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/*
*
* 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.
*
*/
/**
* Signature for the channel. If two channel's signatures are the same, they share the same
* underlying \a GRPCChannel object.
*/
#import <GRPCClient/GRPCCallOptions.h>
#import "GRPCChannelFactory.h"
NS_ASSUME_NONNULL_BEGIN
@class GRPCChannel;
@interface GRPCChannelConfiguration : NSObject<NSCopying>
@property(copy, readonly) NSString *host;
@property(strong, readonly) GRPCCallOptions *callOptions;
@property(readonly) id<GRPCChannelFactory> channelFactory;
@property(readonly) NSDictionary *channelArgs;
- (nullable instancetype)initWithHost:(NSString *)host callOptions:(GRPCCallOptions *)callOptions;
@end
/**
* Manage the pool of connected channels. When a channel is no longer referenced by any call,
* destroy the channel after a certain period of time elapsed.
*/
@interface GRPCChannelPool : NSObject
- (instancetype)init;
- (instancetype)initWithChannelDestroyDelay:(NSTimeInterval)channelDestroyDelay NS_DESIGNATED_INITIALIZER;
/**
* Return a channel with a particular configuration. If the channel does not exist, execute \a
* createChannel then add it in the pool. If the channel exists, increase its reference count.
*/
- (GRPCChannel *)channelWithConfiguration:(GRPCChannelConfiguration *)configuration
createChannel:(GRPCChannel * (^)(void))createChannel;
/** Decrease a channel's refcount. */
- (void)unrefChannelWithConfiguration:configuration;
/** Clear all channels in the pool. */
- (void)clear;
@end
NS_ASSUME_NONNULL_END
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