Tested against Vault 1.2 to 1.20
 
 
 ## Maven Artifact

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>de.stklcode.jvault</groupId>
     <artifactId>jvault-connector</artifactId>
-    <version>1.5.1</version>
+    <version>2.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -33,7 +33,7 @@
         <connection>scm:git:git://github.com/stklcode/jvaultconnector.git</connection>
         <developerConnection>scm:git:git@github.com:stklcode/jvaultconnector.git</developerConnection>
         <url>https://github.com/stklcode/jvaultconnector</url>
-        <tag>v1.5.1</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <issueManagement>
@@ -43,7 +43,6 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.build.outputTimestamp>2025-06-02T14:59:15Z</project.build.outputTimestamp>
         <argLine />
     </properties>
 
@@ -51,18 +50,18 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-             <version>2.19.0</version>
+             <version>2.19.1</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jsr310</artifactId>
-            <version>2.19.0</version>
+            <version>2.19.1</version>
         </dependency>
 
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
-            <version>5.13.0</version>
+            <version>5.13.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -80,7 +79,7 @@
         <dependency>
             <groupId>org.wiremock</groupId>
             <artifactId>wiremock</artifactId>
-            <version>3.13.0</version>
+            <version>3.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -92,7 +91,7 @@
         <dependency>
             <groupId>nl.jqno.equalsverifier</groupId>
             <artifactId>equalsverifier</artifactId>
-            <version>3.19.4</version>
+            <version>4.0.4</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -111,13 +110,13 @@
                     <artifactId>maven-compiler-plugin</artifactId>
                     <version>3.14.0</version>
                     <configuration>
-                        <release>11</release>
+                        <release>17</release>
                     </configuration>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-clean-plugin</artifactId>
-                    <version>3.4.1</version>
+                    <version>3.5.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
@@ -208,7 +207,7 @@
                                     <version>[3.6.3,)</version>
                                 </requireMavenVersion>
                                 <requireJavaVersion>
-                                    <version>[11,)</version>
+                                    <version>[17,)</version>
                                 </requireJavaVersion>
                             </rules>
                         </configuration>
@@ -254,7 +253,7 @@
                         <artifactId>maven-javadoc-plugin</artifactId>
                         <version>3.11.2</version>
                         <configuration>
-                            <source>11</source>
+                            <source>17</source>
                         </configuration>
                         <executions>
                             <execution>
@@ -370,7 +369,7 @@
                     <plugin>
                         <groupId>org.owasp</groupId>
                         <artifactId>dependency-check-maven</artifactId>
-                        <version>12.1.1</version>
+                        <version>12.1.3</version>
                         <configuration>
                             <nvdApiKey>${env.NVD_API_KEY}</nvdApiKey>
                             <nvdDatafeedUrl>${env.NVD_DATAFEED_URL}</nvdDatafeedUrl>
@@ -394,7 +393,7 @@
                     <plugin>
                         <groupId>org.sonatype.central</groupId>
                         <artifactId>central-publishing-maven-plugin</artifactId>
-                        <version>0.7.0</version>
+                        <version>0.8.0</version>
                         <extensions>true</extensions>
                         <configuration>
                             <publishingServerId>central</publishingServerId>

src/main/java/de/stklcode/jvault/connector/exception/AuthorizationRequiredException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown trying to do a request without any authorization handles.
  *
@@ -23,5 +25,6 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public class AuthorizationRequiredException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = 2629577936657393880L;
 }

src/main/java/de/stklcode/jvault/connector/exception/ConnectionException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown on problems with connection to Vault backend.
  *
@@ -23,6 +25,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public class ConnectionException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = 3005430116002990418L;
 
     /**

src/main/java/de/stklcode/jvault/connector/exception/InvalidRequestException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown when trying to send malformed request.
  *
@@ -23,6 +25,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public class InvalidRequestException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = -6712239648281809159L;
 
     /**

src/main/java/de/stklcode/jvault/connector/exception/InvalidResponseException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown when response from vault returned with erroneous status code or payload could not be parsed
  * to entity class.
@@ -24,6 +26,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public final class InvalidResponseException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = 2003151038614163479L;
 
     private final Integer statusCode;

src/main/java/de/stklcode/jvault/connector/exception/PermissionDeniedException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown when trying to access a path the current user/token does not have permission to access.
  *
@@ -23,6 +25,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public class PermissionDeniedException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = -7149134015090750776L;
 
     /**

src/main/java/de/stklcode/jvault/connector/exception/TlsException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Exception thrown on errors with TLS connection.
  *
@@ -23,6 +25,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.4.0
  */
 public class TlsException extends VaultConnectorException {
+    @Serial
     private static final long serialVersionUID = -5139276834988258086L;
 
     /**

src/main/java/de/stklcode/jvault/connector/exception/VaultConnectorException.java

@@ -16,6 +16,8 @@
 
 package de.stklcode.jvault.connector.exception;
 
+import java.io.Serial;
+
 /**
  * Abstract Exception class for Vault Connector internal exceptions.
  *
@@ -23,6 +25,7 @@ package de.stklcode.jvault.connector.exception;
  * @since 0.1
  */
 public abstract class VaultConnectorException extends Exception {
+    @Serial
     private static final long serialVersionUID = -2612477894310906036L;
 
