`orca.graph`

A directed graph drawn as SVG, on the server: the pipelines and datasets that feed each other, and a snapshot's lineage.

Nodes are laid out left to right by their longest path from a node with no edge in, and top to bottom in the order given. Each node is a box with a label, a second line, a kind (dataset, pipeline or snapshot, which the stylesheet shapes) and optionally a link and a class, such as start for the snapshot a lineage page is about. Edges that would close a cycle (a pipeline that reads the dataset it writes) are drawn but don't move a node right.

Structs

`Node`

struct Node

Implements Copyable, Movable

Fields: label: String; sub: String; kind: String; href: String: Empty for no link.; cls: String: An extra class, or empty.

`Edge`

struct Edge

Implements Copyable, Movable

Fields: src: Int; dst: Int

Functions

`graph_svg`

def graph_svg(nodes: List[Node], edges: List[Edge], label: String) -> String

The graph as an <svg> element, sized to fit; label names it for screen readers.