use pre-sized maps for fixed-size payloads

.drone.yml

@@ -25,12 +25,12 @@ steps:
   - name: unit-integration-tests
     image: maven:3-jdk-11
     environment:
-      VAULT_VERSION: 1.6.1
+      VAULT_VERSION: 1.6.2
     commands:
-      - curl -s -o vault_1.6.1_linux_amd64.zip https://releases.hashicorp.com/vault/1.6.1/vault_1.6.1_linux_amd64.zip
-      - curl -s https://releases.hashicorp.com/vault/1.6.1/vault_1.6.1_SHA256SUMS | grep linux_amd64 | sha256sum -c
-      - unzip vault_1.6.1_linux_amd64.zip
-      - rm vault_1.6.1_linux_amd64.zip
+      - curl -s -o vault_1.6.2_linux_amd64.zip https://releases.hashicorp.com/vault/1.6.2/vault_1.6.2_linux_amd64.zip
+      - curl -s https://releases.hashicorp.com/vault/1.6.2/vault_1.6.2_SHA256SUMS | grep linux_amd64 | sha256sum -c
+      - unzip vault_1.6.2_linux_amd64.zip
+      - rm vault_1.6.2_linux_amd64.zip
       - mv vault /bin/
       - mvn -B resources:testResources compiler:testCompile surefire:test
     when:

.travis.yml

@@ -7,7 +7,7 @@ addons:
       secure: "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"
 
 env:
-  - PATH=$PATH:. VAULT_VERSION=1.6.1 ANALYSIS=false
+  - PATH=$PATH:. VAULT_VERSION=1.6.2 ANALYSIS=false
 
 cache:
   directories:
@@ -18,7 +18,7 @@ jobs:
   include:
     - jdk: openjdk8
     - jdk: openjdk11
-      env: PATH=$PATH:. VAULT_VERSION=1.6.1 ANALYSIS=true
+      env: PATH=$PATH:. VAULT_VERSION=1.6.2 ANALYSIS=true
     - jdk: openjdk15
 
 before_script:

CHANGELOG.md

@@ -1,3 +1,11 @@
+## unreleased
+
+### Improvements
+* Use pre-sized map objects for fixed-size payloads
+
+### Test
+* Tested against Vault 1.6.2
+
 ## 0.9.2 (2021-01-24)
 
 ### Fixes

README.md

@@ -32,7 +32,7 @@ Java Vault Connector is a connector library for [Vault](https://www.vaultproject
     * SQL secret handling
     * KV v1 and v2 support
 * Connector Factory with builder pattern
-* Tested against Vault 1.6.1
+* Tested against Vault 1.6.2
 
 
 ## Maven Artifact

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>de.stklcode.jvault</groupId>
     <artifactId>jvault-connector</artifactId>
-    <version>0.9.2</version>
+    <version>0.9.3-SNAPSHOPT</version>
 
     <packaging>jar</packaging>
 

src/main/java/de/stklcode/jvault/connector/HTTPVaultConnector.java

@@ -25,11 +25,15 @@ import de.stklcode.jvault.connector.model.response.*;
 import de.stklcode.jvault.connector.model.response.embedded.AuthMethod;
 
 import java.security.cert.X509Certificate;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
 
+import static java.util.Collections.emptyMap;
+import static java.util.Collections.singletonMap;
+
 /**
  * Vault Connector implementation using Vault's HTTP API.
  *
@@ -222,17 +226,17 @@ public class HTTPVaultConnector implements VaultConnector {
 
     @Override
     public final SealResponse sealStatus() throws VaultConnectorException {
-        return request.get(PATH_SEAL_STATUS, new HashMap<>(), token, SealResponse.class);
+        return request.get(PATH_SEAL_STATUS, emptyMap(), token, SealResponse.class);
     }
 
     @Override
     public final void seal() throws VaultConnectorException {
-        request.put(PATH_SEAL, new HashMap<>(), token);
+        request.put(PATH_SEAL, emptyMap(), token);
     }
 
     @Override
     public final SealResponse unseal(final String key, final Boolean reset) throws VaultConnectorException {
-        Map<String, String> param = new HashMap<>();
+        Map<String, String> param = new HashMap<>(2, 1);
         param.put("key", key);
         if (reset != null) {
             param.put("reset", reset.toString());
@@ -244,7 +248,7 @@ public class HTTPVaultConnector implements VaultConnector {
     @Override
     public HealthResponse getHealth() throws VaultConnectorException {
         /* Force status code to be 200, so we don't need to modify the request sequence. */
-        Map<String, String> param = new HashMap<>();
+        Map<String, String> param = new HashMap<>(3, 1);
         param.put("standbycode", "200");    // Default: 429.
         param.put("sealedcode", "200");     // Default: 503.
         param.put("uninitcode", "200");     // Default: 501.
@@ -260,7 +264,7 @@ public class HTTPVaultConnector implements VaultConnector {
     @Override
     public final List<AuthBackend> getAuthBackends() throws VaultConnectorException {
         /* Issue request and parse response */
-        AuthMethodsResponse amr = request.get(PATH_AUTH, new HashMap<>(), token, AuthMethodsResponse.class);
+        AuthMethodsResponse amr = request.get(PATH_AUTH, emptyMap(), token, AuthMethodsResponse.class);
 
