Binary ultra product key
This documentation guides a developer through the steps necessary to develop Snaps for the Binary ultra product key Elastic Integration Platform. SnapLogic Snaps are modular collections of integration components built for a specific application or data source. Snaps shield both business users and developers from much of the complexity of the underlying application, data model, and service.
Snaps may be related by functionality or share common code. A Snap Pack may contain a single Snap or multiple Snaps. Snaps are streaming data processors. They have metadata that define their view settings and configuration. Please visit the official SnapLogic documentation for detailed instructions for installing a Snaplex on Linux or Microsoft Windows. For approved customers, SnapLogic Binary ultra product key will provide the necessary instructions for authentication and configuration of the Snaplex.
If successful, the output of the java command will be similar to this:. The simplest way to start the Snaplex binary ultra product key to run the packaged jcc. To check if the Snaplex started correctly, log in to the SnapLogic Dashboard:. At its most basic, a Snap class declares the required name, binary ultra product key, version and category metadata annotations and implements the Snap interface. Snap interface that should be implemented by the Snap developers to convert binary ultra product key business logic into an entity that can be used inside SnapLogic Pipelines.
Defines the Snap properties using the given PropertyBuilder. This method is called during the compile phase and generates the settings Snap schema property that the SnapLogic Designer uses to build the user interface. Input validation should be done here - if there is an issue with the provided input, a ConfigurationException should be thrown. Should an error be encountered, an ExecutionException may be thrown. Cleans up any suitable resources after the Snap execution.
Again, should an error be encountered, an ExecutionException may be thrown. A Maven Archetype is a Maven project templating toolkit. SnapLogic binary ultra product key SnapArchetype for quickly starting Snap development.
SnapArchetype ships with eight sample Snaps for demonstration purposes:. You should not need to alter these files. A customer will be deploying to an Organization root, Project, or Project Spaces asset path e.
Files and folders within these directories will be on the classpath, as per Maven convention. This is where you will write your Snap code. Files and folders within these directories will be on the test classpath, as per Maven convention. Unit and integration tests and supporting resources are located in these directories. This is the Maven POM file.
You will change this file binary ultra product key registering new Snaps and Accounts, when new dependencies or plugins are required, or when needing to modify the build properties. It is an uncomplicated Snap that generates a single document, without requiring any input data or user input.
It implements the Snap interface. Snap Anatomy explains the purpose of each annotation and the overridden methods. The comments above each annotation describe their specific usage for this Snap.
At build time, defineProperties is called to generate the Snap Schema. Next, Guice injects the various binary ultra product key dependency instances documentUtility and outputViews in this Snap.
Next, the execute method is called. Finally, the cleanup method is called to clean-up any resources used. Due to no user input being required, nor clean-up needed, the definePropertiesconfigureand cleanup methods have no implementation for this Snap.
The execute method increments an int member variable, logs a debug statement, creates data, and generates a new Document with this data to be subsequently written to the binary ultra product key view.
For Snaps that have input views and process documents, you should preserve data lineage required by Ultra Pipelines between the new output document to be written and binary ultra product key incoming original document by using one of the highlighted DocumentUtility methods:.
Establishes lineage between the new document and the incoming original document, but discards the incoming binary ultra product key Similarly to DocumentUtilityoutput views can establish lineage between incoming and outgoing documents. This is useful when an outgoing Document has been created without binary ultra product key but the incoming original document is still accessible:.
The test method binary ultra product key take a single TestResult argument, which can be used within the test to determine whether the correct output was written using an OutputRecorderbinary ultra product key errors occurred etc.
In the SingleDocGeneratorTest sample provided, we can see that the test method focuses on examining that the TestResult did not receive any thrown exceptions, and that the declared output view registered the expected number of documents processed.
If the Snap has more than one view, a ViewException is thrown. An Iterator of Document objects can then be acquired by asking the InputViews instance for the Document objects associated binary ultra product key the specified InputView instance. Iterating over the Document objects, the Snap logs that a document was consumed and increments its AtomicInteger counter. The cleanup method, which is called after the Binary ultra product key has completed its execution phase, logs the total number of documents consumed.
Now that we understand the basics of a Snap, we can extend the SimpleSnap class to have some of the heavy lifting done for us.
SimpleSnap provides all the necessary hooks for binary ultra product key a new Snap. A Snap author can write a new Snap by simply extending SimpleSnapadding the desired metadata annotations SimpleSnap already declares an Errors view that can be overriddenand providing the implementation for the process method and optionally, for the defineProperties and configure methods too. SimpleSnap takes care of iterating over the incoming documents if any and allowing you to process each document at a time.
While JSON-based Documents offer the greatest flexibility of manipulating data within a pipeline, Binary data has advantages too. The costs associated with parsing and formatting data to JSON are avoided, and it can allow easier integration with processes running externally to the pipeline.
The CharacterCounter sample Snap shown demonstrates writing to a binary output view. It counts the number of times each letter of the English alphabet appears in the incoming binary data, and then writes the results to the binary output view or, if there were any exceptions, creates an error Document and writes that to the error view.
The CharacterCounter class above extends the abstract SimpleBinaryWriteSnap class which, similarly to Bootstrapping with SimpleSnapprovides some sensible default values for metadata annotations and some initial implementation. The BinaryInput contains a ReadableByteChannel which can read the bytes of the incoming binary data and a Document header containing basic metadata content-type etc.
When creating BinaryOutput instances, a Document header should be created and returned in getHeader. The DocGenerator Snap is similar to the SingleDocGenerator Snap, binary ultra product key the number of documents generated is configurable through user input:. As described earlierdefineProperties is called when the Snap is being built. Once the user has input their data and the Snap is executing, the configure method can access the data through the provided PropertyValues instance.
See the PropertyBuilder Reference section for more examples. If more advanced validation is required, provide the implementation in the configure method and throw a ConfigurationException when invalid input is encountered.
The countValueExp expression property is evaluated against null as there is no incoming document to evaluate against e. Since a number value was evaluated, we assign it to a local variable of type BigIntegerand then get its intValue.
Within executewe can then use the count in the loop. For composite and table propertiesthe getExpressionPropertyFor method can be used to evaluate child properties embedded in a parent. This is useful to lookup appropriate values using either another data source or the input value of a different property. The suggest capability is enabled through use of the the PropertyBuilder. Implementations of the Suggestions interface should be provided to it.
The Suggestions instance often an anonymous instance implements the single suggest method. It provides, as method arguments, references to the SuggestionBuilder and the PropertyValues. Using the SuggestionBuilder instance, we can configure simple String varargs for suggestions for a selected node that will result in a list of suggested values. To add suggestions to a Table element property, select the table node and use the over builder method:.
When understanding how to use a Schema, you must first understand how declaring an input or output schema affects the Snaps in the pipeline immediately preceding and following, respectively.
Mapper immediately preceding it in the pipeline. This allows the user the opportunity to shape the data to the desired form:. This interface has a defineInputSchema method, where the Binary ultra product key argument can be used to create child schemas and add them to the provider through a SchemaBuilder.
Defining the schema as above will aid users in understanding what should be the structure of the data entering and exiting the Snap.
However, the Snap will not reject data that does not conform to the schema. In the SchemaExample sample above, the validate method is called before the data binary ultra product key written to the output view.
It checks that the incoming document has the properties declared in the binary ultra product key present colAcolBand colC. If the input data does not contain all of those keys, a SnapDataException is thrown and the document is written to the error view:.
SnapException is the root exception type and extends RuntimeException. However, you should instead use one of the following implementations instead:. ConfigurationException instances should be thrown during configurewhen the pipeline is validating:. Throwing a new SnapDataException and writing it to the error view along with the input document that generated the data error, will display both the exception stacktrace and the original data.
If your Snap extends SimpleSnapit is even easier - just throw the SnapDataException and it will be written to the error view as above:. ExecutionUtil iterates over the available input views and send each document to the process method, as shown previously. If you can guarantee that each input view will have documents binary ultra product key to it, this is an acceptable solution.
It is rarely a good idea to prevent either an input or an output view for a Snap. For one, it prevents using that Snap as unlinked input at the beginning of a Task pipelineand restricts its ability to be used mid-pipeline.