Class: RailsErrorDashboard::Queries::PlatformComparison

Inherits:
Object
  • Object
show all
Defined in:
lib/rails_error_dashboard/queries/platform_comparison.rb

Overview

Query object for comparing error metrics across platforms

Provides analytics comparing iOS vs Android vs API vs Web platforms:

  • Error rates and trends

  • Severity distribution

  • Resolution times

  • Top errors per platform

  • Platform stability scores

  • Cross-platform errors

Examples:

comparison = PlatformComparison.new(days: 7)
comparison.error_rate_by_platform
# => { "ios" => 150, "android" => 200, "api" => 50, "web" => 100 }

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(days: 7, application_id: nil) ⇒ PlatformComparison

Returns a new instance of PlatformComparison.

Parameters:

  • days (Integer) (defaults to: 7) —

    Number of days to analyze (default: 7)

  • application_id (Integer, nil) (defaults to: nil) —

    Optional application ID to filter by



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 24

def initialize(days: 7, application_id: nil)
  @days = days
  @application_id = application_id
  @start_date = days.days.ago
end

Instance Attribute Details

#application_id ⇒ Object (readonly)

Returns the value of attribute application_id.



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 20

def application_id
  @application_id
end

#days ⇒ Object (readonly)

Returns the value of attribute days.



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 20

def days
  @days
end

Instance Method Details

#cross_platform_errors ⇒ Array<Hash>

Find errors that occur across multiple platforms

Returns:

  • (Array<Hash>) —

    Errors with their platforms



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 146

def cross_platform_errors
  # Get error types that appear on 2+ platforms
  error_types_with_platforms = base_scope
    .where("occurred_at >= ?", @start_date)
    .group(:error_type, :platform)
    .select(:error_type, :platform)
    .having("COUNT(*) > 0")
    .pluck(:error_type, :platform)

  # Group by error_type to find those on multiple platforms
  errors_by_type = error_types_with_platforms.group_by { |error_type, _| error_type }

  errors_by_type
    .select { |_, platforms| platforms.map(&:last).uniq.count > 1 }
    .map do |error_type, platform_pairs|
      platforms = platform_pairs.map(&:last).uniq
      total_count = base_scope
        .where(error_type: error_type, platform: platforms)
        .where("occurred_at >= ?", @start_date)
        .sum(:occurrence_count)

      {
        error_type: error_type,
        platforms: platforms.sort,
        total_occurrences: total_count,
        platform_breakdown: platforms.each_with_object({}) do |platform, breakdown|
          breakdown[platform] = base_scope
            .where(error_type: error_type, platform: platform)
            .where("occurred_at >= ?", @start_date)
            .sum(:occurrence_count)
        end
      }
    end
    .sort_by { |error| -error[:total_occurrences] }
end

#daily_trend_by_platform ⇒ Hash

Get daily error trend by platform

Returns:

  • (Hash) —

    Platform => { date => count }



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 184

def daily_trend_by_platform
  platforms = base_scope.distinct.pluck(:platform).compact

  platforms.each_with_object({}) do |platform, result|
    result[platform] = base_scope
      .where(platform: platform)
      .where("occurred_at >= ?", @start_date)
      .group_by_day(:occurred_at, range: @start_date..Time.current)
      .count
  end
end

#error_rate_by_platform ⇒ Hash

Get error count by platform for the time period

Returns:

  • (Hash) —

    Platform name => error count



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 44

def error_rate_by_platform
  base_scope
    .where("occurred_at >= ?", @start_date)
    .group(:platform)
    .count
end

#platform_health_summary ⇒ Hash

Get platform health summary

Returns:

  • (Hash) —

    Platform => health metrics



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 198

def platform_health_summary
  platforms = base_scope.distinct.pluck(:platform).compact
  error_rates = error_rate_by_platform
  stability_scores = platform_stability_scores

  platforms.each_with_object({}) do |platform, result|
    total_errors = error_rates[platform] || 0

    # Count critical errors by checking severity method
    critical_errors = base_scope
      .where(platform: platform)
      .where("occurred_at >= ?", @start_date)
      .select { |error| error.severity == :critical }
      .count

    unresolved_errors = base_scope
      .where(platform: platform, resolved_at: nil)
      .where("occurred_at >= ?", @start_date)
      .count

    resolved_errors = base_scope
      .where(platform: platform)
      .where.not(resolved_at: nil)
      .where("occurred_at >= ?", @start_date)
      .count

    resolution_rate = total_errors.positive? ? ((resolved_errors.to_f / total_errors) * 100).round(1) : 0.0

