protected registerProvider()

in src/main.ts [704:761]
53 lines of code
2 McCabe index (conditional complexity)

	protected registerProvider(options: undefined): Disposable {
		const client = this._client;

		let getMetadata = (ownerUri: string): Thenable<azdata.ProviderMetadata> => {
			let params: types.MetadataQueryParams = { ownerUri };
			return client.sendRequest(protocol.MetadataQueryRequest.type, params).then(
				client.sqlp2c.asProviderMetadata,
				e => {
					client.logFailedRequest(protocol.MetadataQueryRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let getDatabases = (ownerUri: string): Thenable<string[] | azdata.DatabaseInfo[]> => {
			let params: protocol.ListDatabasesParams = {
				ownerUri: ownerUri,
				includeDetails: true
			};
			return client.sendRequest(protocol.ListDatabasesRequest.type, params).then(
				r => { return r.databaseNames ? r.databaseNames : r.databases; },
				e => {
					client.logFailedRequest(protocol.ListDatabasesRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let getTableInfo = (ownerUri: string, metadata: azdata.ObjectMetadata): Thenable<azdata.ColumnMetadata[]> => {
			let params: protocol.TableMetadataParams = { objectName: metadata.name, ownerUri, schema: metadata.schema };
			return client.sendRequest(protocol.TableMetadataRequest.type, params).then(
				r => r.columns,
				e => {
					client.logFailedRequest(protocol.TableMetadataRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let getViewInfo = (ownerUri: string, metadata: azdata.ObjectMetadata): Thenable<azdata.ColumnMetadata[]> => {
			let params: protocol.TableMetadataParams = { objectName: metadata.name, ownerUri, schema: metadata.schema };
			return client.sendRequest(protocol.ViewMetadataRequest.type, params).then(
				r => r.columns,
				e => {
					client.logFailedRequest(protocol.ViewMetadataRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		return azdata.dataprotocol.registerMetadataProvider({
			providerId: client.providerId,
			getDatabases,
			getMetadata,
			getTableInfo,
			getViewInfo
		});
	}