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Part of #267: Implement in Agora version upgrader #2364

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@Geod24 Geod24 commented Aug 9, 2021

In order to fix the issue, we need two components:
- The ability to update the node's persistent storage to accomodate for format / schema changes;
- The ability to automatically download and install a new update whenever available;

This implements the former functionality. The later will be handled outside of Agora.

This still need:

Submitting in case anyone want to give feedback on the design.

In order to fix the issue, we need two components:
- The ability to update the node's persistent storage to accomodate for format / schema changes;
- The ability to automatically download and install a new update whenever available;

This implements the former functionality. The later will be handled outside of Agora.
/// Set the current version in the metadata
private void setMetadataVersion (ManagedDatabase stateDB, string version_)
{
stateDB.execute("INSERT OR REPLACE INTO metadata (key, value) VALUES ('version', ?)", version_);
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Sqlite have this

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