.NET builds restore from nuget.org directly because artifactapi has no NuGet remote type.
- add `nuget` package type proxying a NuGet v3 feed; `index.json` maps to the upstream service index
- add a `ServeRewriter` provider hook so cached JSON has upstream-origin URLs pointed back at the requesting host per request
- treat `.nupkg`/`.nuspec` as immutable and service, registration and flat container indexes as mutable
- add a `nuget.config` usage snippet to the UI and a nuget e2e caching case
Reviewed-on: #141
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
- add ansible package type proxying the Galaxy v3 API
- rewrite href/links/download_url back to the remote so tarballs flow through it
- forward the query string for providers that opt in, keeping Galaxy pagination working
- add a UI usage snippet and an ansible e2e caching case
Remote and virtual configuration writes are unauthenticated, so anything that can reach the API can repoint or delete repos. Vault identity OIDC tokens give callers a verifiable identity.
- add `ARTIFACTAPI_OIDC_ISSUER`/`ARTIFACTAPI_OIDC_AUDIENCE`; unset issuer keeps auth off
- require a JWKS-verified bearer token on POST/PUT/DELETE of `/api/v2/remotes` and `/api/v2/virtuals`, 401 otherwise
- leave uploads, object deletes, probe, reads and `/v2` open
- discover the issuer lazily with a 10s client timeout; fail fast with 503 for 15s after a failed discovery
- log the verified `sub`; allow `Authorization` in CORS
Reviewed-on: #136
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
Rust crate builds (rpmbuilder CI) fetch from crates.io directly because artifactapi has no Cargo remote type.
- add `cargo` package type proxying the sparse registry protocol (RFC 2789)
- synthesize `config.json` so `dl` points crate downloads back at the remote
- treat index files as mutable and `crates/*/*.crate` as immutable, fetched from static.crates.io for crates.io
- add a `~/.cargo/config.toml` usage snippet to the UI and a cargo e2e caching case
Reviewed-on: #132
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
Evicting a remote object only deleted its Postgres row. The S3 index and the Redis TTL/ETag keys survived, so stale mirror metadata such as EPEL repodata kept being served.
- evict the artifact row, S3 index and Redis keys via `Engine.Evict`
- evict a directory with `<dir>/*`; other wildcards return 400, unknown remotes 404
- wait on the per-path fetch lock for single-path evicts; return 503 on timeout or a Redis error
- wildcard evicts take no lock; a fetch already in flight may re-cache its path
- return S3 list errors from `DeletePrefix` instead of deleting nothing
Reviewed-on: #128
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
## Why
Switching a remote's backend (`base_url`) left artifactapi serving the previously-cached mutable metadata (repodata / Release / APKINDEX) until TTL expiry, so requests could keep pointing at the old upstream. `cache.FlushRemote` already existed but was wired to nothing.
## How
- Inject a `MetadataFlusher` (satisfied by `*cache.Redis`) into `RemotesHandler` via `NewRemotesHandler`; `server.go` passes `s.cache`.
- On update, read the existing remote first, then after a successful DB update flush the remote's cached metadata when `base_url` changed, so the next request re-fetches fresh from the new upstream.
- Keep scope to `base_url` (upstream identity); a flush failure is logged as a warning and does not fail the request since the DB update already landed.
- Add tests: a `base_url` change flushes exactly once, an unchanged `base_url` does not flush, and a flush error still returns 200.
Reviewed-on: #120
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
## Why
`github_alpine` is the Alpine/apk analog of the existing `github_deb`/`github_rpm` metadata-only remotes. It lets a plain GitHub-releases repo of `.apk` files be consumed as a real apk repository without artifactapi ever precaching the packages: it scans the repo's releases, derives each package's `.PKGINFO` from a ranged prefix fetch, synthesizes a per-arch `APKINDEX.tar.gz` from the cached metadata, and redirects the actual `.apk` downloads to a backend `releases_remote`. It stacks on the apk-local branch, reusing that work's alpine APKINDEX generator, `.apk`/`.PKGINFO` parser, Q1 pull-checksum, and `AlpineMetadata` store.
