jschoubben
4dbb6b2aec
Every state a module keeps has a read tool (the lead's ruling). Each key of bounds now holds what it bounds and when it ends, and builder_bounds lists them with the time left. Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig
428 lines
22 KiB
Go
428 lines
22 KiB
Go
// Command mesh-delivery-builder-tools serves the builder's tools (novox/hq issue 1945): the runtime launches it for a call.
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// builder_stuck reads the builder's builds and reasks states and the build modules' steps through the builder's state and
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// reads; builder_ask_again writes one value of the reasks state, which the builder watches and answers. The builder is the
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// other program: it serves no tool (ADR 0437 §4).
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package main
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"strings"
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"sync"
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"time"
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"git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/buildrun"
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stdio "git.novox.be/novox/mesh-sdk/go"
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"git.novox.be/novox/mesh-sdk/go/delivery"
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"git.novox.be/novox/mesh-sdk/go/handacts"
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"git.novox.be/novox/mesh-sdk/go/views"
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"git.novox.be/novox/mesh-delivery/sdk/enginereads"
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"mesh-delivery-builder/internal/build"
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"mesh-delivery-builder/internal/versions"
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)
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// EngineReadsTool lists, asks again and drops what each counted node's engine reads, as the builder keeps it.
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const EngineReadsTool = "builder_engine_reads"
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// queueAsker writes a queues value and waits for the builder's answer to it.
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type queueAsker func(key string, value []byte) (json.RawMessage, error)
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// Tools are the builder's tools: stuck reads, askAgain writes the reasks value, queue writes a queues value and waits for
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// the builder's read, buildAgain writes a reasks value of mode build and waits for the builder's answer.
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// tags writes a tag-asks value and waits for the builder's answer; ta reads tag-asks.
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func Tools(r build.StuckReader, askAgain func(key string, value []byte) error, queue, buildAgain queueAsker, since build.LogSince, now func() time.Time, vs versions.Reader,
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tags queueAsker, ta, fw, of versions.Reader) []stdio.Tool {
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str := func(args map[string]any, k string) string { s, _ := args[k].(string); return strings.TrimSpace(s) }
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// handAct writes a reasks value of a versions hand act and answers the builder's answer, or its refusal as an error.
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handAct := func(key string, value []byte, err error) (any, error) {
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if err != nil {
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return nil, err
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}
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raw, err := buildAgain(key, value)
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if err != nil {
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return nil, err
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}
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a, err := build.DecodeReAsk(raw)
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if err != nil {
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return nil, err
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}
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if a.Refused {
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return nil, errors.New(a.Answer)
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}
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return map[string]any{"key": key, "name": a.Name, "do": a.Do, "version": a.Version, "answer": a.Answer}, nil
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}
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tagAct := func(key string, value []byte, err error) (any, error) {
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if err != nil {
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return nil, err
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}
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raw, err := tags(key, value)
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if err != nil {
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return nil, err
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}
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return versions.DecodeTagAsk(raw)
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}
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nameFP := map[string]any{"type": "object", "required": []string{"name", "fp", "why"}, "properties": map[string]any{
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"name": map[string]any{"type": "string", "description": "the numbered name, <module>/<artifact>, as builder_versions lists it"},
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"fp": map[string]any{"type": "string", "description": "the fingerprint, src2:<hex>"},
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"why": map[string]any{"type": "string", "description": "why, in plain words"}}}
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branch := func(head bool) map[string]any {
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req := []string{"repository", "branch", "why"}
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props := map[string]any{
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"repository": map[string]any{"type": "string", "description": "<owner>/<name>"},
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"branch": map[string]any{"type": "string", "description": "the branch; its cleaned name is the tag"},
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"why": map[string]any{"type": "string", "description": "why, in plain words"}}
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if head {
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req = append(req, "head")
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props["head"] = map[string]any{"type": "string", "description": "the commit the tagged version is built from"}
