Class: Sentiero::Rails::Store

Inherits:
Store
  • Object
show all
Defined in:
lib/sentiero/rails/store.rb

Instance Method Summary collapse

Constructor Details

#initialize(limits: nil) ⇒ Store

Returns a new instance of Store.



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# File 'lib/sentiero/rails/store.rb', line 13

def initialize(limits: nil)
  @limits = limits
end

Instance Method Details

#count_occurrences(problem_id, after: nil) ⇒ Object

COUNT in SQL instead of materializing every row.



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# File 'lib/sentiero/rails/store.rb', line 286

def count_occurrences(problem_id, after: nil)
  validate_id!(problem_id)
  scope = Occurrence.where(fingerprint: problem_id)
  scope = scope.where("timestamp > ?", after.to_f) if after
  scope.count
end

#delete_session(session_id) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 143

def delete_session(session_id)
  validate_id!(session_id)
  Session.transaction do
    destroy_session_data(session_id)
  end
  nil
end

#delete_window(ref) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 151

def delete_window(ref)
  validate_window_ref!(ref)
  session_id, window_id = ref.session_id, ref.window_id
  Session.transaction do
    Event.where(session_id: session_id, window_id: window_id).delete_all

    remaining = Event.where(session_id: session_id).exists?
    unless remaining
      Session.where(session_id: session_id).delete_all
    end
  end
  nil
end

#each_session_events(limit: nil, since: nil, until_time: nil) ⇒ Object

Batched scan: one events query for the whole session page instead of the base's get_session + get_events per window.



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# File 'lib/sentiero/rails/store.rb', line 47

def each_session_events(limit: nil, since: nil, until_time: nil)
  return enum_for(:each_session_events, limit: limit, since: since, until_time: until_time) unless block_given?

  cap = limit || limits.analytics_max_scan_sessions
  summaries = list_sessions(limit: cap, since: since, until_time: until_time)
  return if summaries.empty?

  events = events_by_session_window(summaries.map { |summary| summary[:session_id] })
  summaries.each do |summary|
    (events[summary[:session_id]] || {}).each do |window_id, window_events|
      yield summary, window_id, window_events
    end
  end
end

#get_events(ref, after: nil, limit: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 112

def get_events(ref, after: nil, limit: nil)
  validate_window_ref!(ref)
  session_id, window_id = ref.session_id, ref.window_id
  scope = Event.where(session_id: session_id, window_id: window_id)
    .order(timestamp: :asc)

  scope = scope.where("timestamp > ?", after.to_f) if after
  scope = scope.limit(limit) if limit

  scope.map(&:data)
end

#get_occurrences(problem_id, after: nil, limit: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 277

def get_occurrences(problem_id, after: nil, limit: nil)
  validate_id!(problem_id)
  scope = Occurrence.where(fingerprint: problem_id).order(timestamp: :asc)
  scope = scope.where("timestamp > ?", after.to_f) if after
  scope = scope.limit(limit) if limit
  scope.map(&:data)
end

#get_problem(problem_id) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 271

def get_problem(problem_id)
  validate_id!(problem_id)
  problem = Problem.find_by(fingerprint: problem_id)
  problem ? problem_to_hash(problem) : nil
end

#get_server_event(event_id) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 320

def get_server_event(event_id)
  validate_id!(event_id)
  ServerEvent.find_by(event_id: event_id)&.data
end

#get_session(session_id) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 79

def get_session(session_id)
  validate_id!(session_id)
  session = Session.find_by(session_id: session_id)
  return nil unless session

  window_stats = Event.where(session_id: session_id)
    .group(:window_id)
    .pluck(:window_id, Arel.sql("COUNT(*)"), Arel.sql("MIN(timestamp)"), Arel.sql("MAX(timestamp)"))

  window_data = window_stats.map { |wid, count, first_ts, last_ts|
    entry = {window_id: wid, event_count: count}
    entry[:first_event_at] = first_ts.to_f if first_ts
    entry[:last_event_at] = last_ts.to_f if last_ts
    entry
  }

  timestamps = Event.where(session_id: session_id)
    .pick(Arel.sql("MIN(timestamp)"), Arel.sql("MAX(timestamp)"))

  result = {
    session_id: session.session_id,
    windows: window_data,
    created_at: session.created_at.to_f,
    updated_at: session.updated_at.to_f,
    first_event_at: timestamps&.first&.to_f,
    last_event_at: timestamps&.last&.to_f
  }
  if metadata_column? && session.metadata.present?
    result[:metadata] = session.metadata
  end
  result
end

