DynamoDB Bulk Get

On this Page

Snap type:

Write 

Description:

This Snap provides the ability to read data from a DynamoDB table. The table becomes suggestible once the account is defined.

  • Expected upstream Snaps: Any Snap that provides a document output view, such as Structure or a JSON Generator Snap.
  • Expected downstream Snaps: Any Snap that has a document input view, such as Filter or Data or JSON Formatter.
  • Expected input: The table schema is suggested on input view. The attribute values for the attributes of the table for each record are passed from input view.
  • Expected output:  This Snap provides the result of the Bulk Write operation for each request. Errors can be routed to the error view if enabled or cause the Snap to fail during execution. 
Prerequisites:

None 

Support and limitations:Works in Ultra Tasks.
Account: 

This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. 

See DynamoDB Account for information on setting up this type of account. 

Views:
InputThis Snap has exactly one document input view.
OutputThis Snap has exactly one document output view.
ErrorThis Snap has at most one document error view and produces zero or more documents in the view.

Settings

Label 

Required. The name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your pipeline.

Table name


Required. The name of the table to write the data into. This property is suggestible, which shows the list of the tables in db.
Example: Thread
Default value: [None] 

Thread count

This property represents the total number of parallel threads to be created for Bulk Get operation.
Example: 2
Default value: None 

Projection expression


String that identifies one or more attributes to retrieve from the specified table. If more than one attribute is to be retrieved then those should be separated by commas.
Example: LastPostDateTime, ForumName, Subject
Default value: None  

Batch Size


Number of records batched for each request.
Example: 25
Default value: None 

Expression attribute values

Specify the placeholders for the Expression Attribute Names and/or Expression Attribute Values. 

DynamoDB reserves certain words and they are called reserved words. You must not use reserved words as attribute names in expressions. If you must write an expression that contains a word that conflicts with a DynamoDB reserved word, then you can define an expression attribute name to use in the place of the reserved word. For more information, see Expression Attribute Names.

Similarly, you cannot use certain values as attribute values in expressions and instead must define an expression attribute name. For more information, see Expression Attribute Values.

Click + to enter:

  • Attribute: The expression attribute name. Begins with a # for names and : for values. 
  • Type: The attribute type. Blank for Expression Attribute Names. S for string, N for number, and so on, for Values.
  • Value: The actual literal to be used in the bulk get condition.


Example

If your table contains a column named uuid (a reserved word) and you want to read a value from the uuid column, then you must assign a placeholder for the column name because you cannot use a reserved word directly in your expression. We can define the Attribute #U, leave the Type blank, and enter the value as uuid. In the Snap Projection expression condition, we enter #U.

Attribute
 Type
Value
 #U uuid

Snap execution

Select one of the three modes in which the Snap executes. Available options are:

  • Validate & Execute: Performs limited execution of the Snap, and generates a data preview during Pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during Pipeline runtime.
  • Execute only: Performs full execution of the Snap during Pipeline execution without generating preview data.
  • Disabled: Disables the Snap and all Snaps that are downstream from it.

Example 


In this pipeline, the DynamoDB Bulk Get Snap reads the records from a specific table. The Mapper is reconfigured to match the target schema and provided with a value from the DynamoDB table for the Bulk Get Snap to output data correctly.

The Mapper Snap maps the value for the table student to retrieve the records that matches the condition:

(Ensure to map the target schema to the specified expression for a successful output preview)

The DynamoDB Bulk Get Snap reads the records from the table, student with the mapped expression from the upstream Snap:

The successful execution of the pipeline displays the below output preview: 

   


Snap Pack History

 Click to view/expand
Release Snap Pack VersionDateType  Updates
November 2024main29029 StableUpdated and certified against the current SnapLogic Platform release.
August 2024main27765 StableUpdated and certified against the current Snaplogic Platform release.
May 2024main26341 StableUpdated and certified against the current SnapLogic Platform release.
February 2024main25112 StableUpdated and certified against the current SnapLogic Platform release.
November 2023main23721 StableUpdated and certified against the current SnapLogic Platform release.

August 2023

main22460

 


Stable

Updated and certified against the current SnapLogic Platform release.

May 2023main21015 StableUpgraded with the latest SnapLogic Platform release.

February 2023

main19844 StableUpgraded with the latest SnapLogic Platform release.
January 2023431patches19383 Latest

The DynamoDB Snap Pack supports the IAM role in the DynamoDB account.

November 2022main18944 StableUpgraded with the latest SnapLogic Platform release.
430 Patch430patches18355 LatestThe lineage for Ultra Pipelines containing the DynamoDB Bulk Get and DynamoDB Bulk Write Snaps is now preserved only when the Batch Size is 1.
430 Patch430patches18211 Latest

The DynamoDB Bulk Write Snap now does not fail with the Duplicate keys <table-name> are provided error when the Batch size or the Thread count is high.

August 2022main17386 StableThe DynamoDB Account includes AWS Security Token field to pass the security token when making calls using temporary credentials.
4.29 Patch429patches16169 Latest

Fixed an issue with the DynamoDB Snaps where the Snaps did not route the errors to the error view when the Snap encountered an exception and the Pipeline failed. Now the Snap route the errors to the error view and does not fail when it encounters an exception. If the error view is disabled, Snap stops the execution.

4.29 Patch

429patches15954 Latest

Enhanced the DynamoDB Account with AWS Security Token field to pass the security token when making calls using temporary credentials.

4.29main15993 Stable

Upgraded with the latest SnapLogic Platform release.