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}
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return map[string]any{"type": "object", "required": req, "properties": props}
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}
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return []stdio.Tool{
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{Name: versions.PublishAgainTool, Description: versions.PublishAgainDescription, Input: nameFP,
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Run: func(args map[string]any) (any, error) {
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return handAct(build.NewPublishAgain(str(args, "name"), str(args, "fp"), str(args, "why"), stdio.CallerOf(args), now()))
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}},
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{Name: versions.FloorAgainTool, Description: versions.FloorAgainDescription,
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Input: map[string]any{"type": "object", "required": []string{"name", "why"}, "properties": map[string]any{
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"name": map[string]any{"type": "string", "description": "the numbered name, <module>/<artifact>"},
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"why": map[string]any{"type": "string", "description": "why, in plain words"}}},
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Run: func(args map[string]any) (any, error) {
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return handAct(build.NewFloorAgain(str(args, "name"), str(args, "why"), stdio.CallerOf(args), now()))
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}},
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{Name: versions.TagTool, Description: versions.TagDescription, Input: branch(true),
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Run: func(args map[string]any) (any, error) {
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return tagAct(versions.NewTagAsk(str(args, "repository"), str(args, "branch"), str(args, "head"), str(args, "why"), stdio.CallerOf(args), now()))
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}},
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{Name: versions.UntagTool, Description: versions.UntagDescription, Input: branch(false),
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Run: func(args map[string]any) (any, error) {
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return tagAct(versions.NewUntag(str(args, "repository"), str(args, "branch"), str(args, "why"), stdio.CallerOf(args), now()))
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}},
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{Name: versions.TagAsksTool, Description: versions.TagAsksDescription,
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Input: map[string]any{"type": "object", "properties": map[string]any{
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"repository": map[string]any{"type": "string", "description": "only this repository's asks, <owner>/<name>"}}},
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Run: func(args map[string]any) (any, error) { return versions.AnswerTagAsks(ta, str(args, "repository")) }},
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{Name: versions.OldFormTool, Description: versions.OldFormDescription,
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Input: map[string]any{"type": "object", "properties": map[string]any{
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"drop": map[string]any{"type": "string", "description": "a retired node to drop from the count by hand"},
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"why": map[string]any{"type": "string", "description": "with drop: why, in plain words"}}},
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Run: func(args map[string]any) (any, error) {
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if node := str(args, "drop"); node != "" {
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return handAct(build.NewOldFormDrop(node, str(args, "why"), stdio.CallerOf(args), now()))
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}
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return versions.AnswerOldForm(of)
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}},
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{Name: versions.FloorWaitsTool, Description: versions.FloorWaitsDescription,
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Input: map[string]any{"type": "object", "properties": map[string]any{}},
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Run: func(map[string]any) (any, error) { return versions.AnswerFloorWaits(fw) }},
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{Name: versions.VersionsTool, Description: versions.VersionsDescription,
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Input: map[string]any{"type": "object", "required": []string{"name"}, "properties": map[string]any{
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"name": map[string]any{"type": "string", "description": "the package, image, bundle or archive name"},
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"version": map[string]any{"type": "string", "description": "one version, to ask whether it is recorded"},
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"digest": map[string]any{"type": "string", "description": "with version: the digest the holder received"}}},
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Run: func(args map[string]any) (any, error) {
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return versions.AnswerVersions(context.Background(), vs, str(args, "name"), str(args, "version"), str(args, "digest"))
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}},
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{Name: build.StuckTool,
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Description: "Every build key that waits (building or queued), oldest first: its module, fingerprint, step words and since when, and each ask it " +
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"waits on by language with its id, when it was put, its asking (1 for the first; the builder asks an ask again when it can no longer be " +
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"answered, at most 3 times) and what its build module's steps hold of it (none, or its state on its node since its start). The " +
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"seat workers' delivery counts are not readable by the builder. dead_letters says whether the builder hears the asks the build seats give up " +
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"on (issue 734), and why not: heard, a given-up ask is asked again at once; deaf, at its check bound. With module, that module's keys only. Read-only.",
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Input: map[string]any{"type": "object", "properties": map[string]any{
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"module": map[string]any{"type": "string", "description": "only this module's keys"}}},
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Run: func(args map[string]any) (any, error) { return r.Stuck(str(args, "module")) }},
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{Name: build.AskAgainTool,
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Description: "Ask a waiting build key's asks again now, under new ids the key then names, as the builder does by itself for an ask its build " +
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"seat's stream gave up on. The builder answers in the reasks state, which " + build.StuckTool + " shows beside the key; a key no ask of " +
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"which waits is answered so and nothing is asked. An ask whose step already runs on a node is asked again too: it is then " +
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"built twice, the first run's work wasted and its end read by nobody, never a wrong key; builder_stuck shows whether a step runs.",
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Input: map[string]any{"type": "object", "required": []string{"module", "fp", "why"}, "properties": map[string]any{
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"module": map[string]any{"type": "string", "description": "the module's name"},
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"fp": map[string]any{"type": "string", "description": "its new-form fingerprint, src2:<hex>, as builder_stuck shows it"},
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"why": map[string]any{"type": "string", "description": "why it is asked again, in plain words"}}},
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Run: func(args map[string]any) (any, error) {
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key, value, err := build.NewReAsk(str(args, "module"), str(args, "fp"), str(args, "why"), stdio.CallerOf(args), now())
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if err != nil {
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return nil, err
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}
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if err := askAgain(key, value); err != nil {
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return nil, fmt.Errorf("the ask could not be written to %s: %w", build.ReAsksBucket, err)
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}
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return map[string]any{"key": key, "asked": true,
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"next": "the builder answers in " + build.ReAsksState + "." + key + "; " + build.StuckTool + " shows the answer and the new ask"}, nil
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}},
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{Name: build.BuildAgainTool,
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Description: "Build a failed key again (rebuild a module, build a failed key again): the builder writes the key of module and " +
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"fingerprint building as a new revision of the same key and asks the build seats, as it does by itself when it looks at a module " +
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"again (ADR 0429 clause 18). Answers the new revision and the ask id of each build module (go, node, image). Refuses a key that " +
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"is not failed, and says why: done (nothing to do), or waiting (building or queued: " + build.AskAgainTool + " asks its waiting asks " +
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"again); a key failed for a reason the builder never retries on the same fingerprint (a pin missing, a version taken, digests that " +
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"differ) and a fingerprint its module no longer has are refused too. Use it for a key builder_stuck does not show, which failed.",
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Input: map[string]any{"type": "object", "required": []string{"module", "fp", "why"}, "properties": map[string]any{
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"module": map[string]any{"type": "string", "description": "the module's name"},
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"fp": map[string]any{"type": "string", "description": "its new-form fingerprint, src2:<hex>"},
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"why": map[string]any{"type": "string", "description": "why it is built again, in plain words"}}},
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Run: func(args map[string]any) (any, error) {
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key, value, err := build.NewBuildAgain(str(args, "module"), str(args, "fp"), str(args, "why"), stdio.CallerOf(args), now())
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if err != nil {
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return nil, err
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}
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raw, err := buildAgain(key, value)
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if err != nil {
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return nil, err
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}
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r, err := build.DecodeReAsk(raw)
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if err != nil {
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return nil, err
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}
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if r.Refused {
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return nil, errors.New(r.Answer)
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}
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if r.Failed != "" {
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return nil, errors.New(r.Answer)
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}
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if r.Revision == 0 && !r.Pending {
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return nil, fmt.Errorf("the builder answered neither a new revision nor a refusal (an older builder?): %s", r.Answer)
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}
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return map[string]any{"key": key, "revision": r.Revision, "asks": r.Asks, "answer": r.Answer,
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"next": build.StuckTool + " shows the key and its asks while they wait"}, nil
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}},
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{Name: delivery.BuildsSinceTool,
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Description: "Every build that ended since a time, oldest first, from the builder's log build-log (kept 30 days): per build its module, " +
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"fingerprint, source revision, repository, directory, commit and ref, the build node, when it ended, its outcome (done, failed or " +
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"queued), the manifest built, the bases it was built against and each artifact made with its digest and reference. more says the " +
