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gosnowth v1.4.0
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@dhaifley dhaifley released this 16 Sep 13:07
· 142 commits to master since this release
v1.4.0
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Added

  • Adds the FetchQuery type and the SnowthClient.FetchValues and SnowthClient.FetchValuesContext() methods to support fetching data, in the DF4 format, using the IRONdb /fetch API.
  • New functionality has been added to read histogram data using the SnowthClient ReadHistogramValues() and ReadHistogramValuesContext() methods. The new HistogramValue type has been added to represent the histogram data returned by the new methods.
  • New ReadRollupAllValues() and ReadRollupAllValuesContext() methods have been added to SnowthClient. These methods return slices of RollupAllValue values representing IRONdb rollup response data in the legacy / type=all format.
  • Adds new SnowthClient methods for listing Lua extensions and calling any Lua extension via the IRONdb extension APIs: SnowthClient.GetLuaExtensions() and SnowthClient.ExecLuaExtension().
  • Adds specific support for performing CAQL queries using the Lua extension with the SnowthClient.GetCAQLQuery() method.
  • Adds support for a Go data structure representation of the DF4 data format. This is needed to represent CAQL query results and will also allow for future support for IRONdb /fetch API requests.

Changed

  • The RollupValues type has been replaced by the RollupValue and RollupAllValue types. These types are better able to represent all possible rollup data formats that can be returned by IRONdb. This is an API breaking change that modifies the signature of the SnowthClient ReadRollupValues() and ReadRollupValuesContext() methods.
  • The SnowthClient ReadTextValues() and ReadTextValuesContext() have updated signatures to match the parameters of the other data retrieval methods. This is an API breaking change for these methods.
  • These new types allow true support for IRONdb formatted timestamps for rollup data retrieval methods by changing previous Timestamp integer field to a field named Time containing a Go time.Time value. This is translated to/from the IRONdb timestamp format during JSON encoding/decoding and the IRONdb timestamp can be retrieved (as as string) by calling the Timestamp() method on values of the new types.
  • The new methods also support retrieving all types of rollup data. They are no longer restricted to only the average type data.
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