1. A method comprising: processing, by one or more computer processors, a first set of log data generated during execution of application code in a first scenario to identify the one or more log entries appearing in the first set of log data, wherein: the first set of log data includes one or more log entries and a set of run-time data, and the one or more log entries are information pertaining to the application code in the first scenario; creating, by one or more computer processors, a first rule based on a first pattern of the identified one or more log entries appearing in the first set of log data, wherein the first pattern includes a content of a plurality of message identifiers that appear in the first set of log data and a chronological order in which the plurality of message identifiers appear; and associating, by one or more computer processors, the first rule with information describing the first scenario.