Module: A2A::Client::Middleware

Defined in:
lib/a2a/modules.rb,
lib/a2a/client/middleware.rb,
lib/a2a/client/middleware/retry_interceptor.rb,
lib/a2a/client/middleware/logging_interceptor.rb,
lib/a2a/client/middleware/rate_limit_interceptor.rb,
lib/a2a/client/middleware/circuit_breaker_interceptor.rb

Defined Under Namespace

Classes: Base, CircuitBreakerInterceptor, LoggingInterceptor, RateLimitInterceptor, RetryInterceptor

Class Method Summary collapse

Class Method Details

.default_stack(config = {}) ⇒ Array<Base>

Create default middleware stack

Parameters:

  • config (Hash) (defaults to: {}) —

    Configuration options

Returns:

  • (Array<Base>) —

    Default middleware stack



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# File 'lib/a2a/client/middleware.rb', line 89

def self.default_stack(config = {})
  stack = []

  # Add retry middleware
  stack << RetryInterceptor.new if config.fetch("retry", true)

  # Add logging middleware
  stack << LoggingInterceptor.new if config.fetch("logging", true)

  # Add rate limiting if configured
  if config["rate_limit"]
    stack << RateLimitInterceptor.new(
      requests_per_second: config["rate_limit"]["requests_per_second"] || 10
    )
  end

  # Add circuit breaker if configured
  if config["circuit_breaker"]
    stack << CircuitBreakerInterceptor.new(
      failure_threshold: config["circuit_breaker"]["failure_threshold"] || 5
    )
  end

  stack
end

.from_config(config) ⇒ Base

Create middleware from configuration

Parameters:

  • config (Hash) —

    Middleware configuration

Returns:

  • (Base) —

    Configured middleware instance



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# File 'lib/a2a/client/middleware.rb', line 48

def self.from_config(config)
  type = config["type"] || config[:type]

  case type
  when "retry"
    RetryInterceptor.new(
      max_attempts: config["max_attempts"] || config[:max_attempts] || 3,
      initial_delay: config["initial_delay"] || config[:initial_delay] || 1.0,
      max_delay: config["max_delay"] || config[:max_delay] || 60.0,
      backoff_multiplier: config["backoff_multiplier"] || config[:backoff_multiplier] || 2.0,
      retryable_errors: config["retryable_errors"] || config[:retryable_errors]
    )
  when "logging"
    LoggingInterceptor.new(
      logger: config["logger"] || config[:logger],
      log_level: config["log_level"] || config[:log_level] || :info,
      log_requests: config["log_requests"] || config[:log_requests] || true,
      log_responses: config["log_responses"] || config[:log_responses] || true,
      log_errors: config["log_errors"] || config[:log_errors] || true
    )
  when "rate_limit"
    RateLimitInterceptor.new(
      requests_per_second: config["requests_per_second"] || config[:requests_per_second] || 10,
      burst_size: config["burst_size"] || config[:burst_size] || 20
    )
  when "circuit_breaker"
    CircuitBreakerInterceptor.new(
      failure_threshold: config["failure_threshold"] || config[:failure_threshold] || 5,
      timeout: config["timeout"] || config[:timeout] || 60,
      expected_errors: config["expected_errors"] || config[:expected_errors]
    )
  else
    raise ArgumentError, "Unknown middleware type: #{type}"
  end
end