Validate VDB before calling EmbeddedServer.deploy

[jrod2016]

Is there a way to validate a VDB before calling server.deploy on it?

Thanks,

John

[shawkins]

The full validation potentially requires a metadata load, so there isn't a option beyond just the full deploy.  Do you have a scenario where you don't want it to be available?  You can set connection-type NONE - VDB Definition · Teiid Documentation

[jrod2016]

In that case, how can I recover a failed deploy? Here's my current deploy code

int newVdbVersion = maxVdbVersion + 1;
ModelMetaData[] backupModels = getModelsFromVDB(vdb);
try {
  server.deployVDB(String.format("%s.%d", dbName, newVdbVersion), modelUpdates.apply(vdb, modelMetaData)); // modelUpdates.apply returns ModelMetaData[]
} catch (Exception e) {
  // How can I recover here?
  throw e;
}

So, the issue I face is that if I get an error like this:

org.teiid.metadata.ParseException: TEIID30386 org.teiid.api.exception.query.QueryParserException: TEIID31100 Parsing error: Encountered "CREATE VIEW [*]Order[*] (Product_line" at line 1, column 13.
Was expecting: id

Then, subsequent deploys fail with the same error. Anyway to clear out the ModelMetaData which caused an issue with the server?

[shawkins]

> Anyway to clear out the ModelMetaData which caused an issue with the server?

What corrective action are you taking?

[jrod2016]

I plan to remove the view causing the error from the model. Is there any operation which is the opposite of ModelMetaData.addSourceMetadata? Or can I just remove it from sourceMetadataText within ModelMetaData?

So, I have something like this (which works apparently). Is there a better way to do this?

   private void removeViewFromModel(String viewName, ModelMetaData mmd) {
      final int sourceMetadataIndex =
            mmd.getSourceMetadataText()
                  .stream()
                  .map(this::getViewName)
                  .collect(Collectors.toList())
                  .indexOf(viewName);
      mmd.getSourceMetadataText().remove(sourceMetadataIndex);
      mmd.getSourceMetadataType().remove(sourceMetadataIndex);
   }

[shawkins]

> Is there a better way to do this?

If you know you want to remove the whole metadata source, then yes that should be fine.

[jrod2016]

Sounds good. Thanks.