* add flag to handler
* cleanup
* concurrency control
* add flag for handler setters
* update service flags
* fix event handlers
* more handlers
* make sure behavior is unchanged if flag is off
* cleanup
* add test case for parallel processing
* comments
* stop dispatcher in test
* add log for request lifespan
* cleanup and add comments
* correctly release semaphore
* remove deleted file from merge
* use await for semaphore release
* move handler invocation to await and adjust test
* cleanup exception handling and wrapper
* space
* loose assertion condition to make test stable
* Some new SQL Assessment warnings may have Check property set to null. Handle the warnings with no exception.
* Make names of SQL Assessment test methods more informative.
* Revert "Revert "Initial migration service changes for assessment support (#1093)" (#1098)"
This reverts commit e96c0064ad.
* Move SQL Tools Service last in Main project list
* INSERT VALUES has the limit of 1000 rows. Replace with derived table.
* Remove NOT NULL restriction from the generated table.
* Fix line endings in SQL Assessment source files.
* Remove the second appearance of server name in TargetName property
* Replace slash with colon as database name separator in TargetName to avoid ambiguity
Fixes#968
[SQL Assessment API](https://docs.microsoft.com/en-us/sql/sql-assessment-api/sql-assessment-api-overview) provides a mechanism to evaluate the configuration
of SQL Server for best practices. SQL Assessment API gives a list
of recommended actions to improve SQL Server performance or security.
The SQL Assessment service is used by the expected SQL Assessment
feature of Azure Data Studio.
SqlAssessmentService forwards JSONRPC calls to SQL Assessment engine
and wraps results as a response.
`assessment/getAssessmentItems` returns a set of checks
applicable to a given target.
`assessment/invoke` returns a set of recommendations
for improving SQL Server instance or database configurations.
`assessment/generateScript` returns a T-SQL script for storing
an assessment result set to a SQL data table.
