How to find the parent package

Question

Hi,
The problem I'm trying to solve is, given an instance of a SSIS package being executed, I need to find the GUID and execution id of the package that calls it. According to the API (https://msdn.microsoft.com/en-us/library/microsoft.sqlserver.dts.runtime.package.aspx)
the Package class
has a property "Parent", which returns the instance of the container that contains the child package. In reality though, this doesn't seem to work. Here's what I did,
1. Create a child package that simply has a script task which writes a line to a file for debugging purpose.
2. Create a custom SSIS component in which the child package is called by the myPackage.Execute() method;
3. Given the reference myPackage, try to print the parent container id through the FireInfo() method from IDTSComponents interface.
What I got was an "reference not set to an object" error, which means the parent property is null. This leads me to wonder, when is the parent property set? Is it only set during the execution of the child package? I tried to access it both before
and after executing the child package, and in both cases the value was null.
My ultimate goal is to write the parent package id (and execution id) into the ssis log so as to easily trace the execution of packages. Another option to achieving this goal would be through passing values via parent package variables but that seems to
be too clumsy. 
Any help / suggestion is greatly appreciated.
Regards,
Amos

Answer 1

I have done the same thing via different way. Let me tell you how
Step 1: Create a log table
CREATE TABLE [dbo].[ExecutionLog](
[LogID] [int] IDENTITY(1,1) NOT NULL,
[ParentLogID] [int] NULL,
[Description] [varchar](50) NULL,
[PackageName] [varchar](50) NOT NULL,
[PackageGuid] [uniqueidentifier] NOT NULL,
[MachineName] [varchar](50) NOT NULL,
[ExecutionGuid] [uniqueidentifier] NOT NULL,
[Operator] [varchar](50) NOT NULL,
[StartTime] [datetime] NOT NULL,
[EndTime] [datetime] NULL,
[Status] [tinyint] NOT NULL,
[FailureTask] [varchar](64) NULL,
CONSTRAINT [PK_ExecutionLog] PRIMARY KEY CLUSTERED
[LogID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[ExecutionLog] WITH CHECK ADD CONSTRAINT [FK_ExecutionLog_ExecutionLog] FOREIGN KEY([ParentLogID])
REFERENCES [dbo].[ExecutionLog] ([LogID])
GO
ALTER TABLE [dbo].[ExecutionLog] CHECK CONSTRAINT [FK_ExecutionLog_ExecutionLog]
GO
Step 2: On every package Create three Execute SQL Task
 Execute SQL Task 1 :  On begin of package 
 Execute SQL Task 2  : After completion of all task
Step 3: Now create two SP
For EQT #1
--Root-level nodes should have a null parent
if @ParentLogID <= 0 set @ParentLogID = null
--Insert the log record
insert into dbo.ExecutionLog(
ParentLogID
,Description
,PackageName
,PackageGuid
,MachineName
,ExecutionGuid
,Operator
,StartTime
,EndTime
,Status
,FailureTask
) values (
@ParentLogID
,@Description
,@PackageName
,@PackageGuid
,@MachineName
,@ExecutionGuid
,@operator
,getdate()
,null
,0 --InProcess
,null
set @logID = scope_identity()
EQT #2 On End
update dbo.ExecutionLog set
EndTime = getdate() -
,Status = case
when Status = 0 then 1 --Complete
else Status
end --case
where
LogID = @logID
You can create similar SP for OnError if you want 
Step 4: Now create two variables LogId & parentLogId Int default value 0
Step 5: Step up parent package variable configuration for logId like below
Step 6: Call these SP in respective execute SQL task
Hope this will help
Glad to help! Please remember to accept the answer if you found it helpful. It will be useful for future readers having same issue.
My Profile on Microsoft ASP.NET forum