         return amr.getSupportedMethods().values().stream().map(AuthMethod::getType).collect(Collectors.toList());
     }
@@ -270,7 +274,7 @@ public class HTTPVaultConnector implements VaultConnector {
         /* set token */
         this.token = token;
         this.tokenTTL = 0;
-        TokenResponse res = request.post(PATH_TOKEN + PATH_LOOKUP, new HashMap<>(), token, TokenResponse.class);
+        TokenResponse res = request.post(PATH_TOKEN + PATH_LOOKUP, emptyMap(), token, TokenResponse.class);
         authorized = true;
 
         return res;
@@ -279,15 +283,14 @@ public class HTTPVaultConnector implements VaultConnector {
     @Override
     public final AuthResponse authUserPass(final String username, final String password)
             throws VaultConnectorException {
-        final Map<String, String> payload = new HashMap<>();
-        payload.put("password", password);
+        final Map<String, String> payload = singletonMap("password", password);
         return queryAuth(PATH_AUTH_USERPASS + username, payload);
     }
 
     @Override
     @Deprecated
     public final AuthResponse authAppId(final String appID, final String userID) throws VaultConnectorException {
-        final Map<String, String> payload = new HashMap<>();
+        final Map<String, String> payload = new HashMap<>(2, 1);
         payload.put("app_id", appID);
         payload.put("user_id", userID);
         return queryAuth(PATH_AUTH_APPID + "login", payload);
@@ -295,7 +298,7 @@ public class HTTPVaultConnector implements VaultConnector {
 
     @Override
     public final AuthResponse authAppRole(final String roleID, final String secretID) throws VaultConnectorException {
-        final Map<String, String> payload = new HashMap<>();
+        final Map<String, String> payload = new HashMap<>(2, 1);
         payload.put("role_id", roleID);
         if (secretID != null) {
             payload.put("secret_id", secretID);
@@ -328,7 +331,7 @@ public class HTTPVaultConnector implements VaultConnector {
     public final boolean registerAppId(final String appID, final String policy, final String displayName)
             throws VaultConnectorException {
         requireAuth();
-        Map<String, String> payload = new HashMap<>();
+        Map<String, String> payload = new HashMap<>(2, 1);
         payload.put("value", policy);
         payload.put("display_name", displayName);
 
@@ -342,11 +345,13 @@ public class HTTPVaultConnector implements VaultConnector {
     @Deprecated
     public final boolean registerUserId(final String appID, final String userID) throws VaultConnectorException {
         requireAuth();
-        Map<String, String> payload = new HashMap<>();
-        payload.put("value", appID);
 
         /* Issue request and expect code 204 with empty response */
-        request.postWithoutResponse(PATH_AUTH_APPID + "map/user-id/" + userID, payload, token);
+        request.postWithoutResponse(
+                PATH_AUTH_APPID + "map/user-id/" + userID,
+                singletonMap("value", appID),
+                token
+        );
 
         return true;
     }
@@ -366,7 +371,12 @@ public class HTTPVaultConnector implements VaultConnector {
     public final AppRoleResponse lookupAppRole(final String roleName) throws VaultConnectorException {
         requireAuth();
         /* Request HTTP response and parse Secret */
-        return request.get(String.format(PATH_AUTH_APPROLE_ROLE, roleName, ""), new HashMap<>(), token, AppRoleResponse.class);
+        return request.get(
+                String.format(PATH_AUTH_APPROLE_ROLE, roleName, ""),
+                emptyMap(),
+                token,
+                AppRoleResponse.class
+        );
     }
 
     @Override
@@ -385,7 +395,7 @@ public class HTTPVaultConnector implements VaultConnector {
         /* Issue request, parse response and extract Role ID */
         return request.get(
                 String.format(PATH_AUTH_APPROLE_ROLE, roleName, "/role-id"),
-                new HashMap<>(),
+                emptyMap(),
                 token,
                 RawDataResponse.class
         ).getData().get("role_id").toString();
@@ -394,12 +404,13 @@ public class HTTPVaultConnector implements VaultConnector {
     @Override
     public final boolean setAppRoleID(final String roleName, final String roleID) throws VaultConnectorException {
         requireAuth();
-        /* Request HTTP response and parse Secret */
-        Map<String, String> payload = new HashMap<>();
-        payload.put("role_id", roleID);
 
