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engine: resources: Add an http ui resource

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Many years ago I built and demoed a prototype of a simple web ui with a
slider, and as you moved it left and right, it started up or shutdown
some number of virtual machines.

The webui was standalone code, but the rough idea of having events from
a high-level overview flow into mgmt, was what I wanted to test out. At
this stage, I didn't even have the language built yet. This prototype
helped convince me of the way a web ui would fit into everything.

Years later, I build an autogrouping prototype which looks quite similar
to what we have today. I recently picked it back up to polish it a bit
more. It's certainly not perfect, and might even be buggy, but it's
useful enough that it's worth sharing.

If I had more cycles, I'd probably consider removing the "store" mode,
and replace it with the normal "value" system, but we would need the
resource "mutate" API if we wanted this. This would allow us to directly
change the "value" field, without triggering a graph swap, which would
be a lot less clunky than the "store" situation.

Of course I'd love to see a GTK version of this concept, but I figured
it would be more practical to have a web ui over HTTP.

One notable missing feature, is that if the "web ui" changes (rather
than just a value changing) we need to offer to the user to reload it.
It currently doesn't get an event for that, and so don't confuse your
users. We also need to be better at validating "untrusted" input here.

There's also no major reason to use the "gin" framework, we should
probably redo this with the standard library alone, but it was easier
for me to push out something quick this way. We can optimize that later.

Lastly, this is all quite ugly since I'm not a very good web dev, so if
you want to make this polished, please do! The wasm code is also quite
terrible due to limitations in the compiler, and maybe one day when that
works better and doesn't constantly deadlock, we can improve it.
This commit is contained in:
James Shubin
2025-05-02 02:14:14 -04:00
parent 6b10477ebc
commit 807c4b3430
27 changed files with 3266 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
go.mod
View File

@@ -41,8 +41,8 @@ require (
go.etcd.io/etcd/client/v3 v3.5.18
go.etcd.io/etcd/server/v3 v3.5.18
go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
golang.org/x/crypto v0.32.0
golang.org/x/sys v0.29.0
golang.org/x/crypto v0.37.0
golang.org/x/sys v0.32.0
golang.org/x/time v0.9.0
golang.org/x/tools v0.29.0
gopkg.in/yaml.v2 v2.4.0
@@ -61,10 +61,14 @@ require (
github.com/beorn7/perks v1.0.1 // indirect
github.com/bits-and-blooms/bitset v1.20.0 // indirect
github.com/bmc-toolbox/common v0.0.0-20250114061816-fab80349cae0 // indirect
github.com/bytedance/sonic v1.13.2 // indirect
github.com/bytedance/sonic/loader v0.2.4 // indirect
github.com/cenkalti/backoff/v4 v4.3.0 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/chappjc/logrus-prefix v0.0.0-20180227015900-3a1d64819adb // indirect
github.com/cloudflare/circl v1.5.0 // indirect
github.com/cloudwego/base64x v0.1.5 // indirect
github.com/cloudwego/iasm v0.2.0 // indirect
github.com/containerd/log v0.1.0 // indirect
github.com/coreos/go-semver v0.3.1 // indirect
github.com/distribution/reference v0.6.0 // indirect
@@ -73,11 +77,18 @@ require (
github.com/emirpasic/gods v1.18.1 // indirect
github.com/fatih/color v1.18.0 // indirect
github.com/felixge/httpsnoop v1.0.4 // indirect
github.com/gabriel-vasile/mimetype v1.4.9 // indirect
github.com/ghodss/yaml v1.0.0 // indirect
github.com/gin-contrib/sse v1.1.0 // indirect
github.com/gin-gonic/gin v1.10.0 // indirect
github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
github.com/go-git/go-billy/v5 v5.6.2 // indirect
github.com/go-logr/logr v1.4.2 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/go-playground/locales v0.14.1 // indirect
github.com/go-playground/universal-translator v0.18.1 // indirect
github.com/go-playground/validator/v10 v10.26.0 // indirect
github.com/goccy/go-json v0.10.5 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang-jwt/jwt/v4 v4.5.1 // indirect
github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
@@ -107,6 +118,8 @@ require (
github.com/json-iterator/go v1.1.12 // indirect
github.com/kevinburke/ssh_config v1.2.0 // indirect
github.com/klauspost/compress v1.17.11 // indirect
github.com/klauspost/cpuid/v2 v2.2.10 // indirect
github.com/leodido/go-urn v1.4.0 // indirect
github.com/mattn/go-colorable v0.1.14 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mdlayher/ethernet v0.0.0-20220221185849-529eae5b6118 // indirect
@@ -127,6 +140,7 @@ require (
github.com/nxadm/tail v1.4.11 // indirect
github.com/opencontainers/go-digest v1.0.0 // indirect
github.com/opencontainers/image-spec v1.1.0 // indirect
github.com/pelletier/go-toml/v2 v2.2.4 // indirect
github.com/pierrec/lz4/v4 v4.1.22 // indirect
github.com/pjbgf/sha1cd v0.3.2 // indirect
github.com/prometheus/client_model v0.6.1 // indirect
@@ -142,7 +156,9 @@ require (
github.com/spf13/pflag v1.0.6-0.20250109003754-5ca813443bd2 // indirect
github.com/stmcginnis/gofish v0.20.0 // indirect
github.com/tmc/grpc-websocket-proxy v0.0.0-20220101234140-673ab2c3ae75 // indirect
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
github.com/u-root/uio v0.0.0-20240224005618-d2acac8f3701 // indirect
github.com/ugorji/go/codec v1.2.12 // indirect
github.com/vishvananda/netns v0.0.5 // indirect
github.com/xanzy/ssh-agent v0.3.3 // indirect
github.com/xiang90/probing v0.0.0-20221125231312-a49e3df8f510 // indirect
@@ -163,18 +179,20 @@ require (
go.opentelemetry.io/proto/otlp v1.5.0 // indirect
go.uber.org/multierr v1.11.0 // indirect
go.uber.org/zap v1.27.0 // indirect
golang.org/x/arch v0.16.0 // indirect
golang.org/x/exp v0.0.0-20250106191152-7588d65b2ba8 // indirect
golang.org/x/net v0.34.0 // indirect
golang.org/x/sync v0.10.0 // indirect
golang.org/x/term v0.28.0 // indirect
golang.org/x/text v0.21.0 // indirect
golang.org/x/net v0.39.0 // indirect
golang.org/x/sync v0.13.0 // indirect
golang.org/x/term v0.31.0 // indirect
golang.org/x/text v0.24.0 // indirect
google.golang.org/genproto v0.0.0-20250124145028-65684f501c47 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20250124145028-65684f501c47 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20250124145028-65684f501c47 // indirect
google.golang.org/grpc v1.70.0 // indirect
google.golang.org/protobuf v1.36.4 // indirect
google.golang.org/protobuf v1.36.6 // indirect
gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
gopkg.in/warnings.v0 v0.1.2 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
gotest.tools/v3 v3.0.3 // indirect
sigs.k8s.io/yaml v1.4.0 // indirect
)