This MettleCI capability takes a specified set of input ISX files and modifies them based on instructions provided in a supplied YAML Recipe file. The first public interface to the Transmuter function will be made This feature is available from the MettleCI command line.
Command
From command-shellthe MettleCI Command Line, run the asset-transformer transform with command, supplying values for these parameters:
-isx: path to an ISX archive or directory containing archives
-user: DataStage user to credit changes to
-transforms: path to a YAML-format Recipe file describing transforms the changes to perform
YAML file
This file should contain a list at the top level.
Each item in the list should have a property transform, containing the name of
a transform, and other properties required by that transform.
E.g:
...
Example
Assume the following:
getmsg.isxcontains a Parallel Routine definition containing the targetfilepathstring we wish to replceu915264is the valid DataStage user that we wish to credit for the last save in the routine definitionRecipe file
changeLibFileInfo.ymlcontains:Code Block - transform:
...
SearchAndReplace
...
xpath: /
...
[contains(name(),'DSRoutineSDO')]/@modulePath
...
searchString:
...
Transforms
The functions from which Recipes will be built are described below:
...
Transform
...
Description
...
Parameters
...
AppendToAttribute
...
Append a string value to an attribute.
...
xpath: Path to the attribute in the XML to modify
appendString: String to append to the current value of the attribute
...
PrependToAttribute
...
Prepend a string value to an attribute.
...
xpath: Path to the attribute in the XML to modify
prependString: String to prepend to the current value of the attribute
...
SearchAndReplace
...
Perform a regex search/replace on a text node (i.e. attribute or element with text content). If an element with child elements is provided by the xpath, the child elements will all be removed by this operation.
...
xpath: Path to the text node in the XML to apply search and replace
searchString: Regex search string
replaceString: Regex replace string
...
InsertElement
...
Adds an XML element as a child to a specified parent element.
...
xpath: Path to the parent node. The provided element will be a child of this node
element: XML element to insert (as a string)
...
InsertAttribute
...
Adds an attribute to an XML element. If the attribute already exists it will be overwritten.
...
xpath: Path to the element to add attribute to
attributeName: name of the attribute to add
attributeValue: value of the attribute to add
...
RemoveElement
...
Removes an XML element from the document.
...
xpath: Path to the element to remove.
...
RemoveAttribute
...
Removes an attribute from an existing element.
...
xpath: Path to the element the attribute is in.
attributeName: Name of the attribute to remove.
Recipes
...
Name
...
Config File
...
Description
...
Change prefetch memory
...
recipes/change_prefetchmemory.yaml
...
Change the prefetch memory setting for an ORAOCI9 stage to 102,400,000
Fix ODBC SQL placeholder issue
...
recipes/fix_odbc_sql_parameter_issue.yaml
...
This recipe fixes an issue where the following warning is displayed when
migrating an ODBC stage using CCMT:
[WARN] WARNING: The number of placeholders in the UPDATE statement does not match the number of key flow variables so placeholder substitution will not occur.
| Info |
|---|
NOTE: This warning can occur due to a genuine bug in the job in which case this recipe will not fix it. This is a fix for a specific, unusual scenario (described in the yaml file). |
...
/usr/local/dstage/[A-Za-z0-9_]/Routine/([A-Za-z0-9_]*).o replaceString: /usr/local/dstage/cplusplus/routines/$1.so
Executing the following command from a command prompt…
| Code Block |
|---|
$> mettleci asset-transformer transform
-isx C:\Users\u915264\transmuter\getmsg.isx
-user u915264
-transforms changeStaticLibToDynamicLibFilename.yml |
…will result in this output:
| Code Block |
|---|
C:\Users\u915264\transmuter>mettleci asset-transformer transform -isx C:\Users\u915264\transmuter\getmsg.isx -user u915264 -transforms changeStaticLibToDynamicLibFilename.yml
MettleCI Command Line (build 118)
(C) 2018-2020 Data Migrators Pty Ltd
----------------------------------
ISX File: C:\Users\u915264\transmuter\getmsg.isx
----------------------------------
Applying 'SearchAndReplace' transform to asset 'getmsg'
Replaced '/usr/local/dstage/TPODS/Routine/get_msg_code.o' with '/usr/local/dstage/cplusplus/routines/get_msg_code.so'
C:\Users\u915264\transmuter> |
Notes:
The example uses a single ISX but any valid filepath (a directory, a wildcard expression, etc) can be used and all ISX files found that way will be processed
In this example the message shows the target and replacement strings. Other transforms will produce different, transform-specific output.
See also
| Child pages (Children Display) |
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