SchemaController Class — fastify Architecture

Source Code

lib/schema-controller.js lines 40–161

class SchemaController {
  constructor (parent, options) {
    this.opts = options || parent?.opts
    this.addedSchemas = false

    this.compilersFactory = this.opts.compilersFactory

    if (parent) {
      this.schemaBucket = this.opts.bucket(parent.getSchemas())
      this.validatorCompiler = parent.getValidatorCompiler()
      this.serializerCompiler = parent.getSerializerCompiler()
      this.isCustomValidatorCompiler = parent.isCustomValidatorCompiler
      this.isCustomSerializerCompiler = parent.isCustomSerializerCompiler
      this.parent = parent
    } else {
      this.schemaBucket = this.opts.bucket()
      this.isCustomValidatorCompiler = this.opts.isCustomValidatorCompiler || false
      this.isCustomSerializerCompiler = this.opts.isCustomSerializerCompiler || false
    }
  }

  // Bucket interface
  add (schema) {
    this.addedSchemas = true
    return this.schemaBucket.add(schema)
  }

  getSchema (schemaId) {
    return this.schemaBucket.getSchema(schemaId)
  }

  getSchemas () {
    return this.schemaBucket.getSchemas()
  }

  setValidatorCompiler (validatorCompiler) {
    // Set up as if the fixed validator compiler had been provided
    // by a custom 'options.compilersFactory.buildValidator' that
    // always returns the same compiler object. This is required because:
    //
    // - setValidatorCompiler must immediately install a compiler to preserve
    //   legacy behavior
    // - setupValidator will recreate compilers from builders in some
    //   circumstances, so we have to install this adapter to make it
    //   behave the same if the legacy API is used
    //
    // The cloning of the compilersFactory object is necessary because
    // we are aliasing the parent compilersFactory if none was provided
    // to us (see constructor.)
    this.compilersFactory = Object.assign(
      {},
      this.compilersFactory,
      { buildValidator: () => validatorCompiler })
    this.validatorCompiler = validatorCompiler
    this.isCustomValidatorCompiler = true
  }

  setSerializerCompiler (serializerCompiler) {
    // Set up as if the fixed serializer compiler had been provided
    // by a custom 'options.compilersFactory.buildSerializer' that
    // always returns the same compiler object. This is required because:
    //
    // - setSerializerCompiler must immediately install a compiler to preserve
    //   legacy behavior
    // - setupSerializer will recreate compilers from builders in some
    //   circumstances, so we have to install this adapter to make it
    //   behave the same if the legacy API is used
    //
    // The cloning of the compilersFactory object is necessary because
    // we are aliasing the parent compilersFactory if none was provided
    // to us (see constructor.)
    this.compilersFactory = Object.assign(
      {},
      this.compilersFactory,
      { buildSerializer: () => serializerCompiler })
    this.serializerCompiler = serializerCompiler
    this.isCustomSerializerCompiler = true
  }

  getValidatorCompiler () {
    return this.validatorCompiler || (this.parent && this.parent.getValidatorCompiler())