This change makes the `update_appup.escript` check whether the new
version of an application (the _current_ one) is already contained in
entries in the _new_ .appup file for that application if such .appup
file contains regexes.
NOTE: this does not cover the case in which we calculate the
difference between _old_ and _new_ appup entries, and those consist of
regexes. In such case, we would need to check if one regex is
"contained" in the other, which is not currently supported by this
patch.
Sessions must not enqueue messages when another process is taking over
the client id, since it already passed on the message queue in the
session state.
Without this fix, messages arriving after `{takeover, 'begin'} to a
channel with no connection (i.e., a persistent session) would be lost.
chore(ekka): bump ekka to 0.8.1.6
We're doing this to remove some missing change warnings when updating
emqx v4.3.10. Ekka's appup was updated in emqx/ekka#140 .
<details>
<summary> `update_appup.escript` output after update (running against 4.3.10) </summary>
```
Found the previous appup file: _build/emqx/rel/emqx/lib/ekka-0.8.1.6/ebin/ekka.appup
INFO: Application 'ekka' has been updated: "0.8.1.4" -> "0.8.1.6"
... elided ...
ERROR: Appup file for the external dependency 'ehttpc' is not complete.
Missing changes: #{down =>
[{"0.1.10",
[{load_module,ehttpc_pool,brutal_purge,soft_purge,[]},
{load_module,ehttpc,brutal_purge,soft_purge,[]}]},
{<<"0\\.1\\.0">>,
[{load_module,ehttpc_pool,brutal_purge,soft_purge,[]},
{load_module,ehttpc,brutal_purge,soft_purge,[]}]},
{<<"0\\.1\\.[1-7]">>,
[{load_module,ehttpc_pool,brutal_purge,soft_purge,[]},
{load_module,ehttpc,brutal_purge,soft_purge,[]}]}],
up =>
[{"0.1.10",
[{load_module,ehttpc_pool,brutal_purge,soft_purge,[]},
{load_module,ehttpc,brutal_purge,soft_purge,[]}]},
{<<"0\\.1\\.[0-7]">>,
[{load_module,ehttpc_pool,brutal_purge,soft_purge,[]},
{load_module,ehttpc,brutal_purge,soft_purge,[]}]}]}
NOTE: Some changes above might be already covered by regexes.
ERROR: Incomplete appups found. Please inspect the output for more details.
```
</details>
Thales Macedo Garitezi