     /**

src/main/java/de/stklcode/jvault/connector/model/AppRole.java

@@ -18,6 +18,8 @@ package de.stklcode.jvault.connector.model;
 
 import com.fasterxml.jackson.annotation.*;
 
+import java.io.Serial;
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
@@ -32,7 +34,8 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AppRole implements Serializable {
-    private static final long serialVersionUID = 693228837510483448L;
+    @Serial
+    private static final long serialVersionUID = 1546673231280751679L;
 
     @JsonProperty("role_name")
     private String name;
@@ -53,7 +56,7 @@ public final class AppRole implements Serializable {
 
     @JsonProperty("secret_id_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer secretIdTtl;
+    private Long secretIdTtl;
 
     @JsonProperty("local_secret_ids")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -61,11 +64,11 @@ public final class AppRole implements Serializable {
 
     @JsonProperty("token_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer tokenTtl;
+    private Long tokenTtl;
 
     @JsonProperty("token_max_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer tokenMaxTtl;
+    private Long tokenMaxTtl;
 
     private List<String> tokenPolicies;
 
@@ -75,7 +78,7 @@ public final class AppRole implements Serializable {
 
     @JsonProperty("token_explicit_max_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer tokenExplicitMaxTtl;
+    private Long tokenExplicitMaxTtl;
 
     @JsonProperty("token_no_default_policy")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -255,7 +258,7 @@ public final class AppRole implements Serializable {
     /**
      * @return maximum TTL in seconds for secrets
      */
-    public Integer getSecretIdTtl() {
+    public Long getSecretIdTtl() {
         return secretIdTtl;
     }
 
@@ -271,14 +274,14 @@ public final class AppRole implements Serializable {
     /**
      * @return token TTL in seconds
      */
-    public Integer getTokenTtl() {
+    public Long getTokenTtl() {
         return tokenTtl;
     }
 
     /**
      * @return maximum token TTL in seconds, including renewals
      */
-    public Integer getTokenMaxTtl() {
+    public Long getTokenMaxTtl() {
         return tokenMaxTtl;
     }
 
@@ -286,7 +289,7 @@ public final class AppRole implements Serializable {
      * @return explicit maximum token TTL in seconds, including renewals
      * @since 0.9
      */
-    public Integer getTokenExplicitMaxTtl() {
+    public Long getTokenExplicitMaxTtl() {
         return tokenExplicitMaxTtl;
     }
 
@@ -370,12 +373,12 @@ public final class AppRole implements Serializable {
         private List<String> secretIdBoundCidrs;
         private List<String> tokenPolicies;
         private Integer secretIdNumUses;
-        private Integer secretIdTtl;
+        private Long secretIdTtl;
         private Boolean localSecretIds;
-        private Integer tokenTtl;
+        private Long tokenTtl;
-        private Integer tokenMaxTtl;
+        private Long tokenMaxTtl;
         private List<String> tokenBoundCidrs;
-        private Integer tokenExplicitMaxTtl;
+        private Long tokenExplicitMaxTtl;
         private Boolean tokenNoDefaultPolicy;
         private Integer tokenNumUses;
         private Integer tokenPeriod;
@@ -520,7 +523,7 @@ public final class AppRole implements Serializable {
          * @param secretIdTtl the TTL
          * @return self
          */
-        public Builder withSecretIdTtl(final Integer secretIdTtl) {
+        public Builder withSecretIdTtl(final Long secretIdTtl) {
             this.secretIdTtl = secretIdTtl;
             return this;
         }
@@ -544,7 +547,7 @@ public final class AppRole implements Serializable {
          * @param tokenTtl the TTL
          * @return self
          */
-        public Builder withTokenTtl(final Integer tokenTtl) {
+        public Builder withTokenTtl(final Long tokenTtl) {
             this.tokenTtl = tokenTtl;
             return this;
         }
@@ -555,7 +558,7 @@ public final class AppRole implements Serializable {
          * @param tokenMaxTtl the TTL
          * @return self
          */
-        public Builder withTokenMaxTtl(final Integer tokenMaxTtl) {
+        public Builder withTokenMaxTtl(final Long tokenMaxTtl) {
             this.tokenMaxTtl = tokenMaxTtl;
             return this;
         }
@@ -596,7 +599,7 @@ public final class AppRole implements Serializable {
          * @param tokenExplicitMaxTtl the TTL
          * @return self
          */
-        public Builder withTokenExplicitMaxTtl(final Integer tokenExplicitMaxTtl) {
+        public Builder withTokenExplicitMaxTtl(final Long tokenExplicitMaxTtl) {
             this.tokenExplicitMaxTtl = tokenExplicitMaxTtl;
             return this;
         }

src/main/java/de/stklcode/jvault/connector/model/AppRoleSecret.java

@@ -18,6 +18,7 @@ package de.stklcode.jvault.connector.model;
 
 import com.fasterxml.jackson.annotation.*;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Map;
@@ -32,6 +33,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AppRoleSecret implements Serializable {
+    @Serial
     private static final long serialVersionUID = -3401074170145792641L;
 
     @JsonProperty("secret_id")

src/main/java/de/stklcode/jvault/connector/model/Token.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.*;
 
@@ -32,7 +33,8 @@ import java.util.*;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class Token implements Serializable {
-    private static final long serialVersionUID = 5208508683665365287L;
+    @Serial
+    private static final long serialVersionUID = 7003016071684507115L;
 
     @JsonProperty("id")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -56,11 +58,11 @@ public final class Token implements Serializable {
 
     @JsonProperty("ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer ttl;
+    private Long ttl;
 
     @JsonProperty("explicit_max_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer explicitMaxTtl;
+    private Long explicitMaxTtl;
 
     @JsonProperty("num_uses")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -162,7 +164,7 @@ public final class Token implements Serializable {
     /**
      * @return Time-to-live in seconds
      */
-    public Integer getTtl() {
+    public Long getTtl() {
         return ttl;
     }
 
@@ -170,7 +172,7 @@ public final class Token implements Serializable {
      * @return Explicit maximum time-to-live in seconds
      * @since 0.9
      */
-    public Integer getExplicitMaxTtl() {
+    public Long getExplicitMaxTtl() {
         return explicitMaxTtl;
     }
 
@@ -282,8 +284,8 @@ public final class Token implements Serializable {
         private String displayName;
         private Boolean noParent;
         private Boolean noDefaultPolicy;
-        private Integer ttl;
+        private Long ttl;
-        private Integer explicitMaxTtl;
+        private Long explicitMaxTtl;
         private Integer numUses;
         private List<String> policies;
         private Map<String, String> meta;
@@ -331,7 +333,7 @@ public final class Token implements Serializable {
          * @param ttl the ttl
          * @return self
          */
-        public Builder withTtl(final Integer ttl) {
+        public Builder withTtl(final Long ttl) {
             this.ttl = ttl;
             return this;
         }
@@ -342,7 +344,7 @@ public final class Token implements Serializable {
          * @param explicitMaxTtl the explicit max. TTL
          * @return self
          */
-        public Builder withExplicitMaxTtl(final Integer explicitMaxTtl) {
+        public Builder withExplicitMaxTtl(final Long explicitMaxTtl) {
             this.explicitMaxTtl = explicitMaxTtl;
             return this;
         }

src/main/java/de/stklcode/jvault/connector/model/TokenRole.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
@@ -34,7 +35,8 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class TokenRole implements Serializable {
-    private static final long serialVersionUID = -3505215215838576321L;
+    @Serial
+    private static final long serialVersionUID = -4856948364869438439L;
 
     @JsonProperty("name")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -78,7 +80,7 @@ public final class TokenRole implements Serializable {
 
     @JsonProperty("token_explicit_max_ttl")
     @JsonInclude(JsonInclude.Include.NON_NULL)
-    private Integer tokenExplicitMaxTtl;
+    private Long tokenExplicitMaxTtl;
 
     @JsonProperty("token_no_default_policy")
     @JsonInclude(JsonInclude.Include.NON_NULL)
@@ -204,7 +206,7 @@ public final class TokenRole implements Serializable {
     /**
      * @return Token explicit maximum TTL
      */
-    public Integer getTokenExplicitMaxTtl() {
+    public Long getTokenExplicitMaxTtl() {
         return tokenExplicitMaxTtl;
     }
 
@@ -285,7 +287,7 @@ public final class TokenRole implements Serializable {
         private String pathSuffix;
         private List<String> allowedEntityAliases;
         private List<String> tokenBoundCidrs;
-        private Integer tokenExplicitMaxTtl;
+        private Long tokenExplicitMaxTtl;
         private Boolean tokenNoDefaultPolicy;
         private Integer tokenNumUses;
         private Integer tokenPeriod;
@@ -537,7 +539,7 @@ public final class TokenRole implements Serializable {
          * @param tokenExplicitMaxTtl explicit maximum TTL
          * @return self
          */
-        public Builder withTokenExplicitMaxTtl(final Integer tokenExplicitMaxTtl) {
+        public Builder withTokenExplicitMaxTtl(final Long tokenExplicitMaxTtl) {
             this.tokenExplicitMaxTtl = tokenExplicitMaxTtl;
             return this;
         }

src/main/java/de/stklcode/jvault/connector/model/response/AppRoleResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.AppRole;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AppRoleResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -6536422219633829177L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/AppRoleSecretResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.AppRoleSecret;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AppRoleSecretResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -2484103304072370585L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/AuthMethodsResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.AuthMethod;
 
+import java.io.Serial;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
@@ -32,6 +33,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AuthMethodsResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -1802724129533405375L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/AuthResponse.java

@@ -19,6 +19,8 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import de.stklcode.jvault.connector.model.response.embedded.AuthData;
 
+import java.io.Serial;
+
 /**
  * Vault response for authentication providing auth info in {@link AuthData} field.
  *
@@ -27,5 +29,6 @@ import de.stklcode.jvault.connector.model.response.embedded.AuthData;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AuthResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = 1628851361067456715L;
 }

src/main/java/de/stklcode/jvault/connector/model/response/CredentialsResponse.java

@@ -18,6 +18,8 @@ package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
+import java.io.Serial;
+
 /**
  * Vault response from credentials lookup. Simple wrapper for data objects containing username and password fields.
  *
@@ -26,6 +28,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class CredentialsResponse extends PlainSecretResponse {
+    @Serial
     private static final long serialVersionUID = -1439692963299045425L;
 