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"log held more than one answer carries: ask again from the last build's time. What the operator's command nox builds reads. Read-only.",
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Input: map[string]any{"type": "object", "required": []string{"since"}, "properties": map[string]any{
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"since": map[string]any{"type": "string", "description": "RFC 3339 time; the builds that ended at or after it"}}},
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Run: func(args map[string]any) (any, error) {
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at, err := time.Parse(time.RFC3339Nano, str(args, "since"))
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if err != nil {
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return nil, fmt.Errorf("since %q is not an RFC 3339 time: %w", str(args, "since"), err)
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}
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return build.BuildsSince(since, at)
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}},
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{Name: build.AnnounceAgainTool,
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Description: "Announce a done build again (take in again, compose again): the builder writes the done key of module and fingerprint " +
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"again, unchanged, as a new revision of the same key (its content, artifacts and manifest stay identical), so the controller's " +
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"take-in hears it and composes the module and writes its grant again. Use it when a done build was taken in but its composition " +
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"or grant is gone and every want is refused for it. Answers the new revision. Refuses a key that is not done: " + build.BuildAgainTool +
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" builds a failed key again, " + build.AskAgainTool + " asks a waiting key's asks again.",
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Input: map[string]any{"type": "object", "required": []string{"module", "fp", "why"}, "properties": map[string]any{
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"module": map[string]any{"type": "string", "description": "the module's name"},
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"fp": map[string]any{"type": "string", "description": "its new-form fingerprint, src2:<hex>"},
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"why": map[string]any{"type": "string", "description": "why it is announced again, in plain words"}}},
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Run: func(args map[string]any) (any, error) {
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key, value, err := build.NewAnnounceAgain(str(args, "module"), str(args, "fp"), str(args, "why"), stdio.CallerOf(args), now())
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if err != nil {
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return nil, err
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}
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raw, err := buildAgain(key, value)
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if err != nil {
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return nil, err
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}
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r, err := build.DecodeReAsk(raw)
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if err != nil {
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return nil, err
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}
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if r.Refused || r.Revision == 0 {
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return nil, errors.New(r.Answer)
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}
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return map[string]any{"key": key, "revision": r.Revision, "answer": r.Answer}, nil
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}},
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{Name: build.SeatQueueTool,
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Description: "What waits on a build seat's stream (SEAT_NODE_BUILD_<LANGUAGE>), as the builder reads it: the stream's message count and " +
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"sequences, and per kind (delivery, check, recheck) its messages oldest first, at most limit each, with sequence, ask id, when asked " +
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"and put, age, the state of the step a build node wrote for it, and whether the builder counts it as still waiting or as given up " +
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"on (its worker delivered it its most times) or taken; and the ask asked last that a node took. The workers' delivery counts are " +
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"not readable by the builder (nats.nats_streams shows them). Read by the builder, which alone may read the stream; read-only.",
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Input: map[string]any{"type": "object", "properties": map[string]any{
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"language": map[string]any{"type": "string", "description": "go, node or image (default go)"},
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"seat": map[string]any{"type": "string", "description": "or the seat: node-build-go, node-build-node, node-build-image"},
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"limit": map[string]any{"type": "integer", "description": fmt.Sprintf("messages read of each kind (default %d, at most %d)", build.DefaultQueueLimit, build.MaxQueueLimit)}}},
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Run: func(args map[string]any) (any, error) {
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language := build.LanguageOf(str(args, "language"))
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if language == "" {
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language = build.LanguageOf(str(args, "seat"))
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}
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if language == "" {
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language = delivery.AskGo
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}
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limit, _ := args["limit"].(float64)
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key, value, err := build.NewQueueAsk(language, int(limit), stdio.CallerOf(args), now())
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if err != nil {
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return nil, err
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}
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return queue(key, value)
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}},
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}
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}
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// askQueue writes the queues value at key and waits, on a watch of the key, at most bound for the builder's answer.
