[Hawkular-dev] Inventory - /entity/{path}/treeHash - Cannot cast BaseEnvironments$Single to Synced$Single

[Gareth Healy]

Thanks for the explanation: https://issues.jboss.org/browse/HWKINVENT-204

Cheers.

On Thu, Sep 15, 2016 at 2:59 PM, Lukas Krejci <lkrejci at redhat.com> wrote:

> It's a poorly handled error condition.
>
> Not all entity types support tree hashes. Only those tha can be synced also
> have a tree hash (because tree hash is used to minimize the number of
> updates
> we need to do).
>
> You can only sync a feed and anything underneath it - resources, metrics,
> resource types, metric types, operation types and data.
>
> Environments are not syncable (at least now) and so you cannot obtain a
> treeHash of them.
>
> That said, you should get a more comprehensible error message than the
> above.
> Would you mind creating an issue for that at
> https://issues.jboss.org/secure/CreateIssue!default.jspa?
> selectedProjectId=12315923
>
> Hope this helps,
>
> Lukas
>
> On Wednesday, September 14, 2016 4:22:11 PM CEST Gareth Healy wrote:
> > I am using the inventory "entity" API - Day1 of using it, so might be a
> > silly mistake.
> >
> > Using services v0.0.12.Final which has v0.18.0Final of inventory.
> >
> > I am able to create and get an entity, but when i try to get the
> treeHash,
> > i get a cast exception.
> >
> > Server log:
> >
> >    - https://gist.github.com/garethahealy/e5004563be11cbc55ea6fcf1bb2907
> d6
> >
> > Client log:
> >
> >    - https://gist.github.com/garethahealy/e397df61965df7b766b41a30a3f33c
> a2
> >
> > This a bug? or am i doing something wrong?
> >
> > Cheers.
>
>
> --
> Lukas Krejci
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