     /**

src/main/java/de/stklcode/jvault/connector/model/response/ErrorResponse.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.util.List;
 import java.util.Objects;
 
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class ErrorResponse implements VaultResponse {
+    @Serial
     private static final long serialVersionUID = -6227368087842549149L;
 
     @JsonProperty("errors")

src/main/java/de/stklcode/jvault/connector/model/response/HealthResponse.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -29,6 +30,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class HealthResponse implements VaultResponse {
+    @Serial
     private static final long serialVersionUID = 8675155916902904516L;
 
     @JsonProperty("cluster_id")

src/main/java/de/stklcode/jvault/connector/model/response/HelpResponse.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -29,6 +30,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class HelpResponse implements VaultResponse {
+    @Serial
     private static final long serialVersionUID = -1152070966642848490L;
 
     @JsonProperty("help")

src/main/java/de/stklcode/jvault/connector/model/response/MetaSecretResponse.java

@@ -21,6 +21,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.SecretWrapper;
 import de.stklcode.jvault.connector.model.response.embedded.VersionMetadata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Collections;
 import java.util.Map;
@@ -34,6 +35,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class MetaSecretResponse extends SecretResponse {
+    @Serial
     private static final long serialVersionUID = -1076542846391240162L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/MetadataResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.SecretMetadata;
 
+import java.io.Serial;
 import java.util.Objects;
 
 
@@ -31,6 +32,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class MetadataResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -3679762333630984679L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/PlainSecretResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.VersionMetadata;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Collections;
 import java.util.Map;
@@ -33,6 +34,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class PlainSecretResponse extends SecretResponse {
+    @Serial
     private static final long serialVersionUID = 3010138542437913023L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/RawDataResponse.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Map;
 import java.util.Objects;
@@ -31,6 +32,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class RawDataResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -319727427792124071L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/SealResponse.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.time.ZonedDateTime;
 import java.util.Objects;
 
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class SealResponse implements VaultResponse {
+    @Serial
     private static final long serialVersionUID = -6000309255473305787L;
 
     @JsonProperty("type")

src/main/java/de/stklcode/jvault/connector/model/response/SecretListResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.SecretListWrapper;
 
+import java.io.Serial;
 import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
@@ -32,8 +33,9 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class SecretListResponse extends VaultDataResponse {
-
+    @Serial
     private static final long serialVersionUID = 8597121175002967213L;
+
     @JsonProperty("data")
     private SecretListWrapper data;
 

src/main/java/de/stklcode/jvault/connector/model/response/SecretResponse.java

@@ -25,6 +25,7 @@ import de.stklcode.jvault.connector.exception.InvalidResponseException;
 import de.stklcode.jvault.connector.model.response.embedded.VersionMetadata;
 
 import java.io.IOException;
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Map;
 
@@ -37,6 +38,7 @@ import java.util.Map;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public abstract class SecretResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = 5198088815871692951L;
 
     /**

src/main/java/de/stklcode/jvault/connector/model/response/SecretVersionResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.VersionMetadata;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class SecretVersionResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = 2748635005258576174L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/TokenResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.TokenData;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class TokenResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = -4341114947980033457L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/TokenRoleResponse.java

@@ -21,6 +21,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.TokenRole;
 import de.stklcode.jvault.connector.model.response.embedded.TokenData;
 
+import java.io.Serial;
 import java.util.Objects;
 
 /**
@@ -31,6 +32,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class TokenRoleResponse extends VaultDataResponse {
+    @Serial
     private static final long serialVersionUID = 5265363857731948626L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/TransitResponse.java

@@ -18,6 +18,7 @@ package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.annotation.JsonSetter;
 
+import java.io.Serial;
 import java.util.Map;
 import java.util.Objects;
 
@@ -29,6 +30,7 @@ import java.util.Objects;
  */
 public class TransitResponse extends VaultDataResponse {
 
+    @Serial
     private static final long serialVersionUID = 6873804240772242771L;
 
     private String ciphertext;

src/main/java/de/stklcode/jvault/connector/model/response/VaultDataResponse.java

@@ -20,6 +20,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import de.stklcode.jvault.connector.model.response.embedded.AuthData;
 import de.stklcode.jvault.connector.model.response.embedded.WrapInfo;
 
+import java.io.Serial;
 import java.util.List;
 import java.util.Objects;
 
@@ -30,6 +31,7 @@ import java.util.Objects;
  * @since 0.1
  */
 public abstract class VaultDataResponse implements VaultResponse {
+    @Serial
     private static final long serialVersionUID = 4787715235558510045L;
 
     @JsonProperty("request_id")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/AuthData.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Map;
@@ -33,6 +34,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AuthData implements Serializable {
+    @Serial
     private static final long serialVersionUID = 5969334512309655317L;
 
     @JsonProperty("client_token")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/AuthMethod.java

@@ -21,6 +21,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonSetter;
 import de.stklcode.jvault.connector.model.AuthBackend;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Map;
 import java.util.Objects;
@@ -34,6 +35,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class AuthMethod implements Serializable {
+    @Serial
     private static final long serialVersionUID = -439987082190917691L;
 
     private AuthBackend type;

src/main/java/de/stklcode/jvault/connector/model/response/embedded/MfaConstraintAny.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Objects;
@@ -31,6 +32,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class MfaConstraintAny implements Serializable {
+    @Serial
     private static final long serialVersionUID = 1226126781813149627L;
 
