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8cc2d01caa
Makes the web app honour the `X-Forwarded-Prefix` HTTP request header that may be sent by a reverse-proxy in order to inform the app that its public routes contain a path prefix.
For instance this allows to serve the webapp via a reverse-proxy/ingress controller under a path prefix/sub path such as e.g. `/localai/` while still being able to use the regular LocalAI routes/paths without prefix when directly connecting to the LocalAI server.
Changes:
* Add new `StripPathPrefix` middleware to strip the path prefix (provided with the `X-Forwarded-Prefix` HTTP request header) from the request path prior to matching the HTTP route.
* Add a `BaseURL` utility function to build the base URL, honouring the `X-Forwarded-Prefix` HTTP request header.
* Generate the derived base URL into the HTML (`head.html` template) as `<base/>` tag.
* Make all webapp-internal URLs (within HTML+JS) relative in order to make the browser resolve them against the `<base/>` URL specified within each HTML page's header.
* Make font URLs within the CSS files relative to the CSS file.
* Generate redirect location URLs using the new `BaseURL` function.
* Use the new `BaseURL` function to generate absolute URLs within gallery JSON responses.
Closes #3095
TL;DR:
The header-based approach allows to move the path prefix configuration concern completely to the reverse-proxy/ingress as opposed to having to align the path prefix configuration between LocalAI, the reverse-proxy and potentially other internal LocalAI clients.
The gofiber swagger handler already supports path prefixes this way, see e2d9e9916d/swagger.go (L79)
Signed-off-by: Max Goltzsche <max.goltzsche@gmail.com>
55 lines
1.8 KiB
Go
55 lines
1.8 KiB
Go
package localai
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import (
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"github.com/gofiber/fiber/v2"
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"github.com/mudler/LocalAI/core/config"
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"github.com/mudler/LocalAI/core/gallery"
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"github.com/mudler/LocalAI/core/http/utils"
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"github.com/mudler/LocalAI/core/p2p"
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"github.com/mudler/LocalAI/core/services"
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"github.com/mudler/LocalAI/internal"
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"github.com/mudler/LocalAI/pkg/model"
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)
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func WelcomeEndpoint(appConfig *config.ApplicationConfig,
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cl *config.BackendConfigLoader, ml *model.ModelLoader, modelStatus func() (map[string]string, map[string]string)) func(*fiber.Ctx) error {
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return func(c *fiber.Ctx) error {
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backendConfigs := cl.GetAllBackendConfigs()
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galleryConfigs := map[string]*gallery.Config{}
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for _, m := range backendConfigs {
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cfg, err := gallery.GetLocalModelConfiguration(ml.ModelPath, m.Name)
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if err != nil {
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continue
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}
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galleryConfigs[m.Name] = cfg
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}
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modelsWithoutConfig, _ := services.ListModels(cl, ml, config.NoFilterFn, services.LOOSE_ONLY)
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// Get model statuses to display in the UI the operation in progress
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processingModels, taskTypes := modelStatus()
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summary := fiber.Map{
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"Title": "LocalAI API - " + internal.PrintableVersion(),
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"Version": internal.PrintableVersion(),
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"BaseURL": utils.BaseURL(c),
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"Models": modelsWithoutConfig,
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"ModelsConfig": backendConfigs,
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"GalleryConfig": galleryConfigs,
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"IsP2PEnabled": p2p.IsP2PEnabled(),
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"ApplicationConfig": appConfig,
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"ProcessingModels": processingModels,
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"TaskTypes": taskTypes,
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}
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if string(c.Context().Request.Header.ContentType()) == "application/json" || len(c.Accepts("html")) == 0 {
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// The client expects a JSON response
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return c.Status(fiber.StatusOK).JSON(summary)
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} else {
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// Render index
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return c.Render("views/index", summary)
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}
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}
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}
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