feat: Add dynamic endpoint resolution and region management

- Introduced dynamic endpoint resolution via `Endpoint.getContentstackEndpoint()`
- Added convenience method `Contentstack.Builder.setRegion(String)` for region targeting
- Implemented static proxy methods for ad-hoc URL resolution in `Contentstack`
- Added `Contentstack.refreshRegions()` to refresh regions registry from live source
- Bundled `regions.json` in JAR and auto-refreshed during build
- Added public accessors `Contentstack.getHost()` and `Contentstack.getBaseUrl()`
- Created `Endpoint` class to manage endpoint resolution and caching
- Implemented tests for endpoint resolution and region management

Author: reeshika-h

changelog.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## v1.12.0
+
+### Jun 05, 2026
+
+- Feature: Dynamic endpoint resolution via `Endpoint.getContentstackEndpoint()` backed by the Contentstack Regions Registry (`https://artifacts.contentstack.com/regions.json`). Resolves the correct API URL for any of the 7 supported regions (NA, EU, AU, Azure NA, Azure EU, GCP NA, GCP EU) and 18 service keys without hardcoding host strings.
+- Feature: `Contentstack.Builder.setRegion(String)` — convenience method to target a region directly (e.g. `.setRegion("eu")`), automatically resolving the correct Content Management API host.
+- Feature: `Contentstack.getContentstackEndpoint(region, service)` and `Contentstack.getContentstackEndpoints(region)` static proxy methods for ad-hoc URL resolution.
+- Feature: `Contentstack.refreshRegions()` — forces a live download of the regions registry and refreshes the in-memory cache, so newly published regions or service URLs are available without upgrading the SDK.
+- Feature: `regions.json` bundled in the JAR and auto-refreshed at build time via `scripts/download-regions.sh` (invoked on the Maven `generate-resources` phase).
+- Feature: `Contentstack.getHost()` and `Contentstack.getBaseUrl()` public accessors on the client instance.
+
 ## v1.11.2
 
 ### Jun 01, 2026

pom.xml

@@ -7,7 +7,7 @@
     <artifactId>cms</artifactId>
     <packaging>jar</packaging>
     <name>contentstack-management-java</name>
-    <version>1.11.2</version>
+    <version>1.12.0</version>
     <description>Contentstack Java Management SDK for Content Management API, Contentstack is a headless CMS with an
         API-first approach
     </description>
@@ -278,6 +278,26 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>3.1.0</version>
+                <executions>
+                    <execution>
+                        <id>download-regions</id>
+                        <phase>generate-resources</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>bash</executable>
+                            <arguments>
+                                <argument>${project.basedir}/scripts/download-regions.sh</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>

scripts/download-regions.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+#
+# Downloads the Contentstack regions registry from the official source and
+# saves it to src/main/resources/regions.json.
+#
+# Invoked automatically by Maven on the generate-resources phase, and
+# manually via: bash scripts/download-regions.sh
+#
+# Requires: curl (preferred) or wget as fallback
+
+set -euo pipefail
+
+URL="https://artifacts.contentstack.com/regions.json"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DEST="${SCRIPT_DIR}/../src/main/resources/regions.json"
+DIR="$(dirname "$DEST")"
+
+mkdir -p "$DIR"
+
+data=""
+
+# --- Attempt 1: curl (preferred) --------------------------------------------
+if command -v curl &>/dev/null; then
+    data=$(curl --silent --fail --location --max-time 30 "$URL") || data=""
+fi
+
+# --- Attempt 2: wget fallback -----------------------------------------------
+if [[ -z "$data" ]] && command -v wget &>/dev/null; then
+    data=$(wget --quiet --timeout=30 -O - "$URL") || data=""
+fi
+
+# --- Validate and write ------------------------------------------------------
+if [[ -z "$data" ]]; then
+    echo "contentstack/cms: Warning — could not download regions.json." >&2
+    echo "  The SDK will attempt to download it at runtime on first use." >&2
+    exit 0  # non-fatal: runtime fallback in Endpoint.java handles it
+fi
+
+# Basic validation: must contain a "regions" key
+if ! echo "$data" | grep -q '"regions"'; then
+    echo "contentstack/cms: Warning — downloaded data is not valid regions.json." >&2
+    exit 0
+fi
+
+echo "$data" > "$DEST"
+
+region_count=$(echo "$data" | grep -o '"id"' | wc -l | tr -d ' ')
+echo "contentstack/cms: regions.json downloaded (${region_count} regions)."

src/main/java/com/contentstack/cms/Contentstack.java

@@ -14,6 +14,7 @@
 import org.jetbrains.annotations.NotNull;
 
 import com.contentstack.cms.core.AuthInterceptor;
+import com.contentstack.cms.core.Endpoint;
 import com.contentstack.cms.core.Util;
 import static com.contentstack.cms.core.Util.API_KEY;
 import static com.contentstack.cms.core.Util.AUTHORIZATION;
@@ -561,6 +562,81 @@ public CompletableFuture<Void> oauthLogout() {
         return oauthLogout(false);
     }
 