         /* Issue request and expect code 204 with empty response */
-        request.postWithoutResponse(String.format(PATH_AUTH_APPROLE_ROLE, roleName, "/role-id"), payload, token);
+        request.postWithoutResponse(
+                String.format(PATH_AUTH_APPROLE_ROLE, roleName, "/role-id"),
+                singletonMap("role_id", roleID),
+                token
+        );
 
         return true;
     }
@@ -457,7 +468,13 @@ public class HTTPVaultConnector implements VaultConnector {
     public final List<String> listAppRoles() throws VaultConnectorException {
         requireAuth();
 
-        SecretListResponse secrets = request.get(PATH_AUTH_APPROLE + "role?list=true", new HashMap<>(), token, SecretListResponse.class);
+        SecretListResponse secrets = request.get(
+                PATH_AUTH_APPROLE + "role?list=true",
+                emptyMap(),
+                token,
+                SecretListResponse.class
+        );
+
         return secrets.getKeys();
     }
 
@@ -467,7 +484,7 @@ public class HTTPVaultConnector implements VaultConnector {
 
         SecretListResponse secrets = request.get(
                 String.format(PATH_AUTH_APPROLE_ROLE, roleName, "/secret-id?list=true"),
-                new HashMap<>(),
+                emptyMap(),
                 token,
                 SecretListResponse.class
         );
@@ -479,14 +496,14 @@ public class HTTPVaultConnector implements VaultConnector {
     public final SecretResponse read(final String key) throws VaultConnectorException {
         requireAuth();
         /* Issue request and parse secret response */
-        return request.get(key, new HashMap<>(), token, SecretResponse.class);
+        return request.get(key, emptyMap(), token, SecretResponse.class);
     }
 
     @Override
     public final SecretResponse readSecretVersion(final String mount, final String key, final Integer version) throws VaultConnectorException {
         requireAuth();
         /* Request HTTP response and parse secret metadata */
-        Map<String, String> args = new HashMap<>();
+        Map<String, String> args = new HashMap<>(1, 1);
         if (version != null) {
             args.put("version", version.toString());
         }
@@ -499,14 +516,14 @@ public class HTTPVaultConnector implements VaultConnector {
         requireAuth();
 
         /* Request HTTP response and parse secret metadata */
-        return request.get(mount + PATH_METADATA + key, new HashMap<>(), token, MetadataResponse.class);
+        return request.get(mount + PATH_METADATA + key, emptyMap(), token, MetadataResponse.class);
     }
 
     @Override
     public void updateSecretMetadata(final String mount, final String key, final Integer maxVersions, final boolean casRequired) throws VaultConnectorException {
         requireAuth();
 
-        Map<String, Object> payload = new HashMap<>();
+        Map<String, Object> payload = new HashMap<>(2, 1);
         if (maxVersions != null) {
             payload.put("max_versions", maxVersions);
         }
@@ -524,12 +541,12 @@ public class HTTPVaultConnector implements VaultConnector {
         }
 
         // Add CAS value to options map if present.
-        Map<String, Object> options = new HashMap<>();
+        Map<String, Object> options = new HashMap<>(1, 1);
         if (cas != null) {
             options.put("cas", cas);
         }
 
-        Map<String, Object> payload = new HashMap<>();
+        Map<String, Object> payload = new HashMap<>(2, 1);
         payload.put("data", data);
         payload.put("options", options);
 
@@ -541,7 +558,7 @@ public class HTTPVaultConnector implements VaultConnector {
     public final List<String> list(final String path) throws VaultConnectorException {
         requireAuth();
 
-        SecretListResponse secrets = request.get(path + "/?list=true", new HashMap<>(), token, SecretListResponse.class);
+        SecretListResponse secrets = request.get(path + "/?list=true", emptyMap(), token, SecretListResponse.class);
 
         return secrets.getKeys();
     }
@@ -559,7 +576,7 @@ public class HTTPVaultConnector implements VaultConnector {
 
         // If options are given, split payload in two parts.
         if (options != null) {
-            Map<String, Object> payloadMap = new HashMap<>();
+            Map<String, Object> payloadMap = new HashMap<>(2, 1);
             payloadMap.put("data", data);
             payloadMap.put("options", options);
             payload = payloadMap;
@@ -616,8 +633,7 @@ public class HTTPVaultConnector implements VaultConnector {
         requireAuth();
 
         /* Request HTTP response and expect empty result */
-        Map<String, Object> payload = new HashMap<>();
-        payload.put("versions", versions);
+        Map<String, Object> payload = singletonMap("versions", versions);
 