#list_problems(project:, limit:, offset: 0, status: nil, sort_by: nil, search: nil, since: nil, until_time: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 253

def list_problems(project:, limit:, offset: 0, status: nil, sort_by: nil, search: nil, since: nil, until_time: nil)
  scope = Problem.all
  scope = scope.where(project: project) unless project.nil?
  scope = scope.where(status: status) if status
  scope = scope.where("last_seen >= ?", since.to_f) if since
  scope = scope.where("last_seen <= ?", until_time.to_f) if until_time
  if search && !search.empty?
    pattern = "%#{search}%"
    scope = scope.where("title LIKE ? OR exception_class LIKE ?", pattern, pattern)
  end
  scope = case sort_by
  when "first_seen" then scope.order(first_seen: :desc)
  when "count" then scope.order(count: :desc)
  else scope.order(last_seen: :desc)
  end
  scope.offset(offset).limit(limit).map { |p| problem_to_hash(p) }
end

#list_server_events(project:, limit:, name: nil, level: nil, session_id: nil, after: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 325

def list_server_events(project:, limit:, name: nil, level: nil, session_id: nil, after: nil)
  scope = ServerEvent.all
  scope = scope.where(project: project) unless project.nil?
  scope = scope.order(timestamp: :asc)
  scope = scope.where(name: name) if name
  scope = scope.where(level: level) if level
  scope = scope.where(session_id: session_id) if session_id
  scope = scope.where("timestamp > ?", after.to_f) if after
  scope.limit(limit).map(&:data)
end

#list_sessions(limit:, offset: 0, since: nil, until_time: nil, sort_by: nil, search: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 62

def list_sessions(limit:, offset: 0, since: nil, until_time: nil, sort_by: nil, search: nil)
  scope = filtered_session_scope(since:, until_time:, search:)
  scope = ordered_session_scope(scope, sort_by)

  sessions = scope.offset(offset).limit(limit).to_a
  return [] if sessions.empty?

  sids = sessions.map(&:session_id)
  window_ids_by_session = window_ids_for(sids)
  counts_by_session = event_counts_for(sids)
  timestamp_ranges = timestamp_ranges_for(sids)

  sessions.map { |session|
    session_summary(session, window_ids_by_session, counts_by_session, timestamp_ranges)
  }
end

#occurrences_for_session(session_id, limit: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 336

def occurrences_for_session(session_id, limit: nil)
  validate_id!(session_id)
  scope = Occurrence.where(session_id: session_id).order(timestamp: :asc)
  scope = scope.limit(limit) if limit
  scope.map(&:data)
end

#purge_older_than(seconds) ⇒ Object

Subquery-based DELETEs avoid loading stale ids into Ruby and large IN (...) lists.



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# File 'lib/sentiero/rails/store.rb', line 166

def purge_older_than(seconds)
  cutoff = Time.at(Time.now.to_f - seconds)
  cutoff_f = cutoff.to_f
  session_count = nil

  Session.transaction do
    stale = Session.where("updated_at < ?", cutoff)
    Event.where(session_id: stale.select(:session_id)).delete_all
    session_count = stale.delete_all

    ServerEvent.where("timestamp < ?", cutoff_f).delete_all
    Occurrence.where("timestamp < ?", cutoff_f).delete_all
    stale_fps = Problem.where("last_seen < ?", cutoff_f).pluck(:fingerprint)
    unless stale_fps.empty?
      Occurrence.where(fingerprint: stale_fps).delete_all
      Problem.where(fingerprint: stale_fps).delete_all
    end
  end

  session_count
end

#save_events(ref, events) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 17

def save_events(ref, events)
  return if events.nil? || events.empty?
  session_id, window_id = ref.session_id, ref.window_id

  now = Time.now

  Session.transaction do
    session = find_or_create_session!(session_id, now)
    session.update_column(:updated_at, now) unless session.previously_new_record?