+    /**
+     * Forces a live download of the Contentstack regions registry and replaces
+     * the in-memory cache. Useful when new regions or service URLs have been
+     * published since the SDK JAR was built.
+     *
+     * <pre>{@code
+     * int count = Contentstack.refreshRegions();
+     * // now getContentstackEndpoint() resolves from the freshly downloaded registry
+     * }</pre>
+     *
+     * @return the number of regions loaded from the live registry
+     * @throws RuntimeException if the download fails
+     */
+    public static int refreshRegions() {
+        return Endpoint.refresh();
+    }
+
+    /**
+     * Resolves a Contentstack service endpoint URL for the given region.
+     *
+     * <pre>{@code
+     * // Full URL
+     * String url = Contentstack.getContentstackEndpoint("eu", "contentManagement");
+     * // → "https://eu-api.contentstack.com"
+     *
+     * // Host only (for Builder.setHost)
+     * String host = Contentstack.getContentstackEndpoint("eu", "contentManagement", true);
+     * // → "eu-api.contentstack.com"
+     * }</pre>
+     *
+     * @param region    region ID or alias (e.g. {@code na}, {@code eu}, {@code azure-na})
+     * @param service   service key (e.g. {@code contentManagement}, {@code contentDelivery})
+     * @param omitHttps when {@code true}, strips {@code https://} from the returned URL
+     * @return the resolved URL string
+     * @throws IllegalArgumentException if region or service is unknown
+     */
+    public static String getContentstackEndpoint(String region, String service, boolean omitHttps) {
+        return Endpoint.getContentstackEndpoint(region, service, omitHttps);
+    }
+
+    /**
+     * Resolves a Contentstack service endpoint URL for the given region (with scheme).
+     *
+     * @param region  region ID or alias
+     * @param service service key
+     * @return the resolved URL including {@code https://}
+     * @throws IllegalArgumentException if region or service is unknown
+     */
+    public static String getContentstackEndpoint(String region, String service) {
+        return Endpoint.getContentstackEndpoint(region, service);
+    }
+
+    /**
+     * Returns all endpoint URLs for the given region as an ordered map.
+     *
+     * @param region region ID or alias
+     * @return map of service name → URL (includes {@code https://})
+     * @throws IllegalArgumentException if region is unknown or empty
+     */
+    public static java.util.Map<String, String> getContentstackEndpoints(String region) {
+        return Endpoint.getContentstackEndpoints(region);
+    }
+
+    /**
+     * Returns all endpoint URLs for the given region as an ordered map.
+     *
+     * @param region    region ID or alias
+     * @param omitHttps when {@code true}, strips {@code https://} from every URL
+     * @return map of service name → URL
+     * @throws IllegalArgumentException if region is unknown or empty
+     */
+    public static java.util.Map<String, String> getContentstackEndpoints(String region, boolean omitHttps) {
+        return Endpoint.getContentstackEndpoints(region, omitHttps);
+    }
+
     public Contentstack(Builder builder) {
         this.host = builder.hostname;
         this.port = builder.port;
@@ -577,6 +653,16 @@ public Contentstack(Builder builder) {
         this.retryConfig = builder.retryConfig;
     }
 
+    /** Returns the API hostname this client is configured to target. */
+    public String getHost() {
+        return host;
+    }
+
+    /** Returns the full Retrofit base URL (e.g. {@code https://eu-api.contentstack.com/v3/}). */
+    public String getBaseUrl() {
+        return instance.baseUrl().toString();
+    }
+
     public RetryConfig getRetryConfig() {
         return retryConfig;
     }
@@ -665,6 +751,30 @@ public Builder setHost(@NotNull String hostname) {
             return this;
         }
 
+        /**
+         * Configures the client to target a specific Contentstack region by resolving
+         * the correct Content Management API host from the bundled regions registry.
+         *
+         * <p>This is a convenience alternative to calling {@link #setHost(String)} with
+         * a manually constructed hostname.
+         *
+         * <pre>{@code
+         * Contentstack client = new Contentstack.Builder()
+         *     .setAuthtoken("authtoken")
+         *     .setRegion(ContentstackRegion.EU)
+         *     .build();
+         * }</pre>
+         *
+         * @param region region ID or alias (e.g. {@code "na"}, {@code "eu"}, {@code "azure-na"}).
+         *               Use constants from {@link com.contentstack.cms.core.ContentstackRegion}.
+         * @return this Builder
+         * @throws IllegalArgumentException if the region is unknown or empty
+         */
+        public Builder setRegion(@NotNull String region) {
+            this.hostname = Endpoint.getContentstackEndpoint(region, "contentManagement", true);
+            return this;
+        }
+
         /**
          * Set port for client instance
          *