         /* Issue request and expect code 204 with empty response */
         request.postWithoutResponse(mount + pathPart + key, payload, token);
@@ -628,14 +644,14 @@ public class HTTPVaultConnector implements VaultConnector {
         requireAuth();
 
         /* Issue request and expect code 204 with empty response */
-        request.putWithoutResponse(PATH_REVOKE + leaseID, new HashMap<>(), token);
+        request.putWithoutResponse(PATH_REVOKE + leaseID, emptyMap(), token);
     }
 
     @Override
     public final SecretResponse renew(final String leaseID, final Integer increment) throws VaultConnectorException {
         requireAuth();
 
-        Map<String, String> payload = new HashMap<>();
+        Map<String, String> payload = new HashMap<>(2, 1);
         payload.put("lease_id", leaseID);
         if (increment != null) {
             payload.put("increment", increment.toString());
@@ -694,9 +710,12 @@ public class HTTPVaultConnector implements VaultConnector {
         requireAuth();
 
         /* Request HTTP response and parse Secret */
-        Map<String, String> param = new HashMap<>();
-        param.put("token", token);
-        return request.get(PATH_TOKEN + PATH_LOOKUP, param, token, TokenResponse.class);
+        return request.get(
+                PATH_TOKEN + PATH_LOOKUP,
+                singletonMap("token", token),
+                token,
+                TokenResponse.class
+        );
     }
 
     @Override
@@ -720,7 +739,7 @@ public class HTTPVaultConnector implements VaultConnector {
         requireAuth();
 
         // Request HTTP response and parse response.
-        return request.get(PATH_TOKEN + PATH_ROLES + "/" + name, new HashMap<>(), token, TokenRoleResponse.class);
+        return request.get(PATH_TOKEN + PATH_ROLES + "/" + name, emptyMap(), token, TokenRoleResponse.class);
     }
 
     @Override

src/main/java/de/stklcode/jvault/connector/VaultConnector.java

@@ -22,10 +22,7 @@ import de.stklcode.jvault.connector.model.*;
 import de.stklcode.jvault.connector.model.response.*;
 
 import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 /**
  * Vault Connector interface.
@@ -611,9 +608,7 @@ public interface VaultConnector extends AutoCloseable, Serializable {
      * @since 0.5.0
      */
     default void write(final String key, final String value) throws VaultConnectorException {
-        Map<String, Object> param = new HashMap<>();
-        param.put("value", value);
-        write(key, param);
+        write(key, Collections.singletonMap("value", value));
     }
 
     /**
@@ -649,9 +644,7 @@ public interface VaultConnector extends AutoCloseable, Serializable {
      * @throws VaultConnectorException on error
      */
     default void writeSecret(final String key, final String value) throws VaultConnectorException {
-        Map<String, Object> param = new HashMap<>();
-        param.put("value", value);
-        writeSecret(key, param);
+        writeSecret(key, Collections.singletonMap("value", value));
     }
 
     /**

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

@@ -40,7 +40,7 @@ public final class AppRoleResponse extends VaultDataResponse {
         ObjectMapper mapper = new ObjectMapper();
         try {
             /* null empty strings on list objects */
-            Map<String, Object> filteredData = new HashMap<>();
+            Map<String, Object> filteredData = new HashMap<>(data.size(), 1);
             data.forEach((k, v) -> {
                 if (!(v instanceof String && ((String) v).isEmpty())) {
                     filteredData.put(k, v);

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

@@ -40,7 +40,7 @@ public final class AppRoleSecretResponse extends VaultDataResponse {
         ObjectMapper mapper = new ObjectMapper();
         try {
             /* null empty strings on list objects */
-            Map<String, Object> filteredData = new HashMap<>();
+            Map<String, Object> filteredData = new HashMap<>(data.size(), 1);
             data.forEach((k, v) -> {
                 if (!(v instanceof String && ((String) v).isEmpty())) {
                     filteredData.put(k, v);

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

@@ -22,7 +22,7 @@ import de.stklcode.jvault.connector.exception.InvalidResponseException;
 import de.stklcode.jvault.connector.model.response.embedded.VersionMetadata;
 
 import java.io.IOException;
-import java.util.HashMap;
+import java.util.Collections;
 import java.util.Map;
 
 /**
@@ -66,7 +66,7 @@ public class SecretResponse extends VaultDataResponse {
      */
     public final Map<String, Object> getData() {
         if (data == null) {
-            return new HashMap<>();
+            return Collections.emptyMap();
         }
         return data;
     }

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

@@ -53,7 +53,7 @@ import static org.junit.jupiter.api.Assumptions.assumeTrue;
  */
 @Tag("online")
 class HTTPVaultConnectorTest {
-    private static String VAULT_VERSION = "1.6.1";  // the vault version this test is supposed to run against
+    private static String VAULT_VERSION = "1.6.2";  // 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";