axway-schema

A singleton module for loading custom schemas and resolving them to json-schema docs

API Reference

Example (Quick start)

 const schemas = require('axway-schema');
 schemas.add('./schemas/foo.json')
	  .add('./schemas/bar.json', 'schema://myservice/bar')
	  .add('./schemas/swagger-v2.0.json')
	  .loadSync();
 schemas.get('schema:///foo');
 schemas.validate('schema:///foo', foo);
 schemas.get('schema:///foo/myservice/bar');
 schemas.validate('schema:///foo/myservice/bar', bar);
 schemas.get('http://swagger.io/v2/schema.json#');
 schemas.validate('http://swagger.io/v2/schema.json#', swagger);
 schemas.dereference(swagger);
 schemas.dereference(swagger, { target: '#/definitions' });
 schemas.dereference(swagger, { target: '#/definitions', rename: (id) => { return 'foo'; } });

axway-schema~AxwaySchema

A schema manager.

Kind: inner class of axway-schema
Access: public

• ~AxwaySchema
  • new AxwaySchema()
  • .setLogger(logger)
  • .add(item, [defaultId]) ⇒ AxwaySchema
  • .register(schema) ⇒ AxwaySchema
  • .loadSync() ⇒ AxwaySchema
  • .clear() ⇒ AxwaySchema
  • .exists(id) ⇒ boolean
  • .get([id]) ⇒ object
  • .validate(id, obj) ⇒ string
  • ._updateRef(doc, ref, refpath, encodedRef)
  • .dereference(doc, [options]) ⇒ object
  • .getErrorString(errors, objectType) ⇒ string

new AxwaySchema()

Constructs a schema manager. The instance is a singleton.

axwaySchema.setLogger(logger)

Sets the Logger

Kind: instance method of AxwaySchema
Access: public

Param	Type	Description
logger	Logger	A logger.

axwaySchema.add(item, [defaultId]) ⇒ AxwaySchema

Adds an item to be loaded later by calling loadSync. The item can be a string, in which case it is a schema file, and an optional defaultId will be used for the id if the file does not have an id. If the file does not have an id and no defaultId is supplied, the function will throw.

If the item is an object, it is a valid schema that has an id defined so that it can be referenced later. In this case, defaultId is ignored.

Kind: instance method of AxwaySchema
Returns: AxwaySchema - The AxwaySchema object.
Access: public

Param	Type	Description
item	string | object	The item to add (a filename or schema).
[defaultId]	string	The item id if one not supplied.

Example (Add a schema)

 const schemas = new AxwaySchema();
 schemas.add('./schema1.json');
 schemas.add('./schema2.json', 'schema://service/myapp/schema2.json');
 schemas.add({id: 'http://axway.com/schemas/user.json'});

axwaySchema.register(schema) ⇒ AxwaySchema

Registers a global schema that will persist across calls to clear operations. Schemas registered with the same id will generate a warning but will be ignored.

Kind: instance method of AxwaySchema
Returns: AxwaySchema - The AxwaySchema object.

Param	Type	Description
schema	object	The schema.

axwaySchema.loadSync() ⇒ AxwaySchema

Loads all schemas previously added with calls to add.

Kind: instance method of AxwaySchema
Returns: AxwaySchema - The AxwaySchema object.
Access: public
Example (Load schemas)

 const schemas = new AxwaySchema();
 schemas
	  .add('./schema1.json');
	  .add('./schema2.json', 'service');
	  .loadSync());

axwaySchema.clear() ⇒ AxwaySchema

Clears all schemas and resets state. All registered schema will be automatically re-added on next load.

Kind: instance method of AxwaySchema
Returns: AxwaySchema - The AxwaySchema object.
Access: public

axwaySchema.exists(id) ⇒ boolean

Tests whether or not a schema is loaded, identified by id.

Kind: instance method of AxwaySchema
Returns: boolean - True if the schema exists.
Access: public

Param	Type	Description
id	string	The schema identifier to test.

axwaySchema.get([id]) ⇒ object

Gets a schema by id. If id is not supplied, all schemas are returned.

Kind: instance method of AxwaySchema
Returns: object - Returns a schema identified by id.
Access: public

Param	Type	Description
[id]	string	The schema identifier.

axwaySchema.validate(id, obj) ⇒ string

Validates an object obj against a schema previously added with add or register and identified by id, or if id is a JSON schema object, obj is validated against that.

Kind: instance method of AxwaySchema
Returns: string - Returns an error string when not valid, undefined otherwise.
Access: public

Param	Type	Description
id	string | object	The schema identifier or object.
obj	*	The object to validate.

axwaySchema._updateRef(doc, ref, refpath, encodedRef)

Updates the reference with its encoded equivalent.

Kind: instance method of AxwaySchema

Param	Type	Description
doc	Object	the doc to be updated
ref	Object	reference details
refpath	string	the path to be replaced
encodedRef	string	the new path

axwaySchema.dereference(doc, [options]) ⇒ object

Dereferences non-local references in the supplied document. The supplied document is not modified. All non-local references (e.g schema://) will be replaced with the corresponding loaded schema. If schema are not found, an error will be thrown.

If options.target is not supplied, then references are expanded inline. If options.target is supplied, then references are expanded in the location specified by options.target and any existing reference updated to point to the new target. For example, if the options.target is #/definitions, then the schema will be expanded to $.definitions with the name of the schema the trailing component (basename) of its id, or if options.rename is supplied, the name returned by that.

Kind: instance method of AxwaySchema
Returns: object - Returns a document with schema:// references expanded.
Access: public

Param	Type	Description
doc	object	A document
[options]	object	Options
[options.target]	string	A target
[options.rename]	targetRenameCallback	A callback to rename schema

axwaySchema.getErrorString(errors, objectType) ⇒ string

The ajv.errorsText is actually not very good.

Kind: instance method of AxwaySchema
Returns: string - A formatted error string.
Access: public

Param	Type	Description
errors	array	ajv errors object
objectType	string	The name of the object type that was validated

axway-schema~targetRenameCallback ⇒ string

Callback function to rename a target when used as a dereference target. For example, if your id is "schema://svc.foo/bar", then bar will be written to the dereference target as bar. If you want to rename bar, then use this function.

Kind: inner typedef of axway-schema
Returns: string - Return the renamed target.
Access: public

Param	Type	Description
id	id	The schema id.

Building

npm run build

Author

Axway [e-mail] https://axway.com

License

This code is proprietary, closed source software licensed to you by Axway. All Rights Reserved. You may not modify Axway’s code without express written permission of Axway. You are licensed to use and distribute your services developed with the use of this software and dependencies, including distributing reasonable and appropriate portions of the Axway code and dependencies. Except as set forth above, this code MUST not be copied or otherwise redistributed without express written permission of Axway. This module is licensed as part of the Axway Platform and governed under the terms of the Axway license agreement (General Conditions) located here: https://support.axway.com/en/auth/general-conditions; EXCEPT THAT IF YOU RECEIVED A FREE SUBSCRIPTION, LICENSE, OR SUPPORT SUBSCRIPTION FOR THIS CODE, NOTWITHSTANDING THE LANGUAGE OF THE GENERAL CONDITIONS, AXWAY HEREBY DISCLAIMS ALL SUPPORT AND MAINTENANCE OBLIGATIONS, AS WELL AS ALL EXPRESS AND IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED INFRINGEMENT WARRANTIES, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND YOU ACCEPT THE PRODUCT AS-IS AND WITH ALL FAULTS, SOLELY AT YOUR OWN RISK. Your right to use this software is strictly limited to the term (if any) of the license or subscription originally granted to you.