Embedding monitoring into your software
As mentioned in Chapter 7, Vital Measurements, there are a few ways you can include and embed the generation of metrics within the software itself.
Let's assume that your software components contain APIs that are used for component-to-component communication. If you were able to extend these APIs to include some sort of a health-check functionality, you could construct a tool that simply calls each component and asks the component how it is. The component can then return various bits of data, which indicates its health. This might seem a bit convoluted, but it's not that difficult.
The following diagram gives an overview of how this might look:
A health-checker solution harvesting health-status data form software ...
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