graph
meta
Read graph metadata and counts.
strata graph metadb.graphs.meta(name: 'str', *, as_of: 'Optional[int]' = None, as_of_time: 'Optional[TimeLike]' = None) -> 'Any'wire graph_get_meta
Reads a graph's metadata: live node and edge counts plus the create and last-update commit versions and timestamps. Reading a graph that does not exist returns no data rather than an error. Accepts `as_of` for time travel.
Optional reads distinguish present data from missing data. When version or timestamp facts exist on the executor output, SDK mappings should preserve them.
To see the complete help for this command, run:
strata graph meta --helphelp(db.graphs.meta)
Example
Read a graph's node and edge counts.
strata graph create socialstrata graph add-node social alicestrata graph add-node social bobstrata graph meta social
_ = db.graphs.create("social")_ = db.graphs.add_node("social", "alice")_ = db.graphs.add_node("social", "bob")db.graphs.meta("social").node_count
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| graph | string | yes | Graph name. |
| as_of | integer or null | no | Read as of a position on the logical commit timeline - the `timestamp` from `history` output, not the `version`, and never a calendar date. Reads the graph state visible at that timeline position. To read as of a real time, use `as_of_time` instead. |
| as_of_time | integer or null | no | Read as of a real time: a wall-clock instant in microseconds since the Unix epoch (UTC), as reported by `committed_at` on a write ack or on any `history` row. Resolves to the commit at or before that instant, and fails rather than guessing if the instant falls outside the branch's recorded history. Mutually exclusive with `as_of`. |
| branch | string or null | no | Target branch. Defaults to the executor handle branch. |
| space | string or null | no | Target product space. Defaults to `"default"`. |
Returns
Maybe<GraphInfoData>
- dataany
- typestring
Errors
Recover by code. Retry policy and commit outcome come from the shipped error registry.
| Code | Retry | Commit outcome |
|---|---|---|
| failed_precondition.engine.runtime_closed | never | not_started |
| not_found.engine.branch | never | not_applicable |
| invalid_argument.engine.product_space | never | not_started |
| invalid_argument.engine.graph_name | never | not_started |
| not_found.engine.graph | never | not_applicable |