allow vendord

vendor/google/grpc-gcp/src/GCPCallInvoker.php

@@ -0,0 +1,86 @@
+<?php
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed 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.
+ *
+ */
+namespace Grpc\Gcp;
+
+/**
+ * GCPCallInvoker updates the channel pool(GcpExtensionChannel) for
+ * each RPC. The idea is:
+ * Before the RPC starts, pick a channel from the channel pool:
+ *   - if the RPC is bound to a channel, use that channel.
+ *   - if the RPC doesn't bound to a channel, use the one with minimum active streams.
+ * After the RPC finishes, update the active stream ref count.
+ *   - if the RPC is defined as bind, bind the channel with corresponding key like
+ *     spanner session name.
+ *   - if the RPC is defined as unbind, unbind the channel with the key.
+ */
+class GCPCallInvoker implements \Grpc\CallInvoker
+{
+    private $channel;
+    private $affinity_conf;
+
+    /**
+     * @param array  $affinity_conf Store the affinity config for process each RPC.
+     */
+    public function __construct($affinity_conf)
+    {
+        $this->affinity_conf = $affinity_conf;
+    }
+
+    /**
+     * @param string  $hostname
+     * @param array  $opts
+     * @return GcpExtensionChannel
+     */
+    public function createChannelFactory($hostname, $opts)
+    {
+        if ($this->channel) {
+            // $call_invoker object has already created from previews PHP-FPM scripts.
+            // Only need to update the $opts including the credentials.
+            $this->channel->updateOpts($opts);
+        } else {
+            $opts['affinity_conf'] = $this->affinity_conf;
+            $channel = new GcpExtensionChannel($hostname, $opts);
+            $this->channel = $channel;
+        }
+        return $this->channel;
+    }
+
+    // _getChannel is used for testing only.
+    public function GetChannel()
+    {
+        return $this->channel;
+    }
+
+    public function UnaryCall($channel, $method, $deserialize, $options)
+    {
+        return new GCPUnaryCall($channel, $method, $deserialize, $options);
+    }
+    public function ClientStreamingCall($channel, $method, $deserialize, $options)
+    {
+        return new GCPClientStreamCall($channel, $method, $deserialize, $options);
+    }
+    public function ServerStreamingCall($channel, $method, $deserialize, $options)
+    {
+        return new GCPServerStreamCall($channel, $method, $deserialize, $options);
+    }
+    public function BidiStreamingCall($channel, $method, $deserialize, $options)
+    {
+        return new GCPBidiStreamingCall($channel, $method, $deserialize, $options);
+    }
+}