Class: LogicaCompiler::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/logica_compiler/compiler.rb

Constant Summary collapse

DEFAULT_TIMEOUT = 
30
ENGINE_ALIASES =

User-friendly aliases → Logica CLI engine names. Python Logica uses "psql" as the PostgreSQL engine name (not "postgres").

{
  "postgres" => "psql",
  "postgresql" => "psql",
  "pg" => "psql",
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(config:) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/logica_compiler/compiler.rb', line 25

def initialize(config:)
  @config = config
  @logica_version = nil
end

Instance Method Details

#compile_all!(force: false, prune: true) ⇒ Object 



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# File 'lib/logica_compiler/compiler.rb', line 30

def compile_all!(force: false, prune: true)
  version = logica_version
  out_dir = @config.output_dir_path
  FileUtils.mkdir_p(out_dir)

  entries = {}
  @config.queries.each do |name, query|
    entries[name.to_s] = compile_one!(name:, query:, force:, prune:, logica_version: version)
  end

  manifest = Manifest.build(
    engine: @config.engine,
    logica_version: version,
    queries: entries
  )
  Manifest.write!(@config.manifest_path, manifest)
  manifest
end

#compile_one!(name:, query:, force: false, prune: true, logica_version: self.logica_version) ⇒ Object 



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# File 'lib/logica_compiler/compiler.rb', line 49

def compile_one!(name:, query:, force: false, prune: true, logica_version: self.logica_version)
  out_dir = @config.output_dir_path
  FileUtils.mkdir_p(out_dir)

  program_path = @config.absolute_path(query.program)
  program_source = File.read(program_path)
  validate_program_engine!(program_source)

  digest_hex = compute_digest(program_source:, predicate: query.predicate, engine: @config.engine, logica_version:)
  digest = "sha256:#{digest_hex}"

  sql_filename = "#{name}-#{digest_hex}.sql"
  meta_filename = "#{name}-#{digest_hex}.meta.json"
  sql_path = out_dir.join(sql_filename)
  meta_path = out_dir.join(meta_filename)

  return existing_entry_for(name:) if !force && entry_exists?(name:, digest_hex:)

  prune_old_artifacts!(name:, keep_digest_hex: digest_hex) if prune

  compiled_sql = compile_via_cli!(program_source:, predicate: query.predicate, timeout: compile_timeout)
  compiled_sql = normalize_sql(compiled_sql)

  sql_with_header = add_sql_header(
    sql: compiled_sql,
    name: name.to_s,
    program: query.program,
    predicate: query.predicate,
    engine: @config.engine,
    digest:
  )
  SqlSafety.validate!(sql_with_header)

  File.write(sql_path, sql_with_header)

  meta = {
    name: name.to_s,
    program: query.program,
    predicate: query.predicate,
    engine: @config.engine,
    compiled_at: Time.now.utc.iso8601,
    compiler: { bin: @config.logica_bin, version: logica_version },
    digest: digest,
  }
  File.write(meta_path, "#{JSON.pretty_generate(meta)}\n")

  { "digest" => digest, "sql" => sql_filename, "meta" => meta_filename }
end

#logica_version ⇒ Object 



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# File 'lib/logica_compiler/compiler.rb', line 98

def logica_version
  return @logica_version if @logica_version

  pinned = @config.pinned_logica_version
  return (@logica_version = pinned) if pinned && !pinned.to_s.strip.empty?

  # If LOGICA_BIN points to a venv-installed executable, infer the venv python and ask pip metadata.
  bin = @config.logica_bin.to_s
  if Util.path_like?(bin)
    venv_dir = File.expand_path("..", File.dirname(bin))
    python = File.join(venv_dir, Util.venv_bin_dir, "python")
    if File.executable?(python)
      stdout, _stderr, status =
        run_cmd_with_timeout!(
          [python, "-c", "import importlib.metadata as m; print(m.version('logica'))"],
          stdin_data: nil,
          timeout: 5
        )
      version = stdout.to_s.strip
      return (@logica_version = version) if status.success? && !version.empty?
    end
  end

  @logica_version = "unknown"
rescue StandardError
  @logica_version = @config.pinned_logica_version || "unknown"
end