     @JsonProperty("any")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/MfaMethodId.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 
@@ -30,6 +31,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class MfaMethodId implements Serializable {
+    @Serial
     private static final long serialVersionUID = 691298070242998814L;
 
     @JsonProperty("type")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/MfaRequirement.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Map;
 import java.util.Objects;
@@ -31,6 +32,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class MfaRequirement implements Serializable {
+    @Serial
     private static final long serialVersionUID = -2516941512455319638L;
 
     @JsonProperty("mfa_request_id")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/MountConfig.java

@@ -3,6 +3,8 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Objects;
@@ -15,13 +17,14 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class MountConfig implements Serializable {
-    private static final long serialVersionUID = -8653909672663717792L;
+    @Serial
+    private static final long serialVersionUID = 7241631159224756605L;
 
     @JsonProperty("default_lease_ttl")
-    private Integer defaultLeaseTtl;
+    private Long defaultLeaseTtl;
 
     @JsonProperty("max_lease_ttl")
-    private Integer maxLeaseTtl;
+    private Long maxLeaseTtl;
 
     @JsonProperty("force_no_cache")
     private Boolean forceNoCache;
@@ -56,14 +59,14 @@ public class MountConfig implements Serializable {
     /**
      * @return Default lease TTL
      */
-    public Integer getDefaultLeaseTtl() {
+    public Long getDefaultLeaseTtl() {
         return defaultLeaseTtl;
     }
 
     /**
      * @return Maximum lease TTL
      */
-    public Integer getMaxLeaseTtl() {
+    public Long getMaxLeaseTtl() {
         return maxLeaseTtl;
     }
 

src/main/java/de/stklcode/jvault/connector/model/response/embedded/SecretListWrapper.java

@@ -3,6 +3,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
 import java.util.Objects;
@@ -16,7 +17,9 @@ import java.util.Objects;
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class SecretListWrapper implements Serializable {
 
+    @Serial
     private static final long serialVersionUID = -8777605197063766125L;
+
     @JsonProperty("keys")
     private List<String> keys;
 

src/main/java/de/stklcode/jvault/connector/model/response/embedded/SecretMetadata.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 import java.util.HashMap;
@@ -34,6 +35,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class SecretMetadata implements Serializable {
+    @Serial
     private static final long serialVersionUID = -905059942871916214L;
 
     @JsonProperty("created_time")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/SecretWrapper.java

@@ -3,6 +3,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Map;
 import java.util.Objects;
@@ -15,6 +16,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class SecretWrapper implements Serializable {
+    @Serial
     private static final long serialVersionUID = 8600413181758893378L;
 
     @JsonProperty("data")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/TokenData.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 import java.util.List;
@@ -34,7 +35,8 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class TokenData implements Serializable {
-    private static final long serialVersionUID = -5749716740973138916L;
+    @Serial
+    private static final long serialVersionUID = -4168046151053509784L;
 
     @JsonProperty("accessor")
     private String accessor;
@@ -43,7 +45,7 @@ public final class TokenData implements Serializable {
     private Integer creationTime;
 
     @JsonProperty("creation_ttl")
-    private Integer creationTtl;
+    private Long creationTtl;
 
     @JsonProperty("display_name")
     private String name;
@@ -55,7 +57,7 @@ public final class TokenData implements Serializable {
     private ZonedDateTime expireTime;
 
     @JsonProperty("explicit_max_ttl")
-    private Integer explicitMaxTtl;
+    private Long explicitMaxTtl;
 
     @JsonProperty("id")
     private String id;
@@ -82,7 +84,7 @@ public final class TokenData implements Serializable {
     private boolean renewable;
 
     @JsonProperty("ttl")
-    private Integer ttl;
+    private Long ttl;
 
     @JsonProperty("type")
     private String type;
@@ -104,7 +106,7 @@ public final class TokenData implements Serializable {
     /**
      * @return Creation TTL (in seconds)
      */
-    public Integer getCreationTtl() {
+    public Long getCreationTtl() {
         return creationTtl;
     }
 
@@ -135,7 +137,7 @@ public final class TokenData implements Serializable {
      * @return Explicit maximum TTL
      * @since 0.9
      */
-    public Integer getExplicitMaxTtl() {
+    public Long getExplicitMaxTtl() {
         return explicitMaxTtl;
     }
 
@@ -202,7 +204,7 @@ public final class TokenData implements Serializable {
     /**
      * @return Token TTL (in seconds)
      */
-    public Integer getTtl() {
+    public Long getTtl() {
         return ttl;
     }
 

src/main/java/de/stklcode/jvault/connector/model/response/embedded/UserLockoutConfig.java

@@ -3,6 +3,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.util.Objects;
 
@@ -14,6 +15,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class UserLockoutConfig implements Serializable {
+    @Serial
     private static final long serialVersionUID = -8051060041593140550L;
 
     @JsonProperty("lockout_threshold")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/VersionMetadata.java

@@ -19,6 +19,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 import java.util.HashMap;
@@ -34,6 +35,7 @@ import java.util.Objects;
  */
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class VersionMetadata implements Serializable {
+    @Serial
     private static final long serialVersionUID = 8495687554714216478L;
 
