Documentation
¶
Overview ¶
Package tools manages the host binaries the obol CLI shells out to (kubectl, helm, k3d, helmfile, k9s) plus the helm-diff plugin.
It provides three things:
- an embedded, checksum-pinned manifest (manifest.yaml) of the versions obol expects, kept in lockstep with obolup.sh;
- a resolver (Path / Resolve) that picks the binary to run in the order OBOL_<TOOL> env override → obol-managed bin dir → compatible $PATH copy;
- an installer that downloads, verifies sha256 (fail closed), extracts and atomically installs managed copies into the obol bin dir.
This is what lets an `obol` installed by a package manager (Homebrew cask, deb/rpm) bootstrap its own toolchain without obolup.sh.
Index ¶
- Constants
- func CompareVersions(a, b string) int
- func Compatible(policy, want, have string) bool
- func EnsureUI(ctx context.Context, u *ui.UI, binDir string, opts EnsureOptions) error
- func EnvVar(name string) string
- func MissingError(name string) error
- func ParseVersion(pattern, out string) (string, error)
- func Path(binDir, name string) string
- func ProbeVersion(t Tool, path string) (string, error)
- type Asset
- type EnsureOptions
- type Installer
- type Manifest
- type PluginInfo
- type Resolution
- type Result
- type Source
- type Status
- type Tool
Constants ¶
const ( StateOK = "ok" StateOutdated = "outdated" StateNewer = "newer" StateMissing = "missing" StateUnknown = "unknown" // present but version could not be read )
Tool states reported by Status.
const ( CompatSkew1 = "skew1" // same major, minor within ±1 of the pin CompatMinor = "minor" // same major, minor >= the pin's minor CompatAny = "any" // any version )
Compat policies for accepting a $PATH binary instead of a managed copy.
const ( KindBinary = "binary" KindHelmPlugin = "helm-plugin" )
Tool kinds.
const ( FormatRaw = "raw" FormatTarGz = "tar.gz" FormatZip = "zip" )
Archive formats.
const MissingHint = "run 'obol upgrade' to install missing tools"
MissingHint is the user-facing remedy for a missing tool.
Variables ¶
This section is empty.
Functions ¶
func CompareVersions ¶
CompareVersions returns -1, 0 or 1. Unparseable versions sort lowest.
func Compatible ¶
Compatible reports whether version `have` satisfies policy for pin `want`.
skew1: same major, |minor(have) - minor(want)| <= 1 (kubectl skew policy) minor: same major, minor(have) >= minor(want) (helm 3.x, k3d 5.x, helmfile 1.x) any: always
func EnsureUI ¶
EnsureUI runs Ensure and prints progress. Used by `obol stack init/up` (missing required tools only) and `obol upgrade` (all tools, Upgrade).
func MissingError ¶
MissingError formats the standard "tool not found" error.
func ParseVersion ¶
ParseVersion extracts the first x.y.z from out using pattern (whose first capture group is the version) or a generic semver pattern.
Types ¶
type Asset ¶
type Asset struct {
URL string `yaml:"url"`
SHA256 string `yaml:"sha256"`
Member string `yaml:"member,omitempty"`
}
Asset is one downloadable artifact for a single os/arch.
type EnsureOptions ¶
type EnsureOptions struct {
// Names limits the tools considered (default: all manifest tools).
Names []string
// Upgrade also replaces outdated obol-managed copies. Without it only
// missing tools are installed. Tools resolved from $PATH or an OBOL_<TOOL>
// override are never modified, and newer managed copies are never
// downgraded.
Upgrade bool
// OnInstall is called before each download, OnDone after each attempt.
OnInstall func(s Status)
OnDone func(r Result)
}
EnsureOptions controls Ensure.
type Installer ¶
type Installer struct {
BinDir string
Manifest *Manifest
Client *http.Client
GOOS string
GOARCH string
// PluginsDir overrides `helm env HELM_PLUGINS` discovery (tests).
PluginsDir string
}
Installer downloads, verifies and installs manifest tools into BinDir.
func NewInstaller ¶
NewInstaller returns an installer for the host platform using the embedded manifest.
func (*Installer) Ensure ¶
Ensure installs missing (and with Upgrade, outdated managed) tools. It keeps going after a failure and returns the joined errors.
func (*Installer) HelmPluginsDir ¶
HelmPluginsDir returns the plugin directory helm uses (`helm env HELM_PLUGINS`), honouring HELM_PLUGINS / HELM_DATA_HOME like helm does. This is the same directory obolup.sh's `helm plugin install` writes to.
type Manifest ¶
type Manifest struct {
Tools []Tool `yaml:"tools"`
}
Manifest is the parsed manifest.yaml.
func Default ¶
func Default() *Manifest
Default returns the embedded manifest. It panics only if the embedded file is malformed, which TestEmbeddedManifestValid guards against.
func ParseManifest ¶
ParseManifest parses and validates manifest YAML.
func (*Manifest) RequiredNames ¶
RequiredNames returns the tools `obol stack init/up` auto-installs. skip lets callers drop backend-specific tools (k3d on the k3s backend).
type PluginInfo ¶
PluginInfo describes an installed helm plugin.
func FindPlugins ¶
func FindPlugins(dir, name string) []PluginInfo
FindPlugins lists plugins in dir whose plugin.yaml name equals name.
type Resolution ¶
type Resolution struct {
Name string
Path string // binary to exec; for SourceMissing, the managed path it would be installed to
Source Source
// Version is filled when the resolver had to probe it ($PATH candidates).
Version string
// Rejected/RejectedVersion describe a $PATH binary skipped as incompatible.
Rejected string
RejectedVersion string
}
Resolution is the outcome of resolving one binary tool.
func Resolve ¶
func Resolve(binDir, name string) Resolution
Resolve resolves a binary tool in order:
- OBOL_<TOOL> env override (used as-is, no version check);
- <binDir>/<name> if it is an executable file (obol-managed);
- the first <name> on $PATH whose version is compatible with the manifest pin (see the compat policies in manifest.yaml).
func (Resolution) Found ¶
func (r Resolution) Found() bool
Found reports whether a usable binary was resolved.
type Result ¶
type Result struct {
Name string
From string // previous managed version, "" if newly installed
To string
Installed bool
Err error
}
Result records what Ensure did for one tool.
type Status ¶
type Status struct {
Name string `json:"name"`
Wanted string `json:"wanted"`
Installed string `json:"installed,omitempty"`
Path string `json:"path,omitempty"`
Source Source `json:"source"`
State string `json:"state"`
Required bool `json:"required"`
Note string `json:"note,omitempty"`
}
Status is the check-only view of one tool, for `obol update`.
func (Status) NeedsAction ¶
NeedsAction reports whether `obol upgrade` would change this tool. Only obol-managed copies (or missing tools) are ever touched.
type Tool ¶
type Tool struct {
Name string `yaml:"name"`
Version string `yaml:"version"`
ObolupVar string `yaml:"obolupVar"`
Required bool `yaml:"required"`
Kind string `yaml:"kind,omitempty"`
PluginName string `yaml:"pluginName,omitempty"`
Compat string `yaml:"compat,omitempty"`
VersionArgs []string `yaml:"versionArgs,omitempty"`
VersionRegex string `yaml:"versionRegex,omitempty"`
Format string `yaml:"format"`
Assets map[string]Asset `yaml:"assets"`
}
Tool is one manifest entry.
Source Files