4.28main14627 StableUpgraded with the latest SnapLogic Platform release.

4.27

main12833

 StableUpgraded with the latest SnapLogic Platform release.
4.26426patches11593 LatestFixed an issue with the DynamoDB Update Snap, where the data type conversion for input keys caused an error.
4.26main11181 StableUpgraded with the latest SnapLogic Platform release.
4.25425patches10571 Latest

Updated the AWS SDK from version 1.11.688 to 1.11.1010 in the DynamoDB Snap Pack and added a custom SnapLogic User Agent header value.

4.25main9554
 
StableUpgraded with the latest SnapLogic Platform release.
4.24 Patch424patches9031 Latest
  • Supports autoscaling by adding retry logic with exponential backoff to the Snaps.
  • Enhanced the Dynamo DB Account  to support the expression enabler for account properties and creation of dynamic account.
  • Improved memory consumption in DynamoDB Bulk Write and Bulk Get Snaps.
4.24main8556
StableUpgraded with the latest SnapLogic Platform release.
4.23main7430
 
StableUpgraded with the latest SnapLogic Platform release.
4.22main6403
 
StableUpgraded with the latest SnapLogic Platform release.
4.21 Patch421patches5851 Latest

Removed the Snap timeout setting while waiting for the threads to complete processing.

4.21 Patchdynamodb8854 LatestFixed the DynamoDB Scan Snap pagination issue where the second page of output and beyond cannot be accessed during execution and validation.   
4.21snapsmrc542

 

StableUpgraded with the latest SnapLogic Platform release.
4.20 Patchdynamodb8709 Latest

Fixed the DynamoDB Scan Snap and the DynamoDB Update Snap where:

  • The DynamoDB Scan Snap is unable to produce a preview output on validation. (Instead, the Snap passes the output to the downstream Snap.)
  • The DynamoDB Update Snap produces two error documents for the same error during preview output.
4.20snapsmrc535
 
StableUpgraded with the latest SnapLogic Platform release.
4.19snaprsmrc528
 
StableUpgraded with the latest SnapLogic Platform release.
4.18 PatchMULTIPLE7778 Latest

Updated the AWS SDK library version to default to Signature Version 4 Signing process for API requests across all regions.

4.18snapsmrc523
 
StableUpgraded with the latest SnapLogic Platform release.
4.17ALL7402
 
Latest

Pushed automatic rebuild of the latest version of each Snap Pack to SnapLogic UAT and Elastic servers.

4.17snapsmrc515
 
Latest

Added the Snap Execution field to all Standard-mode Snaps. In some Snaps, this field replaces the existing Execute during preview check box.

4.16snapsmrc508
 
StableUpgraded with the latest SnapLogic Platform release.
4.15 Patchdynamodb6670 Latest

Added new functionality to the property Expression attribute values in the Delete Table Item, Scan, Update, and Bulk Get Snaps. The property now handles columns that are named after the DynamoDB reserve words.

4.15snapsmrc500
 
StableUpgraded with the latest SnapLogic Platform release.
4.14snapsmrc490
 
StableUpgraded with the latest SnapLogic Platform release.
4.13

snapsmrc486

 
StableUpgraded with the latest SnapLogic Platform release.
4.12

snapsmrc480

 
StableUpgraded with the latest SnapLogic Platform release.
4.11snapsmrc465
 
Stable

Added a new DynamoDB Query Snap with Secondary Index support.

4.10 Patchdynamodb3950 Latest

Resolved an issue with the DynamoDB Scan Snap which was not able to perform the scan operation on the table with huge amount of data (Actual description Error executing scan process, 0 after the 4.10 release)

4.10

snapsmrc414

 
Stable

DynamoDB ScanBulk WriteDelete Table Item and Update Snaps support the Set types (Binary, List and Map).

4.9 Patchdynamodb3329 Latest

DynamoDB Scan Snap - Fixed NPE during the Table name support.

4.9snapsmrc405
 
StableUpgraded with the latest SnapLogic Platform release.
4.8

snapsmrc398

 
Stable
  • Added the new Snaps DynamoDB Delete Table and DynamoDB Delete Table Item.
  • Info tab added to accounts.
  • Database accounts now invalidate connection pools if account properties are modified and login attempts fail.
4.7 Patchdynamodb2557 Latest

DynamoDB Bulk Get now writes the original object to error view and output view on error.

4.7 Patchdynamodb2279 Latest

Addressed a issue with generated signatures when non-ASCII data is used and ensured the original document is passed the Error View.

4.7

snapsmrc382

 
Stable

Updated the DynamoDB Bulk Get Snap with the new field, Batch Size.

4.6snapsmrc362
 
StableUpgraded with the latest SnapLogic Platform release.
4.5

snapsmrc344

 
Stable

All database Snaps have had updates in connection pooling.

4.4.1NA StableUpgraded with the latest SnapLogic Platform release.
4.4NA Stable
  • Resolved an issue with the DynamoDB account not validating if credentials did not have access to ListTables operation.
  • Added expression support to the Where clause property for Select Snaps.
4.3.2NA Stable
  • DynamoDB Bulk Write Snap now has Batch size and Request delay properties to help control the speed of the bulk write.
4.2.2NANAStable
  • Resolved an issue with the DynamoDB Scan Snap throwing an exception if Total segments was provided.
  • Resolved an issue with the DynamoDB Scan Snap not returning the specified attribute names list if Projection expression was set to an attribute name.