[core] RESTCatalog refactor RESTCatalogServer and add test

docs/content/spark/sql-ddl.md

@@ -116,6 +116,50 @@ spark-sql ... \
 
 ```
 
+```sql
+USE paimon.default;
+```
+#### Creating REST Catalog
+
+By using the Paimon REST catalog, changes to the catalog will be directly stored in remote server.
+
+##### bear token
+```bash
+spark-sql ... \
+    --conf spark.sql.catalog.paimon=org.apache.paimon.spark.SparkCatalog \
+    --conf spark.sql.catalog.paimon.metastore=rest \
+    --conf spark.sql.catalog.paimon.uri=<catalog server url> \
+    --conf spark.sql.catalog.paimon.token.provider=bear \
+    --conf spark.sql.catalog.paimon.token=<token>
+
+```
+
+##### dlf ak
+```bash
+spark-sql ... \
+    --conf spark.sql.catalog.paimon=org.apache.paimon.spark.SparkCatalog \
+    --conf spark.sql.catalog.paimon.metastore=rest \
+    --conf spark.sql.catalog.paimon.uri=<catalog server url> \
+    --conf spark.sql.catalog.paimon.token.provider=dlf \
+    --conf spark.sql.catalog.paimon.dlf.accessKeyId=<accessKeyId> \
+    --conf spark.sql.catalog.paimon.dlf.accessKeySecret=<accessKeySecret>
+
+```
+
+##### dlf sts token
+```bash
+spark-sql ... \
+    --conf spark.sql.catalog.paimon=org.apache.paimon.spark.SparkCatalog \
+    --conf spark.sql.catalog.paimon.metastore=rest \
+    --conf spark.sql.catalog.paimon.uri=<catalog server url> \
+    --conf spark.sql.catalog.paimon.token.provider=dlf \
+    --conf spark.sql.catalog.paimon.dlf.accessKeyId=<accessKeyId> \
+    --conf spark.sql.catalog.paimon.dlf.accessKeySecret=<accessKeySecret> \
+    --conf spark.sql.catalog.paimon.dlf.securityToken=<securityToken> 
+
+
+```
+
 ```sql
 USE paimon.default;
 ```

paimon-core/src/test/java/org/apache/paimon/rest/DataTokenProvider.java

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.paimon.rest;
+
+import org.testcontainers.shaded.com.google.common.collect.ImmutableMap;
+
+import java.util.Map;
+
+/** Refresh data token in test mode. */
+public class DataTokenProvider {
+
+    private Map<String, String> token;
+    private long expiresAtMillis;
+
+    public DataTokenProvider(Map<String, String> token, long expiresAtMillis) {
+        this.token = token;
+        this.expiresAtMillis = expiresAtMillis;
+    }
+
+    public void setExpiresAtMillis(long expiresAtMillis) {
+        this.expiresAtMillis = expiresAtMillis;
+    }
+
+    public Map<String, String> getToken() {
+        return token;
+    }
+
+    public long getExpiresAtMillis() {
+        return expiresAtMillis;
+    }
+
+    public void setToken(Map<String, String> token) {
+        this.token = token;
+    }
+
+    public void refresh() {
+        this.token =
+                ImmutableMap.of(
+                        "ak",
+                        "ak-" + System.currentTimeMillis(),
+                        "sk",
+                        "sk-" + System.currentTimeMillis());
+        this.expiresAtMillis = System.currentTimeMillis();
+    }
+}