Internal data query
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Checkpoint also exposes some queries to inspect the internal state of how the indexer is running. Typically, internal queries are usually prefixed with an underscore (_
) and are structured in a similar way to how are generated.
Currently, Checkpoint exposes the following internal data queries:
These are used to query single or multiple metadata records. Metadata records are key-value pairs of data used by Checkpoint internally to describe the state of its process. These queries are defined as:
For starters, you can execute the following query to see a list of all metadata values exposed by Checkpoint:
Internally, Checkpoint keeps track of blocks where contracts event are found. These records are usually used by Checkpoint to speed up re-indexing when restarted. The _checkpoint(s)
queries provide a way to query these blocks. The results can be exported and used to seed another Checkpoint instance running on another machine.
These queries are defined as:
For example, you can run the following query to fetch all blocks where the event of a particular contract can be found: