# B.16 graph.*
_Peios / Using Peios / Events / Field Index_
> Every field the evman catalogue defines under graph: its type, values and meaning, and the events that carry it.
Every field the catalogue defines under `graph`, in path order. Each entry gives the field's definition and, under **Carried by**, every event type that writes it.
## B.16.1 `graph.context`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
The graph execution context an event belongs to: one boot's start of its
service set, or one on-demand start of a service and everything it needs.
Records with the same context belong to one attempt to bring a set of
services up.
Numbered from 0 in the order peinit creates contexts. Not durable: the
numbering starts again when peinit does.
**Carried by:**
- [`peinit.graph.operation.ended`](/peios/using-peios/events/peinit/peinit-graph-operation-ended.md)
## B.16.2 `graph.counts.added`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many service definitions a configuration reload added: names that
had no definition before.
Written only when the reload succeeded. A failed reload changed nothing,
and carries no counts.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.3 `graph.counts.discarded`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many definitions a configuration reload withdrew and dropped at
once, because their services were not running. Written only when the
reload succeeded, as `graph.counts.added` is.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.4 `graph.counts.marked-removed`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many definitions a configuration reload withdrew from services that
were still running. Such a service is left running, cannot be started
again, and is discarded once it stops. Written only when the reload
succeeded, as `graph.counts.added` is.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.5 `graph.counts.restored`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many definitions a configuration reload brought back after an
earlier reload had removed them while their services were still
running. Written only when the reload succeeded, as
`graph.counts.added` is.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.6 `graph.counts.undecodable`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many definitions a configuration reload found in the registry but
could not decode. Each such service is failed, or, if it was running,
left running with its definition marked removed. Not counted under
`graph.counts.marked-removed` or `graph.counts.discarded`, because the
key is still there. Written only when the reload succeeded, as
`graph.counts.added` is.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.7 `graph.counts.updated`
- **Type:** `uint`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
How many existing service definitions a configuration reload changed.
Written only when the reload succeeded, as `graph.counts.added` is.
**Carried by:**
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
## B.16.8 `graph.phase`
- **Type:** `str.enum`
- **Values:** `boot` · `reload-config` · `phase2-boot`
- **Set:** open
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
When the service graph was validated. The phase changes what a finding
did: at `boot`, the services it names are marked and the boot continues;
at `reload-config`, the whole reload is rejected and nothing is applied;
at `phase2-boot`, the boot plan itself could not be built.
**Carried by:**
- [`peinit.graph.validation.failed`](/peios/using-peios/events/peinit/peinit-graph-validation-failed.md)
- [`peinit.graph.validation.warned`](/peios/using-peios/events/peinit/peinit-graph-validation-warned.md)
## B.16.9 `graph.role`
- **Type:** `str`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
The role no service fills. A role is a virtual name a service declares it
provides, such as `authn`, and other services depend on the role rather
than on a service name. The services that need it are in
`graph.services`.
**Carried by:**
- [`peinit.graph.validation.warned`](/peios/using-peios/events/peinit/peinit-graph-validation-warned.md)
## B.16.10 `graph.services`
- **Type:** `str[]`
- **Asserted:** no
- **Carried in:** the payload
- **Defined in:** `peinit.evman`
The services a graph finding involves. For a dependency cycle, the
services in the cycle, in the order the cycle runs; for an unfilled role, the
services that need the role and cannot start; for a reload during the
boot window, the services whose definitions were deferred.
**Carried by:**
- [`peinit.boot.downgraded`](/peios/using-peios/events/peinit/peinit-boot-downgraded.md)
- [`peinit.config.reload.applied`](/peios/using-peios/events/peinit/peinit-config-reload-applied.md)
- [`peinit.config.reload.deferred`](/peios/using-peios/events/peinit/peinit-config-reload-deferred.md)
- [`peinit.graph.validation.failed`](/peios/using-peios/events/peinit/peinit-graph-validation-failed.md)
- [`peinit.graph.validation.warned`](/peios/using-peios/events/peinit/peinit-graph-validation-warned.md)
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