Documentation
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Overview ¶
Package host gives Bee's components a read-only view of nonsecret host facts: the running Bee executable, the home and working folders, the names (never the values) of the environment variables, the identity of the machine's current boot, and the absolute path of an installed executable by its bare name. Drivers locate the harnesses installed on the machine through it, generated hooks call back into the same Bee instead of finding another one on PATH, and placement proves that a process of an earlier boot is gone. Its hostprocess Lua module reports whether a recorded process group still has members, so placement also proves that a child tree of the current boot is gone.
Index ¶
Constants ¶
const ObserveGroupAction = "hostprocess.observe_group"
ObserveGroupAction is the permission to ask whether a process group still has members; the resource is the decimal process group id.
const StorageID = "bee.harness.host:environment"
StorageID is the environment storage the host facts are read through.
Variables ¶
var ProcessModule = &luaapi.ModuleDef{ Name: "hostprocess", Description: "Membership of recorded host process groups", Class: []string{luaapi.ClassIO, luaapi.ClassNondeterministic}, Build: buildProcessModule, Types: processModuleTypes, }
ProcessModule lets a component prove that a process group it recorded has no members left. A group id stays allocated while any process belongs to the group, so an empty group can never be refilled under the same id by the recorded tree. A present group proves nothing about which processes are in it.
Functions ¶
This section is empty.
Types ¶
type Component ¶
type Component struct{}
Component registers the host environment storage and the process group module at boot.
func (*Component) DependsOn ¶
DependsOn implements boot.Component: the storage registers into the environment registry the env component creates, and the module into the Lua engine.
func (*Component) Load ¶
Load implements boot.Component: it registers the storage before the registry's environment variables are read.
Source Files