     @JsonProperty("created_time")

src/main/java/de/stklcode/jvault/connector/model/response/embedded/WrapInfo.java

@@ -18,6 +18,7 @@ package de.stklcode.jvault.connector.model.response.embedded;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.io.Serial;
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 import java.util.Objects;
@@ -29,6 +30,7 @@ import java.util.Objects;
  * @since 1.1
  */
 public class WrapInfo implements Serializable {
+    @Serial
     private static final long serialVersionUID = 4864973237090355607L;
 
     @JsonProperty("token")

src/test/java/de/stklcode/jvault/connector/HTTPVaultConnectorIT.java

@@ -52,7 +52,7 @@ import static org.junit.jupiter.api.Assumptions.assumeTrue;
  * @since 0.1
  */
 class HTTPVaultConnectorIT {
-    private static String VAULT_VERSION = "1.19.5";  // The vault version this test is supposed to run against.
+    private static String VAULT_VERSION = "1.20.0";  // The vault version this test is supposed to run against.
     private static final String KEY1 = "E38bkCm0VhUvpdCKGQpcohhD9XmcHJ/2hreOSY019Lho";
     private static final String KEY2 = "O5OHwDleY3IiPdgw61cgHlhsrEm6tVJkrxhF6QAnILd1";
     private static final String KEY3 = "mw7Bm3nbt/UWa/juDjjL2EPQ04kiJ0saC5JEXwJvXYsB";
@@ -862,7 +862,7 @@ class HTTPVaultConnectorIT {
                 .withDefaultPolicy()
                 .withMeta("test", "success")
                 .withMeta("key", "value")
-                    .withTtl(1234)
+                .withTtl(1234L)
                 .build();
             InvalidResponseException e = assertThrows(
                 InvalidResponseException.class,
@@ -1222,7 +1222,7 @@ class HTTPVaultConnectorIT {
         // Write configuration file.
         File configFile = new File(dir, "vault.conf");
         try {
-            Files.write(configFile.toPath(), config.toString().getBytes(UTF_8));
+            Files.writeString(configFile.toPath(), config.toString(), UTF_8);
         } catch (IOException e) {
             throw new IllegalStateException("Unable to generate config file", e);
         }
@@ -1282,10 +1282,8 @@ class HTTPVaultConnectorIT {
 
             return socket.getLocalPort();
         } catch (IOException e) {
-            e.printStackTrace();
+            throw new IllegalStateException("Unable to find a free TCP port", e);
         }
-
-        throw new IllegalStateException("Unable to find a free TCP port");
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/AppRoleTest.java

@@ -42,11 +42,11 @@ class AppRoleTest extends AbstractModelTest<AppRole> {
     private static final String POLICY = "policy";
     private static final String POLICY_2 = "policy2";
     private static final Integer SECRET_ID_NUM_USES = 10;
-    private static final Integer SECRET_ID_TTL = 7200;
+    private static final Long SECRET_ID_TTL = 7200L;
     private static final Boolean LOCAL_SECRET_IDS = false;
-    private static final Integer TOKEN_TTL = 4800;
+    private static final Long TOKEN_TTL = 4800L;
-    private static final Integer TOKEN_MAX_TTL = 9600;
+    private static final Long TOKEN_MAX_TTL = 9600L;
-    private static final Integer TOKEN_EXPLICIT_MAX_TTL = 14400;
+    private static final Long TOKEN_EXPLICIT_MAX_TTL = 14400L;
     private static final Boolean TOKEN_NO_DEFAULT_POLICY = false;
     private static final Integer TOKEN_NUM_USES = 42;
     private static final Integer TOKEN_PERIOD = 1234;

src/test/java/de/stklcode/jvault/connector/model/TokenRoleTest.java

@@ -59,7 +59,7 @@ class TokenRoleTest extends AbstractModelTest<TokenRole> {
     private static final String TOKEN_BOUND_CIDR_2 = "198.51.100.0/24";
     private static final String TOKEN_BOUND_CIDR_3 = "203.0.113.0/24";
     private static final List<String> TOKEN_BOUND_CIDRS = Arrays.asList(TOKEN_BOUND_CIDR_2, TOKEN_BOUND_CIDR_1);
-    private static final Integer TOKEN_EXPLICIT_MAX_TTL = 1234;
+    private static final Long TOKEN_EXPLICIT_MAX_TTL = 1234L;
     private static final Boolean TOKEN_NO_DEFAULT_POLICY = false;
     private static final Integer TOKEN_NUM_USES = 5;
     private static final Integer TOKEN_PERIOD = 2345;

src/test/java/de/stklcode/jvault/connector/model/TokenTest.java

@@ -35,8 +35,8 @@ class TokenTest extends AbstractModelTest<Token> {
     private static final String DISPLAY_NAME = "display-name";
     private static final Boolean NO_PARENT = false;
     private static final Boolean NO_DEFAULT_POLICY = false;
-    private static final Integer TTL = 123;
+    private static final Long TTL = 123L;
-    private static final Integer EXPLICIT_MAX_TTL = 456;
+    private static final Long EXPLICIT_MAX_TTL = 456L;
     private static final Integer NUM_USES = 4;
     private static final List<String> POLICIES = new ArrayList<>();
     private static final String POLICY = "policy";

