fix: Docker advertised address and routing logic in Neo4jConnectionPool (#243)

Author: exaby73

docker-compose.yml

@@ -64,8 +64,8 @@ services:
       - "11474:7474"
     environment:
       <<: *common-env
-      NEO4j_server_bolt_advertised_address: localhost:11687
-      NEO4j_server_http_advertised_address: localhost:11474
+      NEO4J_server_bolt_advertised__address: neo4j:7687
+      NEO4J_server_http_advertised__address: neo4j:7474
 
   server1:
     <<: *common-cluster
@@ -76,8 +76,8 @@ services:
       - "7474:7474"
     environment:
       <<: *common-core-env
-      NEO4j_server_bolt_advertised_address: localhost:7687
-      NEO4j_server_http_advertised_address: localhost:7474
+      NEO4J_server_bolt_advertised__address: server1:7687
+      NEO4J_server_http_advertised__address: server1:7474
 
   server2:
     <<: *common-cluster
@@ -88,8 +88,8 @@ services:
       - "8474:7474"
     environment:
       <<: *common-core-env
-      NEO4j_server_bolt_advertised_address: localhost:8687
-      NEO4j_server_http_advertised_address: localhost:8474
+      NEO4J_server_bolt_advertised__address: server2:7687
+      NEO4J_server_http_advertised__address: server2:7474
 
   server3:
     <<: *common-cluster
@@ -100,8 +100,8 @@ services:
       - "9687:7687"
     environment:
       <<: *common-core-env
-      NEO4j_server_bolt_advertised_address: localhost:9687
-      NEO4j_server_http_advertised_address: localhost:9474
+      NEO4J_server_bolt_advertised__address: server3:7687
+      NEO4J_server_http_advertised__address: server3:7474
 
   server4:
     <<: *common-cluster
@@ -113,5 +113,5 @@ services:
     environment:
       <<: *common-cluster-env
       NEO4J_initial_server_mode__constraint: 'SECONDARY'
-      NEO4j_server_bolt_advertised_address: localhost:10687
-      NEO4j_server_http_advertised_address: localhost:10474
+      NEO4J_server_bolt_advertised__address: server4:7687
+      NEO4J_server_http_advertised__address: server4:7474

src/Neo4j/Neo4jConnectionPool.php

@@ -13,8 +13,6 @@
 
 namespace Laudis\Neo4j\Neo4j;
 
-use function array_unique;
-
 use Bolt\error\ConnectException;
 
 use function count;
@@ -25,7 +23,6 @@
 use function implode;
 
 use Laudis\Neo4j\Bolt\BoltConnection;
-use Laudis\Neo4j\Bolt\Connection;
 use Laudis\Neo4j\Bolt\ConnectionPool;
 use Laudis\Neo4j\BoltFactory;
 use Laudis\Neo4j\Common\Cache;
@@ -127,7 +124,7 @@ public function acquire(SessionConfiguration $config): Generator
     {
         $key = $this->createKey($this->data, $config);
 
-        /** @var RoutingTable|null */
+        /** @var RoutingTable|null $table */
         $table = $this->cache->get($key);
         $triedAddresses = [];
 
@@ -164,7 +161,7 @@ public function acquire(SessionConfiguration $config): Generator
             throw new RuntimeException(sprintf('Cannot connect to host: "%s". Hosts tried: "%s"', $this->data->getUri()->getHost(), implode('", "', $triedAddresses)), previous: $latestError);
         }
 
-        $server = $this->getNextServer($table, $config->getAccessMode()) ?? $this->data->getUri();
+        $server = $this->getNextServer($table, $config->getAccessMode());
 
         if ($server->getScheme() === '') {
             $server = $server->withScheme($this->data->getUri()->getScheme());
@@ -181,13 +178,8 @@ public function getLogger(): ?Neo4jLogger
     /**
      * @throws Exception
      */
-    private function getNextServer(RoutingTable $table, AccessMode $mode): ?Uri
+    private function getNextServer(RoutingTable $table, AccessMode $mode): Uri
     {
-        $servers = array_unique($table->getWithRole());
-        if (count($servers) === 1) {
-            return null;
-        }
-
         if (AccessMode::WRITE() === $mode) {
             $servers = $table->getWithRole(RoutingRoles::LEADER());
         } else {
@@ -233,7 +225,7 @@ private function createKey(ConnectionRequestData $data, ?SessionConfiguration $c
                 [
                     $data->getUserAgent(),
                     $uri->getHost(),
-                    $config ? $config->getDatabase() : null,
+                    $config?->getDatabase(),
                     $uri->getPort() ?? '7687',
                 ]
             )