decompile does not recognize dependencies from a loop
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- Bicep
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Description
**Bicep version**
Bicep CLI version 0.4.1272 (a69022dd2c)
**Describe the bug**
When decompiling resource loops, the dependencies are created with resourceId rather than the required resource reference. Might be the same as #5622
**To Reproduce**
Decompile the following:
```json
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"variables": {
"numberOfAccounts": 2,
"blobsPerAccount": 3,
"saprefix": "[uniqueString(resourceGroup().id)]"
},
"resources": [
{
"type": "Microsoft.Storage/storageAccounts",
"apiVersion": "2021-08-01",
"name": "[format('{0}{1}', variables('saprefix'), copyIndex())]",
"location": "[resourceGroup().location]",
"sku": {
"name": "Standard_LRS"
},
"kind": "StorageV2",
"copy": {
"name": "sa",
"count": "[variables('numberOfAccounts')]"
}
},
{
"type": "Microsoft.Storage/storageAccounts/blobServices",
"apiVersion": "2021-08-01",
"name": "[format('{0}{1}/default', variables('saprefix'), copyIndex())]",
"copy": {
"name": "blobServices",
"count": "[variables('numberOfAccounts')]"
},
"dependsOn": [
"[resourceId('Microsoft.Storage/storageAccounts', format('{0}{1}', variables('saprefix'), copyIndex()))]"
]
},
{
"type": "Microsoft.Storage/storageAccounts/blobServices/containers",
"apiVersion": "2021-08-01",
"name": "[format('{0}{1}/{2}/{3}{4}', variables('saprefix'), mod(copyIndex(), variables('numberOfAccounts')), 'default', 'container', mod(copyIndex(), variables('blobsPerAccount')))]",
"copy": {
"name": "blobs",
"count": "[mul(variables('numberOfAccounts'), variables('blobsPerAccount'))]"
},
"dependsOn": [
"[resourceId('Microsoft.Storage/storageAccounts', format('{0}{1}', variables('saprefix'), mod(copyIndex(), variables('numberOfAccounts'))))]",
"[resourceId('Microsoft.Storage/storageAccounts/blobServices', format('{0}{1}', variables('saprefix'), mod(copyIndex(), variables('numberOfAccounts'))), 'default')]"
]
}
]
}
```
Decompiled code:
```bicep
var numberOfAccounts = 2
var blobsPerAccount = 3
var saprefix_var = uniqueString(resourceGroup().id)
resource saprefix 'Microsoft.Storage/storageAccounts@2021-08-01' = [for i in range(0, numberOfAccounts): {
name: '${saprefix_var}${i}'
location: resourceGroup().location
sku: {
name: 'Standard_LRS'
}
kind: 'StorageV2'
}]
resource saprefix_default 'Microsoft.Storage/storageAccounts/blobServices@2021-08-01' = [for i in range(0, numberOfAccounts): {
name: '${saprefix_var}${i}/default'
dependsOn: [
resourceId('Microsoft.Storage/storageAccounts', '${saprefix_var}${i}')
]
}]
resource saprefix_numberOfAccounts_default_container_blobsPerAccount 'Microsoft.Storage/storageAccounts/blobServices/containers@2021-08-01' = [for i in range(0, (numberOfAccounts * blobsPerAccount)): {
name: '${saprefix_var}${(i % numberOfAccounts)}/default/container${(i % blobsPerAccount)}'
dependsOn: [
resourceId('Microsoft.Storage/storageAccounts', '${saprefix_var}${(i % numberOfAccounts)}')
resourceId('Microsoft.Storage/storageAccounts/blobServices', '${saprefix_var}${(i % numberOfAccounts)}', 'default')
]
}]
```
Contributor guide
Research direction
Start by running the decompiler against the ARM JSON reproduction in the issue and compare the generated loop dependencies with the input dependsOn expressions. Done means dependencies for looped resources are emitted as resource references rather than resourceId calls, including both storage account and blob service dependencies.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- azure
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100