src/DotPulsar/Extensions/ProducerBuilderExtensions.cs

/*
 * 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 DotPulsar.Extensions;

using DotPulsar.Abstractions;
using DotPulsar.Internal;
using System;
using System.Threading;
using System.Threading.Tasks;

/// <summary>
/// Extensions for IProducerBuilder.
/// </summary>
public static class ProducerBuilderExtensions
{
    /// <summary>
    /// Register a state changed handler.
    /// </summary>
    public static IProducerBuilder<TMessage> StateChangedHandler<TMessage>(
        this IProducerBuilder<TMessage> builder,
        Action<ProducerStateChanged> handler)
    {
        void forwarder(ProducerStateChanged producerStateChanged, CancellationToken _) => handler(producerStateChanged);
        builder.StateChangedHandler(new ActionStateChangedHandler<ProducerStateChanged>(forwarder, default));
        return builder;
    }

    /// <summary>
    /// Register a state changed handler.
    /// </summary>
    public static IProducerBuilder<TMessage> StateChangedHandler<TMessage>(
        this IProducerBuilder<TMessage> builder,
        Action<ProducerStateChanged, CancellationToken> handler,
        CancellationToken cancellationToken = default)
    {
        builder.StateChangedHandler(new ActionStateChangedHandler<ProducerStateChanged>(handler, cancellationToken));
        return builder;
    }

    /// <summary>
    /// Register a state changed handler.
    /// </summary>
    public static IProducerBuilder<TMessage> StateChangedHandler<TMessage>(
        this IProducerBuilder<TMessage> builder,
        Func<ProducerStateChanged, CancellationToken, ValueTask> handler,
        CancellationToken cancellationToken = default)
    {
        builder.StateChangedHandler(new FuncStateChangedHandler<ProducerStateChanged>(handler, cancellationToken));
        return builder;
    }
}