Skeleton code structure for Glue L2 construct

packages/@aws-cdk/aws-glue-alpha/lib/conditionaltrigger.ts

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+/**
+ * Conditional Trigger Class
+ *
+ * Conditional triggers have a predicate and actions associated with them. 
+ * When the predicateCondition is true, the trigger actions will be executed.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/constants.ts

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+/**
+ * Enums used by Job Types/Triggers
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/flexjob.ts

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+/**
+ * Flex Jobs class
+ *
+ * Flex jobs supports Python and Scala language. 
+ * The flexible execution class is appropriate for non-urgent jobs such as 
+ * pre-production jobs, testing, and one-time data loads. 
+ * Flexible job runs are supported for jobs using AWS Glue version 3.0 or later and G.1X or 
+ * G.2X worker types but will default to the latest version of Glue (currently Glue 3.0.) 
+ *
+ * Similar to ETL, we’ll enable these features: —enable-metrics, —enable-spark-ui, 
+ * —enable-continuous-cloudwatch-log
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/notifyeventtrigger.ts

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+/**
+ * Notify Event Trigger Class
+ *
+ * Workflows are mandatory for this trigger type. There are two types of notify event triggers, 
+ * batching and non-batching trigger. 
+ * For batching triggers, developers must specify BatchSize but for non-batching BatchSize will 
+ * be set to 1. 
+ * For both triggers, BatchWindow will be default to 900 seconds.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/ondemandtrigger.ts

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+/**
+ * On Demand Trigger Class
+ *
+ * On demand triggers can start glue jobs or crawlers. 
+ * The trigger method will take an optional description but abstract the requirement of an 
+ * actions list using the job or crawler objects using conditional types.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/pythonshelljob.ts

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+/**
+ * Python Shell Jobs class
+ *
+ * A Python shell job runs Python scripts as a shell and supports a Python version that 
+ * depends on the AWS Glue version you are using. 
+ * This can be used to schedule and run tasks that don't require an Apache Spark environment.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/rayjob.ts

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+/**
+ * Ray Jobs class
+ *
+ * Glue ray only supports worker type Z.2X and Glue version 4.0. 
+ * Runtime will default to Ray2.3 and min workers will default to 3.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/scheduledtrigger.ts

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+/**
+ * Scheduled Trigger Base Class
+ *
+ * Schedule triggers are a way for developers to create jobs using cron expressions. 
+ * We’ll provide daily, weekly, and monthly convenience functions, as well as a custom function 
+ * that will allow developers to create their own custom timing using the existing 
+ * event Schedule object without having to build their own cron expressions. 
+ *
+ * The trigger method will take an optional description and list of Actions 
+ * which can refer to Jobs or crawlers via conditional types.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/sparketljob.ts

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+/**
+ * Spark ETL Jobs class
+ *
+ * ETL jobs supports Python and Scala language. 
+ * ETL job type supports G1, G2, G4 and G8 worker type default as G2, which customer can override. 
+ * It wil default to the best practice version of ETL 4.0, but allow developers to override to 3.0. 
+ * We will also default to best practice enablement the following ETL features: 
+ * —enable-metrics, —enable-spark-ui, —enable-continuous-cloudwatch-log.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/streamingjob.ts

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+/**
+ * Streaming Jobs class
+ *
+ * A Streaming job is similar to an ETL job, except that it performs ETL on data streams 
+ * using the Apache Spark Structured Streaming framework. 
+ * These jobs will default to use Python 3.9.
+ *
+ * Similar to ETL jobs, streaming job supports Scala and Python languages. Similar to ETL, 
+ * it supports G1 and G2 worker type and 2.0, 3.0 and 4.0 version. We’ll default to G2 worker 
+ * and 4.0 version for streaming jobs which developers can override. 
+ * We will enable —enable-metrics, —enable-spark-ui, —enable-continuous-cloudwatch-log.
+ *
+ */

packages/@aws-cdk/aws-glue-alpha/lib/trigger.ts

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+/**
+ * Workflow Trigger Base Class
+ *
+ * In AWS Glue, developers can use workflows to create and visualize complex extract, 
+ * transform, and load (ETL) activities involving multiple crawlers, jobs, and triggers.
+ *
+ */