Class: Fontist::Indexes::IncrementalIndexUpdater

Inherits:
Object
  • Object
show all
Defined in:
lib/fontist/indexes/incremental_index_updater.rb

Overview

Service for performing incremental index updates Only scans changed files/directories instead of full scans

Constant Summary collapse

SNAPSHOT_TTL =

5 minutes

300
CHANGE_DETECTION_TTL =

1 minute

60

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(directory_path) ⇒ IncrementalIndexUpdater

Initialize updater for a directory



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 16

def initialize(directory_path)
  @directory_path = directory_path
  @changes = []
end

Instance Attribute Details

#changes ⇒ Object (readonly)

Returns the value of attribute changes.



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 13

def changes
  @changes
end

#directory_path ⇒ Object (readonly)

Returns the value of attribute directory_path.



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 13

def directory_path
  @directory_path
end

Instance Method Details

#added_files ⇒ Object

Get list of added files



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 44

def added_files
  @changes.select(&:added?)
end

#changes? ⇒ Boolean

Check if any changes were detected

Returns:

  • (Boolean) 


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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 59

def changes?
  @changes.any?
end

#modified_files ⇒ Object

Get list of modified files



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 49

def modified_files
  @changes.select(&:modified?)
end

#removed_files ⇒ Object

Get list of removed files



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 54

def removed_files
  @changes.select(&:removed?)
end

#stats ⇒ Object

Get scan statistics



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 64

def stats
  {
    total_changes: @changes.size,
    added: added_files.size,
    modified: modified_files.size,
    removed: removed_files.size,
  }
end

#update ⇒ Object

Perform incremental update Returns: Array of DirectoryChange objects



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# File 'lib/fontist/indexes/incremental_index_updater.rb', line 23

def update
  old_snapshot = load_snapshot
  new_snapshot = create_snapshot

  @changes = if old_snapshot.nil?
               # First scan - all files are new
               new_snapshot.files.map do |file|
                 DirectoryChange.added(file[:filename], file)
               end
             else
               # Detect changes
               DirectoryChange.diff(old_snapshot, new_snapshot)
             end

  # Save new snapshot for next time
  save_snapshot(new_snapshot)

  @changes
end