Scavenge log changes

[lscpike]

This adds support for the new features added in following PRs:

• Stop scavenge EventStore#1632
• Faster scavenge EventStore#1637
• Scavenge index EventStore#1638

[riccardone]

@lscpike I'm reviewing this PR.
I can see the Cancel button and it's working stopping the running Scavenge.
I wonder what could be done to re-start a stopped Scavenge operation.
I guess that you can retrieve the completed chunk number and then it should be possible to add a button when the scavenge has been stopped with the http request.
Do you agree? I will create an issue to implement that later

[lscpike]

Yeah that works. I implemented a PowerShell script that scans the scavenge log for the last scavenged chunk number. You can probably implement the same in the UI very easily.

…

On Tue, 13 Nov 2018, 16:20 Riccardo Di Nuzzo ***@***.*** wrote: @lscpike <https://github.com/lscpike> I'm reviewing this PR. I can see the Cancel button and it's working stopping the running Scavenge. I wonder what could be done to re-start a stopped Scavenge operation. I guess that you can retrieve the completed chunk number and then it should be possible to add a button when the scavenge has been stopped with the http request. Do you agree? I will create an issue to implement that later — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#195 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGr269YY23RD2LW2XVdNwZdgSw4CEIaKks5uuvE2gaJpZM4UMqBT> .

[riccardone]

@lscpike I've just merged and solved the conflicts. This PR works as expected, thank you!
This PR can be merged after we have merged the EventStore->Scavenge_Index
EventStore/EventStore#1638

[riccardone]

This PR works as expected, thank you!
This PR can be merged after we have merged the EventStore->Scavenge_Index
EventStore/EventStore#1638

[ChrisChinchilla]

Let me now when this is done as I also need to add to docs :)

[riccardone]

@ChrisChinchilla this PR is completed and it does not need anything else other than merge. I have just open a new Issue about a Start button that will be eventually implemented in a new PR