Cancellation of a migration-based upgrade using a network swap workflow

A computer system comprising:

• a processor;
• and
• a non-transitory computer readable medium having stored thereon program code executable by the processor, the program code causing the processor to:
• based on at least a first network swap instruction:
• transmit, by a source machine, to a target machine, a second network swap instruction, wherein the source machine has a first machine identity and the target machine has a second machine identity;
• execute, by the source machine, a first function that swaps its identity from the first machine identity to the second machine identity by storing on the source machine an indicator of the second machine identity;
• and
• wherein the target machine is configured to execute a second function that swaps its identity from the second machine identity to the first machine identity by storing on the target machine an indication of the first machine identity;
• obtain, by the source machine, an upgrade cancellation instruction;
• and
• based at least on obtaining the upgrade cancellation instruction:
• execute, by the source machine, the first function to revert its identity to the first machine identity by storing on the source machine the indicator of the first machine identity;
• and
• wherein the target machine is configured to execute the second function to execute the second function to revert its identity to the second machine identity by storing on the target machine the indicator of the second machine identity.

A non-transitory computer storage medium having stored thereon program code executable by a processor, the program code embodying a method comprising:

• based on a first network swap instruction:
• obtaining, by a target machine from a source machine, a second network swap instruction, wherein the source machine has a first machine identity and the target machine has a second machine identity;
• executing, by the target machine, a second function that swaps its identity from the second machine identity to the first machine identity by storing on the target machine an indicator of the first machine identity;
• wherein the source machine is configured to execute a first function that swaps its identity from the first machine identity to the second machine identity by storing on the source machine an indicator of the second machine identity;
• and
• obtaining, by the target machine, an upgrade cancellation instruction;
• and
• based at least on obtaining the upgrade cancellation instruction:
• executing, by the target machine, the second function to revert its identity to the second machine identity by storing on the target machine the indication of the second machine identity;
• and
• wherein the source machine is configured to execute the first function to revert its identity to the first machine identity by storing on the source machine an indication of the first identity.