registry
- BrightSign TechDocs
The registry object allows you to read from and write to the player registry (i.e. the persistent memory). The registry consists of named registry sections, and each registry section contains entries (key/value pairs).
registry IDL
interface Registry {
Promise<String> read(String sectionName, String key);
Promise<RegistrySection> read(String sectionName);
Promise<RegistryObject> read();
Promise<void> write(String sectionName, String key, String value);
Promise<void> write(String sectionName, RegistrySection section);
Promise<void> write(RegistryObject);
Promise<void> flush();
};ON THIS PAGE
Object Creation
To create a registry object, first load the brightsign/registry module using the require() method. Then create an instance of the registry class.
var registryClass = require("@brightsign/registry");
var registry = new registryClass();Registry
Use this interface for registry read/write operations.
All section and key names are canonicalized to lowercase.
read()
Promise<String> read(String sectionName, String key)Returns the string registry value associated with the specified key. You must also specify the registry section where the key is stored.
Returns the specified registry section in the following format: RegistrySection.{entry_key}.
Returns all registry sections in the following format: RegistryObject.{section_name}.{entry_key}.
write()
Writes a single registry entry to the specified registry section.
Writes the specified registry section to the registry. If the registry section does not exist, it will be created; otherwise, the entries will be added or updated in the existing registry section (preexisting registry entries that are not specified in the write operation will be unaffected).
Writes the specified registry sections/entries to the registry. Registry sections and entries that do not exist will be created, and existing entries will be updated (preexisting registry sections/entries that are not specified in the write operation will be unaffected).
The single-entry write() method will not perform well when used to write multiple entries successively. For optimal performance, use the single-section write() method to write multiple entries to a single section and the full-registry method to write to multiple sections.
Sixty seconds at most after a write to the registry, or before an orderly reboot, the newly written data will be automatically be written out to persistent storage. If for some reason, a set of registry changes must be written immediately, then the flush() method should be called after the last one.
flush()
Flushes the contents of the registry immediately to persistent storage.
Example