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# typescript
s
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l
Based on experience, I'm going to make a guess: your task definition is using a JSON.stringify and image.imageUri is in there without a 
pulumi.interpolate
. So your URI is actually a big long error message.
Apologies if I'm way off the mark! It has happened to me, and to many people whose code I have reviewed. So I'm guessing 🙂
q
mmm i am not doing a json stringify, im using crosswalk, straight from the example
l
I'll look in the AWSX code to see what it does. Are you using awsx classic/0.40.1? Or awsx new?
f
I'm not sure that pulumi knows what 
image.imageUri
is at that point, since technically it's part of `image`s Output
q
it is
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"@pulumi/awsx": "^1.0.0",
l
It should know. It does in all other cases: that's what outputs are for. However, awsx does not always follow Pulumi's best practices.
f
Would the 
apply
function be needed here? https://www.pulumi.com/docs/concepts/inputs-outputs/#apply
l
apply is pulumi.interpolate. It would be needed only if the big JSON object is turning into a string. If it is handled as a complete object and all Input<>s in it are handled correctly, then it should work correctly.
Give me 5 minutes to find and review the code.
q
thank you so much!
f
the 
image:
property expects a string, so it would need to use 
interpolate
l
The documentation uses "string" to mean "Input<string>", so it would be handled correctly if that was all that was involved. (I've complained about that on many occasions, they won't change it back 😞 )
However, that's not all that's involved. There are multiple levels of CustomResource and ComponentResource through the awsx and aws code. It looks like the image property is not used directly: it is put into a ContainerDefinition in the awsx code. Still reading....
However, I don't understand why it's explicitly applying cpu, memory and memoryReservation. What about all the other properties, including image?
Line 152 should do everything that's needed:
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const containerString = containerDefinitions.apply((d) => JSON.stringify(d));
But.. I'm not convinced. I think you should test this.
And the easiest way is to use apply/interpolate yourself, in your code. If it fixes it, then Alex's/my guesses are correct, and you need to interpolate. So instead of using 
image: image.imageUri
, try
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image: pulumi.interpolate`image.imageUri`
q
does it not need the 
${}
?
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image: pulumi.interpolate`${image.imageUri}`,
f
I had no idea that some of these resource modules were written that way (with 
apply
builtin). You've given me tons of insight @little-cartoon-10569!
q
thank you both for the insights
the example on the pulumi documentation is confusing as it has 
image: image.imageUri
directly without interpolate, gonna give interpolate a shot
l
It might do @quiet-crayon-85132. Sorry, been called to a meeting, can't check right now 🙂
q
all good, thanks again!
update to close the loop on this, i updated awsx to 
1.0.4
from 
1.0.1
and it worked, so i guess something was fixed in a recent minor version
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