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func askQueue(s stdio.KeptState, bound time.Duration) queueAsker {
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return askKept(s, build.QueuesState, build.QueuesBucket, "the read", bound, func(v []byte) bool {
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a, err := build.DecodeQueueAsk(v)
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return err == nil && !a.Answered.IsZero()
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})
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}
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// askKept writes a value at key of a state the builder watches and answers there, and waits, on a watch of the key, at most
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// bound for a value written after it that answered says is the builder's answer.
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func askKept(s stdio.KeptState, state, bucket, what string, bound time.Duration, answered func([]byte) bool) queueAsker {
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return func(key string, value []byte) (json.RawMessage, error) {
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heard := make(chan json.RawMessage, 1)
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var rev uint64
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var mu sync.Mutex
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if err := s.Watch(key, func(c stdio.StateChange) error {
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mu.Lock()
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mine := rev
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mu.Unlock()
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if c.Op != "put" || mine == 0 || c.Revision <= mine {
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return nil
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}
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if answered(c.Value) {
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select {
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case heard <- c.Value:
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default:
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}
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}
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return nil
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}); err != nil {
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return nil, fmt.Errorf("watching %s.%s: %w", state, key, err)
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}
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r, err := s.Put(key, json.RawMessage(value))
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if err != nil {
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return nil, fmt.Errorf("%s could not be written to %s: %w", what, bucket, err)
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}
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mu.Lock()
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rev = r
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mu.Unlock()
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// The watch may have heard the answer before the revision was known: read it once too.
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if e, err := s.Get(key); err == nil && e != nil && e.Revision > r && answered(e.Value) {
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return e.Value, nil
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}
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wait, cancel := context.WithTimeout(context.Background(), bound) // a context's bound, no timer (ADR 0437 §8)
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defer cancel()
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select {
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case v := <-heard:
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return v, nil
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case <-wait.Done():
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return nil, fmt.Errorf("the builder did not answer %s.%s within %s: it is not running, or cannot read %s", state, key, bound, bucket)
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}
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}
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}
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func read(s stdio.KeptState) build.StateRead {
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return build.StateRead{Keys: s.Keys, Get: func(key string) (json.RawMessage, time.Time, error) {
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e, err := s.Get(key)
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if err != nil || e == nil {
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return nil, time.Time{}, err
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}
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return e.Value, time.Time{}, nil
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}, Written: func(key string) time.Time {
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e, err := s.Get(key)
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if err != nil || e == nil {
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return time.Time{}
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}
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return written(s, key, e.Revision)
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}}
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}
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// written is when the key's revision was written, from its history, or zero.
