工作流执行报告

对于执行时间较长的复杂工作流，向执行工作流的用户提供明确的进度信息可能比较有用。要允许通过这种方式报告工作流的执行情况，execute 成员应该返回步骤数组。每个数组元素必须包含以下成员：

与整个工作流上的 execute 函数一样，每个步骤的 execute 成员都将包含工作流参数的对象作为参数。例如，下面的工作流通过三个步骤创建新的项目、共享资源和审计记录：

var steps = [ {
	step: 'Checking for associated project',
	execute: function (params) {
		try {
			run('shares select ' + params.unit);
		} catch (err) {
			if (err.code != EAKSH_ENTITY_BADSELECT)
				throw (err);

			/*
			 * We haven't yet created a project that corresponds to
			 * this business unit; create it now.
			 */
			run('shares project ' + params.unit);
			set('mountpoint', '/export/' + params.unit);
			run('commit');
			run('shares select ' + params.unit);
		}
	}
}, {
	step: 'Creating share',
	execute: function (params) {
		run('filesystem ' + params.name);
		run('commit');
	}
}, {
	step: 'Creating audit record',
	execute: function (params) {
		audit('created "' + params.name + '" in "' + params.unit);
	}
} ];

var workflow = {
	name: 'Create share',
	description: 'Creates a new share in a business unit',
	parameters: {
		name: {
			label: 'Name of new share',
			type: 'String'
		},
		unit: {
			label: 'Business unit',
			type: 'ChooseOne',
			options: [ 'development', 'finance', 'qa', 'sales' ],
			optionlabels: [ 'Development', 'Finance',
			    'Quality Assurance', 'Sales/Administrative' ],
		}
	},
	validate: function (params) {
		try {
			run('shares select ' + params.unit);
			run('select ' + params.name);
		} catch (err) {
			if (err.code == EAKSH_ENTITY_BADSELECT)
				return;
		}

		return ({ name: 'share already exists' });
	},
	execute: function (params) { return (steps); }
};