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#include "source/extensions/common/wasm/remote_async_datasource.h"
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#include "envoy/config/core/v3/base.pb.h"

            

        

            

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#include "source/common/config/utility.h"

            

        

            

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#include "fmt/format.h"

            

        

            

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namespace Envoy {

            

        

            

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// Default Parameters of the jittered backoff strategy.

            

        

            

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static constexpr uint32_t RetryInitialDelayMilliseconds = 1000;

            

        

            

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static constexpr uint32_t RetryMaxDelayMilliseconds = 10 * 1000;

            

        

            

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static constexpr uint32_t RetryCount = 1;

            

        

            

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RemoteAsyncDataProvider::RemoteAsyncDataProvider(

            

        

            

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    Upstream::ClusterManager& cm, Init::Manager& manager,

            

        

            

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    const envoy::config::core::v3::RemoteDataSource& source, Event::Dispatcher& dispatcher,

            

        

            

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    Random::RandomGenerator& random, bool allow_empty, AsyncDataSourceCb&& callback)

            

        

            

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    : allow_empty_(allow_empty), callback_(std::move(callback)),

            

        

            

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      fetcher_(std::make_unique<Config::DataFetcher::RemoteDataFetcher>(cm, source.http_uri(),

            

        

            

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                                                                        source.sha256(), *this)),

            

        

            

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      init_target_("RemoteAsyncDataProvider", [this]() { start(); }),

            

        

            

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      retries_remaining_(

            

        

            

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          PROTOBUF_GET_WRAPPED_OR_DEFAULT(source.retry_policy(), num_retries, RetryCount)) {

            

        

            

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  auto strategy_or_error = Config::Utility::prepareJitteredExponentialBackOffStrategy(

            

        

            

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      source, random, RetryInitialDelayMilliseconds, RetryMaxDelayMilliseconds);

            

        

            

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  THROW_IF_NOT_OK_REF(strategy_or_error.status());

            

        

            

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  backoff_strategy_ = std::move(strategy_or_error.value());

            

        

            

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  retry_timer_ = dispatcher.createTimer([this]() -> void { start(); });

            

        

            

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  manager.add(init_target_);

            

        

            

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}

            

        

            

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} // namespace Envoy