Arn parsing doesn't properly parse the qualifier

[ynwangn]

Describe the bug

When I am doing Arn.fromString("arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:1"), the resulting arn doesn't properly recognize the qualifier part.

it = {Arn@5622} "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:1"
 partition = "aws"
 service = "ecs"
 region = "us-east-1"
 accountId = "012345678910"
 resource = "task-definition/console-sample-app-dynamic-ports:1"
 arnResource = {ArnResource@7232} "task-definition:console-sample-app-dynamic-ports:1:null"
  resourceType = "task-definition"
  resource = "console-sample-app-dynamic-ports:1"
  qualifier = null

The resource field should be console-sample-app-dynamic-ports and qualifier should be 1.

The Arn parsing was working properly in AWS Java SDK v1.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

According to the javadoc, Arn class should properly handle the arn:<partition>:<service>:<region>:<account>:<resourcetype>/resource:qualifier format arn.

Arn.fromString("arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:1") should yield

it = {Arn@5622} "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:1"
 partition = "aws"
 service = "ecs"
 region = "us-east-1"
 accountId = "012345678910"
 resource = "task-definition/console-sample-app-dynamic-ports:1"
 arnResource = {ArnResource@7232} "task-definition:console-sample-app-dynamic-ports:1"
  resourceType = "task-definition"
  resource = "console-sample-app-dynamic-ports"
  qualifier = "1"

Current Behavior

See description above.

Reproduction Steps

Just run Arn.fromString("arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:1").

Possible Solution

Arn parsing should properly recognize the qualifier when the arn format is arn:<partition>:<service>:<region>:<account>:<resourcetype>/resource:qualifier

Additional Information/Context

No response

AWS Java SDK version used

2.30.17

JDK version used

21.0.6

Operating System and version

Amazon Linux 2

[ynwangn]

Possibly can be fixed in #1890.

[bhoradc]

Hello @ynwangn,

Thank you for reporting the issue. Upon investigation, it appears that the behavior of the qualifier showing as null in SDK version 2.20.135 and above is an expected outcome. This change was introduced by the commit v2.20.135, which intentionally reverted the modifications made in v2.20.132 for handling resource variants in the ArnResource class. Therefore, the null value for the qualifier seems like intended change in behavior after reverting the previous enhancement.

• With v2.20.132 thru v2.20.134

args = {String[0]@691} []
arnString = "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:10"
arn = {Arn@812} "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:10"
 accountId = "012345678910"
 resource = "task-definition/console-sample-app-dynamic-ports:10"
 partition = "aws"
 service = "ecs"
 region = "us-east-1"
 arnResource = {ArnResource@836} "task-definition:console-sample-app-dynamic-ports:10"
  resourceType = "task-definition"
  resource = "console-sample-app-dynamic-ports"
  qualifier = "10"

• With v2.20.135 and above

args = {String[0]@691} []
arnString = "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:10"
arn = {Arn@812} "arn:aws:ecs:us-east-1:012345678910:task-definition/console-sample-app-dynamic-ports:10"
 accountId = "012345678910"
 resource = "task-definition/console-sample-app-dynamic-ports:10"
 partition = "aws"
 service = "ecs"
 region = "us-east-1"
 arnResource = {ArnResource@835} "task-definition:console-sample-app-dynamic-ports:10:null"
  resourceType = "task-definition"
  resource = "console-sample-app-dynamic-ports:10"
  qualifier = null

Having said that, I will review this with the team to determine an appropriate course of action.

Regards,
Chaitanya