Re: Zope 4 migration

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Am 12.12.2019 um 10:22 schrieb Michael Brunnbauer <[email protected]>:
[=E2=80=A6]
> Thank you very much for your help. I have some reservations about =
installing
> Products.TemporaryFolder.

You seem only to need ZODBMountPoint. But maybe you do not use server =
side sessions so you can live without TemporaryFolder which needs =
ZODBMountPoint to mount the temporary folder.
There is =
https://github.com/zopefoundation/Products.TemporaryFolder/issues/12 to =
extract ZODBMountPoint into its own package. Feel free to comment there =
if you actually need ZODBMountPoint without TemporaryFolder.

> See here:
>=20
> https://pypi.org/project/Products.Sessions/
>=20
> "The default session support under Zope 2 relied on =
Products.TemporaryFolder
>  for storing session data, which in turn used the tempstorage package.
>  tempstorage is no longer recommended because it has unfixed and =
possibly
>  unfixable issues under Zope 4 that lead to corrupted temporary =
storages.=E2=80=9C

This is only the case when using tempstorage, a RAM based storage =
implementation.
You could also configure an additional ZODB for the server side session =
data and mount it instead of using Products.TemporaryFolder.
This makes server side sessions persistent between restarts.

> Also, for me this means installing 8 Products after installing Zope =
with pip:
> Sessions, ExternalMethod, PythonScripts, ZSQLMethods, ZMySQLDA, =
MailHost,
> TemporaryFolder, SiteErrorLog.

That=E2=80=99s right, some Products were part of Zope2 or install =
dependencies.
Zope 4 is a but more lightweight. So you have to install the Products =
you need.

> Would the standard zc.buildout install already contain some of those?

No, you have to add them to buildout.cfg.

> I somehow got attached to the pip way over the years but maybe I =
should
> really switch.

If you know how to use pip: It=E2=80=99s okay to use it.
I personally find Buildout more convenient.

--
Mit freundlichen Gr=C3=BC=C3=9Fen
Michael Howitz


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