htools: read the disk template in Luxi and Rapi
Both these backends already have the data, we just need to use it.
Signed-off-by: Iustin Pop <iustin@google.com>Reviewed-by: Guido Trotter <ultrotter@google.com>
htools: add DiskTemplate to instance definition
Currently always fixed to DRBD8, as that is what we assume already.
htools: add some unittests for Types.hs
htools: add a DiskTemplate type
This will be used later in the Instance type.
htools: small simplification to parseUtilisation
We eliminate the local variable as it's used only once.
htools: rename Instance.auto_balance
… to autoBalance, per the recommended style.
htools: simplify some JSON-related code
Instead of manually encoding the JSValue(s), we can use showJSON aslong as we use data types that can be auto-converted.
htools: allow different result types
This patch extends the previous patch changes to allow that eachCluster function returns a different result type, as long as we havean auxiliary function that processes that into the standardIAllocResult type.
Signed-off-by: Iustin Pop <iustin@google.com>...
htools: start reorganising the IAllocator workflow
Currently, all IAllocator requests return the same result type: a listof strings (usually nodes, but can also be instance:nodes). This won'tbe true in the future, with the new request types that will return...
htools: split more code from hail/main
The logic of request processing is not separated into its ownfunction, and (beside CLI interaction, e.g. verbosity handling) alllogic is now in IAllocator.hs.
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