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func written(s stdio.KeptState, key string, revision uint64) time.Time {
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h, err := s.History(key)
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if err != nil {
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return time.Time{}
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}
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for _, r := range h {
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if r.Revision == revision {
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return r.At
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}
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}
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return time.Time{}
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}
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func main() {
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steps := map[string]build.StateRead{}
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for _, bm := range build.StuckBuildModules {
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|
steps[bm] = read(stdio.State(bm + ".steps"))
|
|
}
|
|
reasks := stdio.State(build.ReAsksState)
|
|
r := build.StuckReader{Logf: func(f string, a ...any) { fmt.Fprintf(os.Stderr, "[mesh-delivery-builder-tools] "+f+"\n", a...) }, Builds: read(stdio.State("builds")), ReAsks: read(reasks), Steps: steps,
|
|
Hearing: read(stdio.State(buildrun.HearingState))}
|
|
put := func(key string, value []byte) error {
|
|
_, err := reasks.Put(key, json.RawMessage(value))
|
|
return err
|
|
}
|
|
buildAgain := askKept(reasks, build.ReAsksState, build.ReAsksBucket, "the request", 25*time.Second, func(v []byte) bool {
|
|
a, err := build.DecodeReAsk(v)
|
|
return err == nil && !a.Answered.IsZero()
|
|
})
|
|
vs := stdio.State(versions.State)
|
|
vr := versions.Reader{Keys: vs.Keys, Get: func(key string) (json.RawMessage, bool, error) {
|
|
e, err := vs.Get(key)
|
|
if err != nil || e == nil {
|
|
return nil, false, err
|
|
}
|
|
return e.Value, true, nil
|
|
}}
|
|
ts := stdio.State(versions.TagAsksState)
|
|
tags := askKept(ts, versions.TagAsksState, versions.TagAsksBucket, "the ask", 25*time.Second, func(v []byte) bool {
|
|
a, err := versions.DecodeTagAsk(v)
|
|
return err == nil && !a.Answered.IsZero()
|
|
})
|
|
tr := versions.Reader{Keys: ts.Keys, Get: func(key string) (json.RawMessage, bool, error) {
|
|
e, err := ts.Get(key)
|
|
if err != nil || e == nil {
|
|
return nil, false, err
|
|
}
|
|
return e.Value, true, nil
|
|
}}
|
|
fs := stdio.State(versions.FloorWaitsState)
|
|
fr := versions.Reader{Keys: fs.Keys, Get: func(key string) (json.RawMessage, bool, error) {
|
|
e, err := fs.Get(key)
|
|
if err != nil || e == nil {
|
|
return nil, false, err
|
|
}
|
|
return e.Value, true, nil
|
|
}}
|
|
ofs := stdio.State(versions.OldFormState)
|
|
ofr := versions.Reader{Keys: ofs.Keys, Get: func(key string) (json.RawMessage, bool, error) {
|
|
e, err := ofs.Get(key)
|
|
if err != nil || e == nil {
|
|
return nil, false, err
|
|
}
|
|
return e.Value, true, nil
|
|
}}
|
|
bs := stdio.State(versions.BoundsState)
|
|
br := versions.Reader{Keys: bs.Keys, Get: func(key string) (json.RawMessage, bool, error) {
|
|
e, err := bs.Get(key)
|
|
if err != nil || e == nil {
|
|
return nil, false, err
|
|
}
|
|
return e.Value, true, nil
|
|
}}
|
|
tools := Tools(r, put, askQueue(stdio.State(build.QueuesState), 25*time.Second), buildAgain, stdio.Log(delivery.BuilderLog).Since, time.Now, vr, tags, tr, fr, ofr)
|
|
// The builder's expiring keys (state bounds): what each bounds and when it ends.
|
|
tools = append(tools, stdio.Tool{Name: versions.BoundsTool, Description: versions.BoundsDescription,
|
|
Input: map[string]any{"type": "object", "properties": map[string]any{}},
|
|
Run: func(map[string]any) (any, error) {
|
|
rows, err := versions.AnswerBounds(br, time.Now())
|
|
return map[string]any{"bounds": rows}, err
|
|
}})
|
|
// What each counted node's engine reads, as the builder keeps it (ADR 0618 §2, ADR 0624 §1): listed, one node asked
|
|
// again, or one node's key dropped.
|
|
tools = append(tools, enginereads.Tool(EngineReadsTool, "the builder", enginereads.KeptState(stdio.State("engine-reads")), true, time.Now))
|
|
// builder_first_views and builder_first_view_again: where the builder's first views of the indexer's and the assigner's
|
|
// states stand, and asking one again by hand (ADR 0615, DLV-M1).
|
|
tools = append(tools, views.StatusTools(delivery.BuilderModule, "builder_first_views", "builder_first_view_again", stdio.State(views.StatusState), handacts.Recorder{Ask: stdio.Ask}, time.Now)...)
|
|
if err := stdio.Serve("", tools); err != nil {
|
|
fmt.Fprintf(os.Stderr, "[mesh-delivery-builder-tools] %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
}
|