    # Calculate error velocity (increasing or decreasing)
    first_half = base_scope
      .where(platform: platform)
      .where("occurred_at >= ? AND occurred_at < ?", @start_date, @start_date + (@days / 2.0).days)
      .count

    second_half = base_scope
      .where(platform: platform)
      .where("occurred_at >= ?", @start_date + (@days / 2.0).days)
      .count

    velocity = first_half.positive? ? (((second_half - first_half).to_f / first_half) * 100).round(1) : 0.0

    result[platform] = {
      total_errors: total_errors,
      critical_errors: critical_errors,
      unresolved_errors: unresolved_errors,
      resolution_rate: resolution_rate,
      stability_score: stability_scores[platform] || 0,
      error_velocity: velocity, # Positive = increasing, negative = decreasing
      health_status: determine_health_status(stability_scores[platform] || 0, velocity)
    }
  end
end

#platform_stability_scores ⇒ Hash

Calculate platform stability score (0-100) Higher score = more stable (fewer errors, faster resolution)

Returns:

  • (Hash) —

    Platform => stability score



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 121

def platform_stability_scores
  platforms = base_scope.distinct.pluck(:platform).compact
  error_rates = error_rate_by_platform
  resolution_times = resolution_time_by_platform

  # Find max values for normalization
  max_errors = error_rates.values.max || 1
  max_resolution_time = resolution_times.values.compact.max || 1

  platforms.each_with_object({}) do |platform, result|
    error_count = error_rates[platform] || 0
    avg_resolution = resolution_times[platform] || 0

    # Normalize to 0-1 scale (inverted - lower is better)
    error_score = 1.0 - (error_count.to_f / max_errors)
    resolution_score = avg_resolution.positive? ? 1.0 - (avg_resolution / max_resolution_time) : 1.0

    # Weight: 70% error count, 30% resolution time
    # Convert to 0-100 scale
    result[platform] = ((error_score * 0.7 + resolution_score * 0.3) * 100).round(1)
  end
end

#resolution_time_by_platform ⇒ Hash

Get average resolution time by platform

Returns:

  • (Hash) —

    Platform => average hours to resolve



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 73

def resolution_time_by_platform
  platforms = base_scope.distinct.pluck(:platform).compact

  platforms.each_with_object({}) do |platform, result|
    resolved_errors = base_scope
      .where(platform: platform)
      .where.not(resolved_at: nil)
      .where("occurred_at >= ?", @start_date)

    if resolved_errors.any?
      total_hours = resolved_errors.sum do |error|
        ((error.resolved_at - error.occurred_at) / 3600.0).round(2)
      end
      result[platform] = (total_hours / resolved_errors.count).round(2)
    else
      result[platform] = nil
    end
  end
end

#severity_distribution_by_platform ⇒ Hash

Get severity distribution by platform

Returns:

  • (Hash) —

    Platform => { severity => count }



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 53

def severity_distribution_by_platform
  platforms = base_scope.distinct.pluck(:platform).compact

  platforms.each_with_object({}) do |platform, result|
    errors = base_scope
      .where(platform: platform)
      .where("occurred_at >= ?", @start_date)

    # Calculate severity in Ruby since it's a method, not a column
    severity_counts = Hash.new(0)
    errors.each do |error|
      severity_counts[error.severity] += 1
    end

    result[platform] = severity_counts
  end
end

#top_errors_by_platform ⇒ Hash

Get top 10 errors for each platform

Returns:

  • (Hash) —

    Platform => Array of error hashes



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# File 'lib/rails_error_dashboard/queries/platform_comparison.rb', line 95

def top_errors_by_platform
  platforms = base_scope.distinct.pluck(:platform).compact

  platforms.each_with_object({}) do |platform, result|
    result[platform] = base_scope
      .where(platform: platform)
      .where("occurred_at >= ?", @start_date)
      .select(:id, :error_type, :message, :occurrence_count, :occurred_at)
      .order(occurrence_count: :desc)
      .limit(10)
      .map do |error|
        {
          id: error.id,
          error_type: error.error_type,
          message: error.message&.truncate(100),
          severity: error.severity, # Calls the method
          occurrence_count: error.occurrence_count,
          occurred_at: error.occurred_at
        }
      end
  end
end