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feat(core): Pre-concatenate Fn::Join (aws#967)
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This restores the pre-concatenation of `Fn::Join` fragments that was
introduced in aws#916 and reverted in aws#958 due to an other feature part of
the same commit.

The goal is to pre-concatenate the string literals present in the
concatenated values, and flatten `Fn::Join` nested under another
`Fn::Join` using the same delimiter, so as to produce more readable
CloudFormation templates. Additionally, if the `Fn::Join`
pre-concatenation results in a single string being left, then the
`Fn::Join` intrinsic is erased and replaced with a string literal.
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@RomainMuller
RomainMuller authored Oct 22, 2018
1 parent 1626c37 commit 33c32a8
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Showing 61 changed files with 930 additions and 1,964 deletions.
68 changes: 20 additions & 48 deletions packages/@aws-cdk/assets/test/integ.assets.directory.lit.expected.json
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Original file line number Diff line number Diff line change
Expand Up @@ -30,18 +30,11 @@
"Fn::Join": [
"",
[
"arn",
":",
"arn:",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
":s3:::",
{
"Ref": "SampleAssetS3BucketE6B2908E"
}
Expand All @@ -52,50 +45,29 @@
"Fn::Join": [
"",
[
"arn:",
{
"Fn::Join": [
"",
[
"arn",
":",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
{
"Ref": "SampleAssetS3BucketE6B2908E"
}
]
]
"Ref": "AWS::Partition"
},
":s3:::",
{
"Ref": "SampleAssetS3BucketE6B2908E"
},
"/",
{
"Fn::Join": [
"",
[
{
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "SampleAssetS3VersionKey3E106D34"
}
]
}
]
},
"*"
]
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "SampleAssetS3VersionKey3E106D34"
}
]
}
]
}
},
"*"
]
]
}
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68 changes: 20 additions & 48 deletions packages/@aws-cdk/assets/test/integ.assets.file.lit.expected.json
View file
Original file line number Diff line number Diff line change
Expand Up @@ -30,18 +30,11 @@
"Fn::Join": [
"",
[
"arn",
":",
"arn:",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
":s3:::",
{
"Ref": "SampleAssetS3BucketE6B2908E"
}
Expand All @@ -52,50 +45,29 @@
"Fn::Join": [
"",
[
"arn:",
{
"Fn::Join": [
"",
[
"arn",
":",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
{
"Ref": "SampleAssetS3BucketE6B2908E"
}
]
]
"Ref": "AWS::Partition"
},
":s3:::",
{
"Ref": "SampleAssetS3BucketE6B2908E"
},
"/",
{
"Fn::Join": [
"",
[
{
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "SampleAssetS3VersionKey3E106D34"
}
]
}
]
},
"*"
]
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "SampleAssetS3VersionKey3E106D34"
}
]
}
]
}
},
"*"
]
]
}
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68 changes: 20 additions & 48 deletions packages/@aws-cdk/assets/test/integ.assets.permissions.lit.expected.json
View file
Original file line number Diff line number Diff line change
Expand Up @@ -30,18 +30,11 @@
"Fn::Join": [
"",
[
"arn",
":",
"arn:",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
":s3:::",
{
"Ref": "MyFileS3BucketACE13C36"
}
Expand All @@ -52,50 +45,29 @@
"Fn::Join": [
"",
[
"arn:",
{
"Fn::Join": [
"",
[
"arn",
":",
{
"Ref": "AWS::Partition"
},
":",
"s3",
":",
"",
":",
"",
":",
{
"Ref": "MyFileS3BucketACE13C36"
}
]
]
"Ref": "AWS::Partition"
},
":s3:::",
{
"Ref": "MyFileS3BucketACE13C36"
},
"/",
{
"Fn::Join": [
"",
[
{
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "MyFileS3VersionKey568C3C9F"
}
]
}
]
},
"*"
]
"Fn::Select": [
0,
{
"Fn::Split": [
"||",
{
"Ref": "MyFileS3VersionKey568C3C9F"
}
]
}
]
}
},
"*"
]
]
}
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