src/test/java/de/stklcode/jvault/connector/model/response/AppRoleResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.AppRole;
 import org.junit.jupiter.api.Test;
@@ -32,9 +31,9 @@ import static org.junit.jupiter.api.Assertions.*;
  * @since 0.6.2
  */
 class AppRoleResponseTest extends AbstractModelTest<AppRoleResponse> {
-    private static final Integer ROLE_TOKEN_TTL = 1200;
+    private static final Long ROLE_TOKEN_TTL = 1200L;
-    private static final Integer ROLE_TOKEN_MAX_TTL = 1800;
+    private static final Long ROLE_TOKEN_MAX_TTL = 1800L;
-    private static final Integer ROLE_SECRET_TTL = 600;
+    private static final Long ROLE_SECRET_TTL = 600L;
     private static final Integer ROLE_SECRET_NUM_USES = 40;
     private static final String ROLE_POLICY = "default";
     private static final Integer ROLE_PERIOD = 0;
@@ -67,12 +66,10 @@ class AppRoleResponseTest extends AbstractModelTest<AppRoleResponse> {
 
     @Override
     protected AppRoleResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, AppRoleResponse.class);
+            () -> objectMapper.readValue(RES_JSON, AppRoleResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/AuthMethodsResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.AuthBackend;
 import de.stklcode.jvault.connector.model.response.embedded.AuthMethod;
@@ -45,9 +44,9 @@ class AuthMethodsResponseTest extends AbstractModelTest<AuthMethodsResponse> {
     private static final String TK_UUID = "32ea9681-6bd6-6cec-eec3-d11260ba9741";
     private static final String TK_ACCESSOR = "auth_token_ac0dd95a";
     private static final String TK_DESCR = "token based credentials";
-    private static final Integer TK_LEASE_TTL = 0;
+    private static final Long TK_LEASE_TTL = 0L;
     private static final Boolean TK_FORCE_NO_CACHE = false;
-    private static final Integer TK_MAX_LEASE_TTL = 0;
+    private static final Long TK_MAX_LEASE_TTL = 0L;
     private static final String TK_TOKEN_TYPE = "default-service";
     private static final String TK_RUNNING_PLUGIN_VERSION = "v1.15.3+builtin.vault";
 
@@ -90,12 +89,10 @@ class AuthMethodsResponseTest extends AbstractModelTest<AuthMethodsResponse> {
 
     @Override
     protected AuthMethodsResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, AuthMethodsResponse.class);
+            () -> objectMapper.readValue(RES_JSON, AuthMethodsResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/AuthResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.response.embedded.AuthData;
 import de.stklcode.jvault.connector.model.response.embedded.MfaConstraintAny;
@@ -101,12 +100,10 @@ class AuthResponseTest extends AbstractModelTest<AuthResponse> {
 
     @Override
     protected AuthResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, AuthResponse.class);
+            () -> objectMapper.readValue(RES_JSON, AuthResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     @Test

src/test/java/de/stklcode/jvault/connector/model/response/CredentialsResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -49,12 +48,10 @@ class CredentialsResponseTest extends AbstractModelTest<CredentialsResponse> {
 
     @Override
     protected CredentialsResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(JSON, CredentialsResponse.class);
+            () -> objectMapper.readValue(JSON, CredentialsResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/ErrorResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -42,12 +41,10 @@ class ErrorResponseTest extends AbstractModelTest<ErrorResponse> {
 
     @Override
     protected ErrorResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(JSON, ErrorResponse.class);
+            () -> objectMapper.readValue(JSON, ErrorResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/HealthResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -67,12 +66,10 @@ class HealthResponseTest extends AbstractModelTest<HealthResponse> {
 
     @Override
     protected HealthResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, HealthResponse.class);
+            () -> objectMapper.readValue(RES_JSON, HealthResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/HelpResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -38,12 +37,10 @@ class HelpResponseTest extends AbstractModelTest<HelpResponse> {
 
     @Override
     protected HelpResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(JSON, HelpResponse.class);
+            () -> objectMapper.readValue(JSON, HelpResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/MetaSecretResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -95,12 +94,10 @@ class MetaSecretResponseTest extends AbstractModelTest<MetaSecretResponse> {
 
     @Override
     protected MetaSecretResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(SECRET_JSON_V2, MetaSecretResponse.class);
+            () -> objectMapper.readValue(SECRET_JSON_V2, MetaSecretResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/MetadataResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -80,12 +79,10 @@ class MetadataResponseTest extends AbstractModelTest<MetadataResponse> {
 
     @Override
     protected MetadataResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(META_JSON, MetadataResponse.class);
+            () -> objectMapper.readValue(META_JSON, MetadataResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/PlainSecretResponseTest.java

@@ -17,7 +17,6 @@
 package de.stklcode.jvault.connector.model.response;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.exception.InvalidResponseException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
@@ -60,12 +59,10 @@ class PlainSecretResponseTest extends AbstractModelTest<PlainSecretResponse> {
 
