Automatically import resource on errors like `Resource already exists`

[eistrati]

Feature Report

Describe the Feature

Automatically import resource on errors like Resource already exists

Expected Behavior

Execute terrahub run --auto-import and when an error is thrown by terraform related to an existing resource (something link resource already exists), re-run terraform import and again terraform plan (or terraform apply)

[eistrati]

Additionally, let's make an effort to decouple and consolidate terraform errors that are caught and processed by terrahub:

• https://github.com/tfxor/terrahub/blob/master/src/helpers/wrappers/abstract-terrahub.js#L190-L192 -- /timeout/, /EOF/, /failed to decode/, /unable to verify checksum/, /ECONNREFUSED/, /connection reset/, /connection refused/, /connection issue/, /ECONNRESET/
• https://github.com/tfxor/terrahub/blob/master/src/helpers/distributors/distributor.js#L220 -- /This feature is not available yet/, /[AWS distributor]/
• https://github.com/tfxor/terrahub/blob/master/src/helpers/distributors/distributor.js#L317-L323 -- This feature is not available yet
• https://github.com/tfxor/terrahub/blob/master/src/helpers/distributors/distributor.js#L457 -- Error: Unable to find remote state
• https://github.com/tfxor/terrahub/blob/master/src/helpers/distributors/worker.js#L69 -- Error: Unable to find remote state

reference: #1060 (comment)

[eistrati]

Another error to catch and retry using exponential backoff method:

💡 [iam_policy] terraform plan -no-color -var-file='/Users/eugene/Projects/controltower-customizations/terraform/iam_policy/default.tfvars' -out=/Users/eugene/Projects/controltower-customizations/terraform/iam_policy/terraform.tfplan -input=false

❌ [iam_policy] Error: rpc error: code = Unavailable desc = transport is closing

❌ [Local distributor]: Error: rpc error: code = Unavailable desc = transport is closing

[eistrati]

Another error to catch and retry using exponential backoff method:

💡 [cloudtrail] terraform plan -no-color -var-file='/Users/eugene/Projects/controltower-customizations/terraform/cloudtrail/default.tfvars' -out=/Users/eugene/Projects/controltower-customizations/terraform/cloudtrail/terraform.tfplan -input=false

❌ [cloudtrail] Error: Unrecognized remote plugin message: 

This usually means that the plugin is either invalid or simply
needs to be recompiled to support the latest protocol.

[eistrati]

Another error to catch and retry using exponential backoff method:

💡 [datapipeline] terraform plan -no-color -var-file='/Users/eugene/Projects/controltower-customizations/terraform/datapipeline/default.tfvars' -out=/Users/eugene/Projects/controltower-customizations/terraform/datapipeline/terraform.tfplan -input=false

❌ [devops_pipeline] 
Error: Could not load plugin

Plugin reinitialization required. Please run "terraform init".

[eistrati]

Another error to catch and retry using exponential backoff method:

💡 [iam_user] terraform plan -no-color -var-file='/Users/eugene/Projects/controltower-customizations/terraform/iam_user/default.tfvars' -out=/Users/eugene/Projects/controltower-customizations/terraform/iam_user/terraform.tfplan -input=false

❌ [iam_policy] Error: rpc error: code = Canceled desc = context canceled

❌ [Local distributor]: Error: rpc code = Canceled desc = context canceled