SLA management in composite cloud solutions using blockchain

A computer system for service level agreement (SLA) management within a composite service using a blockchain network, comprising:

• one or more processors, one or more computer-readable memories, one or more computer-readable tangible storage media, and program instructions stored on at least one of the one or more computer-readable tangible storage media for execution by at least one of the one or more processors via at least one of the one or more computer-readable memories, wherein the computer system is capable of performing a method comprising:
• collecting a plurality of service metrics from a plurality of services within the composite service;
• determining, by a first SLA smart contract, a first SLA violation occurred based on the collected plurality of service metrics violating a first SLA between a first pair of services within the plurality of services, wherein the first SLA smart contract and the first pair of services are associated with a first private channel within the blockchain network;
• determining, by a second SLA smart contract, a second SLA violation occurred based on the collected plurality of service metrics violating a second SLA between a second pair of services within the plurality of services, wherein the second SLA smart contract and the second pair of services are associated with a second private channel within the blockchain network;
• in response to determining the first SLA violation occurred and the second SLA violation occurred, determining that the first SLA violation and second SLA violation are related and the second SLA violation occurred before the first SLA violation;
• and
• in response to determining the first SLA violation and second SLA violation are related and the second SLA violation occurred before the first SLA violation, identifying a violating service within the second pair of services that is responsible for causing the first SLA violation.

A computer program product for service level agreement (SLA) management within a composite service using a blockchain network, comprising a computer-readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform a method comprising:

• collecting a plurality of service metrics from a plurality of services within the composite service;
• determining, by a first SLA smart contract, a first SLA violation occurred based on the collected plurality of service metrics violating a first SLA between a first pair of services within the plurality of services, wherein the first SLA smart contract and the first pair of services are associated with a first private channel within the blockchain network;
• determining, by a second SLA smart contract, a second SLA violation occurred based on the collected plurality of service metrics violating a second SLA between a second pair of services within the plurality of services, wherein the second SLA smart contract and the second pair of services are associated with a second private channel within the blockchain network;
• in response to determining the first SLA violation occurred and the second SLA violation occurred, determining that the first SLA violation and second SLA violation are related and the second SLA violation occurred before the first SLA violation;
• and
• in response to determining the first SLA violation and second SLA violation are related and the second SLA violation occurred before the first SLA violation, identifying a violating service within the second pair of services that is responsible for causing the first SLA violation.