How tu use dependency graph to list everything related to item

[mikaël]

I'm playing around with the new itemgraph module trying to create a dependency graph for one service.

I was thinking that this function would list everything that uses this service, for example maps, dashboards, hosted views and joined layers/tables. But I don't think it works that way.

So let's say I create a graph for a service item that is used in a webmap:

service = "5ce9a509a99241cb921c4c10b9743f0b"
graphService = itemgraph.create_dependency_graph(gis, [service])
for i in graphService.all_items("node"):
    print("item: "+str(i.item.title)+"; type: "+str(i.item.type)+ " (id: {})".format(i.item.id))
    print("contained_by: "+str(i.contained_by()))
    print("contains: "+str(i.contained_by()))
    print("required_by: "+str(i.required_by()))
    print("requires: "+str(i.requires()))
    print("")

# item: dev actifs; type: Feature Service (id: 5ce9a509a99241cb921c4c10b9743f0b)
# contained_by: []
# contains: []
# required_by: []
# requires: [ItemNode(id: b67713a58af646d287d4405a3fdcfd24, item: gestion_actifs_export)]
#
# item: gestion_actifs_export; type: File Geodatabase (id: b67713a58af646d287d4405a3fdcfd24)
# contained_by: [ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# contains: [ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# required_by: [ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# requires: []
#

So there are 2 nodes in my graph, the first being the service itself, and the second is the FGDB from which the service was published. I thought that the webmap would be present under contained_by or required_by, which is not the case.

If I create instead the graph for the webmap:

wm = "81634afe93fa4cf0b9b6c0e645ae1dba"
graphWm = itemgraph.create_dependency_graph(gis, [wm])
for i in graphWm.all_items("node"):
    print("item: "+str(i.item.title)+"; type: "+str(i.item.type)+ " (id: {})".format(i.item.id))
    print("contained_by: "+str(i.contained_by()))
    print("contains: "+str(i.contained_by()))
    print("required_by: "+str(i.required_by()))
    print("requires: "+str(i.requires()))
    print("")

# item: dev actifs; type: Web Map (id: 81634afe93fa4cf0b9b6c0e645ae1dba)
# contained_by: []
# contains: []
# required_by: []
# requires: [ItemNode(id: b67713a58af646d287d4405a3fdcfd24, item: gestion_actifs_export), ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
#
# item: dev actifs; type: Feature Service (id: 5ce9a509a99241cb921c4c10b9743f0b)
# contained_by: [ItemNode(id: 81634afe93fa4cf0b9b6c0e645ae1dba, item: dev actifs)]
# contains: [ItemNode(id: 81634afe93fa4cf0b9b6c0e645ae1dba, item: dev actifs)]
# required_by: [ItemNode(id: 81634afe93fa4cf0b9b6c0e645ae1dba, item: dev actifs)]
# requires: [ItemNode(id: b67713a58af646d287d4405a3fdcfd24, item: gestion_actifs_export)]
#
# item: gestion_actifs_export; type: File Geodatabase (id: b67713a58af646d287d4405a3fdcfd24)
# contained_by: [ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# contains: [ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# required_by: [ItemNode(id: 81634afe93fa4cf0b9b6c0e645ae1dba, item: dev actifs), ItemNode(id: 5ce9a509a99241cb921c4c10b9743f0b, item: dev actifs)]
# requires: []
#

There are 3 nodes in my graph, the first being the webmap itself, the second being the service included in the webmap and the third the FGDB.

Is this working as intended? Meaning from the webmap graph I can get the feature service, but I can't get the webmap from the feature service graph?

Thanks!