    rows = events.map { |event|
      {
        session_id: session_id,
        window_id: window_id,
        timestamp: event["timestamp"]&.to_f,
        data: event,
        created_at: now
      }
    }
    Event.insert_all(rows)

    enforce_max_events_per_session(session_id)
    enforce_max_sessions(session_id)
  end

  nil
end

#save_metadata(session_id, metadata) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 124

def save_metadata(session_id, metadata)
  return unless metadata.is_a?(Hash) && !metadata.empty?
  return unless metadata_column?
  validate_metadata!(metadata)

  session = Session.find_by(session_id: session_id)
  return unless session

  # Locked reload-merge-save, mirroring save_occurrence's Problem.lock:
  # an unlocked read-modify-write here drops keys from a concurrent
  # merge (e.g. this same method called for "has_errors" from
  # save_occurrence racing a client-supplied metadata update).
  session.with_lock do
    existing = session.metadata || {}
    session.update_column(:metadata, existing.merge(metadata.transform_keys(&:to_s)))
  end
  nil
end

#save_occurrence(occurrence) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 188

def save_occurrence(occurrence)
  validate_occurrence!(occurrence)
  fp = occurrence["fingerprint"]
  ts = occurrence["timestamp"].to_f
  occ_id = SecureRandom.uuid
  stored = occurrence.merge("id" => occ_id)

  # On a concurrent insert of a new fingerprint one writer's save! raises
  # (RecordInvalid from the uniqueness validator, or RecordNotUnique from the
  # DB index); retry so the loser re-runs and takes the "existing" branch.
  attempts = 0
  begin
    Problem.transaction do
      # SELECT ... FOR UPDATE so the count+1 / last_seen read-modify-write is
      # serialized; an unlocked find lost concurrent updates under READ COMMITTED.
      problem = Problem.lock.find_by(fingerprint: fp)
      if problem
        reopening = problem.status == "resolved"
        problem.count += 1
        problem.first_seen = [problem.first_seen, ts].min
        problem.last_seen = [problem.last_seen, ts].max
        problem.message = occurrence["message"]
        if reopening
          problem.status = "open"
          problem.resolved_at = nil
        end
      else
        problem = Problem.new(fingerprint: fp)
        problem.project = occurrence["project"]
        problem.exception_class = occurrence["exception_class"]
        problem.title = build_problem_title(occurrence)
        problem.message = occurrence["message"]
        problem.count = 1
        problem.status = "open"
        problem.first_seen = ts
        problem.last_seen = ts
        problem.resolved_at = nil
      end
      problem.save!

      Occurrence.create!(
        occurrence_id: occ_id,
        fingerprint: fp,
        session_id: occurrence["session_id"],
        timestamp: ts,
        data: stored
      )

      enforce_max_problems
    end
  rescue ::ActiveRecord::RecordNotUnique
    attempts += 1
    retry if attempts < 2
    raise
  rescue ::ActiveRecord::RecordInvalid => e
    raise unless e.record.errors[:fingerprint].any?
    attempts += 1
    retry if attempts < 2
    raise
  end

  save_metadata(occurrence["session_id"], {"has_errors" => true}) if occurrence["session_id"]
  fp
end

#save_server_event(event) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 301

def save_server_event(event)
  validate_server_event!(event)
  ev_id = SecureRandom.uuid
  stored = event.merge("id" => ev_id)
  ServerEvent.transaction do
    ServerEvent.create!(
      event_id: ev_id,
      project: event["project"],
      name: event["name"],
      level: event["level"],
      session_id: event["session_id"],
      timestamp: event["timestamp"].to_f,
      data: stored
    )
    enforce_max_server_events
  end
  nil
end

#server_events_for_session(session_id, limit: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 343

def server_events_for_session(session_id, limit: nil)
  validate_id!(session_id)
  scope = ServerEvent.where(session_id: session_id).order(timestamp: :asc)
  scope = scope.limit(limit) if limit
  scope.map(&:data)
end

#session_ids_for_problem(problem_id, limit: nil) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 350

def session_ids_for_problem(problem_id, limit: nil)
  validate_id!(problem_id)
  scope = Occurrence.where(fingerprint: problem_id)
    .where.not(session_id: nil)
    .group(:session_id)
    .order(Arel.sql("MAX(timestamp) DESC"))
    .pluck(:session_id)
  limit ? scope.first(limit) : scope
end

#update_problem_status(problem_id, status) ⇒ Object 



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# File 'lib/sentiero/rails/store.rb', line 293

def update_problem_status(problem_id, status)
  validate_id!(problem_id)
  validate_status!(status)
  resolved_at = (status == "resolved") ? Time.now.to_f : nil
  Problem.where(fingerprint: problem_id).update_all(status: status, resolved_at: resolved_at)
  nil
end