     @Override
     protected PlainSecretResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(SECRET_JSON, PlainSecretResponse.class);
+            () -> objectMapper.readValue(SECRET_JSON, PlainSecretResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/SealResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -83,12 +82,10 @@ class SealResponseTest extends AbstractModelTest<SealResponse> {
 
     @Override
     protected SealResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_UNSEALED, SealResponse.class);
+            () -> objectMapper.readValue(RES_UNSEALED, SealResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/SecretListResponseTest.java

@@ -16,13 +16,13 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
 import java.util.List;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 /**
  * JUnit Test for {@link SecretListResponse} model.
@@ -52,12 +52,10 @@ class SecretListResponseTest extends AbstractModelTest<SecretListResponse> {
 
     @Override
     protected SecretListResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(JSON, SecretListResponse.class);
+            () -> objectMapper.readValue(JSON, SecretListResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/SecretVersionResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -48,12 +47,10 @@ class SecretVersionResponseTest extends AbstractModelTest<SecretVersionResponse>
 
     @Override
     protected SecretVersionResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(META_JSON, SecretVersionResponse.class);
+            () -> objectMapper.readValue(META_JSON, SecretVersionResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/TokenResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import de.stklcode.jvault.connector.model.response.embedded.TokenData;
 import org.junit.jupiter.api.Test;
@@ -35,8 +34,8 @@ import static org.junit.jupiter.api.Assertions.*;
  */
 class TokenResponseTest extends AbstractModelTest<TokenResponse> {
     private static final Integer TOKEN_CREATION_TIME = 1457533232;
-    private static final Integer TOKEN_TTL = 2764800;
+    private static final Long TOKEN_TTL = 2764800L;
-    private static final Integer TOKEN_EXPLICIT_MAX_TTL = 0;
+    private static final Long TOKEN_EXPLICIT_MAX_TTL = 0L;
     private static final String TOKEN_DISPLAY_NAME = "token";
     private static final String TOKEN_META_KEY = "foo";
     private static final String TOKEN_META_VALUE = "bar";
@@ -47,7 +46,7 @@ class TokenResponseTest extends AbstractModelTest<TokenResponse> {
     private static final String TOKEN_POLICY_1 = "default";
     private static final String TOKEN_POLICY_2 = "web";
     private static final Boolean RES_RENEWABLE = false;
-    private static final Integer RES_TTL = 2591976;
+    private static final Long RES_TTL = 2591976L;
     private static final Integer RES_LEASE_DURATION = 0;
     private static final String TOKEN_ACCESSOR = "VKvzT2fKHFsZFUus9LyoXCvu";
     private static final String TOKEN_ENTITY_ID = "7d2e3179-f69b-450c-7179-ac8ee8bd8ca9";
@@ -96,12 +95,10 @@ class TokenResponseTest extends AbstractModelTest<TokenResponse> {
 
     @Override
     protected TokenResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, TokenResponse.class);
+            () -> objectMapper.readValue(RES_JSON, TokenResponse.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**

src/test/java/de/stklcode/jvault/connector/model/response/TransitResponseTest.java

@@ -16,7 +16,6 @@
 
 package de.stklcode.jvault.connector.model.response;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -39,19 +38,17 @@ class TransitResponseTest extends AbstractModelTest<TransitResponse> {
 
     @Override
     protected TransitResponse createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(
+            () -> objectMapper.readValue(
                 json(
                     "\"ciphertext\": \"" + CIPHERTEXT + "\", " +
                         "\"plaintext\": \"" + PLAINTEXT + "\", " +
                         "\"sum\": \"" + SUM + "\""
                 ),
                 TransitResponse.class
+            ),
+            "Creation of full model failed"
         );
-        } catch (JsonProcessingException e) {
-            fail("Creation of full model failed", e);
-            return null;
-        }
     }
 
     @Test

src/test/java/de/stklcode/jvault/connector/model/response/embedded/MountConfigTest.java

@@ -1,6 +1,5 @@
 package de.stklcode.jvault.connector.model.response.embedded;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import de.stklcode.jvault.connector.model.AbstractModelTest;
 import org.junit.jupiter.api.Test;
 
@@ -14,8 +13,8 @@ import static org.junit.jupiter.api.Assertions.*;
  * @author Stefan Kalscheuer
  */
 class MountConfigTest extends AbstractModelTest<MountConfig> {
-    private static final Integer DEFAULT_LEASE_TTL = 1800;
+    private static final Long DEFAULT_LEASE_TTL = 1800L;
-    private static final Integer MAX_LEASE_TTL = 3600;
+    private static final Long MAX_LEASE_TTL = 3600L;
     private static final Boolean FORCE_NO_CACHE = false;
     private static final String TOKEN_TYPE = "default-service";
     private static final String AUDIT_NON_HMAC_REQ_KEYS_1 = "req1";
@@ -62,12 +61,10 @@ class MountConfigTest extends AbstractModelTest<MountConfig> {
 
     @Override
     protected MountConfig createFull() {
-        try {
+        return assertDoesNotThrow(
-            return objectMapper.readValue(RES_JSON, MountConfig.class);
+            () -> objectMapper.readValue(RES_JSON, MountConfig.class),
-        } catch (JsonProcessingException e) {
+            "Creation of full model instance failed"
-            fail("Creation of full model instance failed", e);
+        );
-            return null;
-        }
     }
 
     /**