## How
- **`pkg/models`**: add `PackageGitHubAlpine` to the enum + validators (and test).
- **`internal/provider/alpine/github.go`**: the `github_alpine` provider. `ServeRemote` serves per-arch `<arch>/APKINDEX.tar.gz` (reusing `generateAPKIndex` over arch-filtered `AlpineMetadata` rows, `normalizeIndexPath` for apk's `./` dot-segment), 302-redirects `*.apk` to `{proxyBaseURL}/api/v1/remote/{releases_remote}/{path}`, and cold-starts with a 503 + `Retry-After`. `scanWithState` lists releases with ETag/If-None-Match and incrementally derives/prunes. `deriveAsset` does a **ranged GET of just the front of the `.apk`** — the control gzip stream carrying `.PKGINFO` sits near the front — doubling the range on truncation; it parses `.PKGINFO` and computes the `C:` Q1 checksum (`Q1`+base64(sha1(control stream))). `FilePath` = the github-relative asset path so the redirect resolves.
- **`internal/provider/alpine/syncer.go`**: a parallel background `Syncer` (own worker pool, shared rate limiter, deduped queue, DB lease), separate from the deb/rpm syncers.
- **`internal/database/alpine_github_sync.go`** + `github_alpine_sync_state` table: `ListGitHubAlpineRemotes` + Claim/Release per-remote sync lease, kept separate from the deb/rpm tables.
- **`internal/server/server.go`**: construct + `Run` the alpine syncer alongside deb/rpm and register it in the `PackageType→Primer` map (priming on create then flows through the existing generic `remotes.go` path).
The rpm/deb providers, syncers, and tables are untouched — this adds parallel alpine equivalents and reuses shared helpers already present in the alpine package.
## Tests
Mirror the deb github tests: scan derives `.PKGINFO`/Q1 from a ranged prefix of a `testsupport.MinimalApk` served over an httptest range server (no full download); diff/prune; pattern filter; per-arch `ServeRemote` routing (index served per-arch and grouped, dot-segment collapse, `.apk` → 302, cold-start 503, warm 200, canceled-request-serves-cache); DB lease prevents a second replica; prime bypasses the recency window. `go build`/`go vet`/`go mod tidy` clean, `make test` (-race) green, pre-commit green.
Reviewed-on: #115
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
## Why
This stacks the Debian/apt analog of `github_rpm` on top of the deb local+remote work (#111). It lets a GitHub repo's `.deb` release assets be consumed as a real apt repository without artifactapi ever precaching whole packages: it derives per-asset control metadata from a ranged prefix fetch, synthesizes a flat apt repo from the cache, and redirects the actual `.deb` downloads to a backend `releases_remote` (the generic github.com remote).
Base is `benvin/deb-local-remote` (stacked) to keep the diff atomic.
## How
- Adds `github_deb` to the package-type enum and validity map.
- Adds the `github_deb` provider mirroring `github_rpm`: `ServeRemote` serves `Packages`/`Packages.gz`/`Release`, returns 404 for `InRelease`/`Release.gpg` (unsigned, consumed via `[trusted=yes]`), and 302-redirects `*.deb` to `{proxyBaseURL}/api/v1/remote/{releases_remote}/{path}`; cold-start prime with a retryable 503.
- `deriveAsset` ranged-GETs the front of the `.deb` (an `ar` archive), locates and fully reads `control.tar.*`, and parses the control paragraph — doubling the range if the control member is truncated. The Packages `SHA256` comes from the GitHub asset `digest` when present, else a one-time full stream; `MD5sum` is left unset (apt verifies against SHA256 under `[trusted=yes]`).
- Adds a `github_deb` background Syncer (own worker pool, shared rate limiter, deduped queue) with per-remote DB-lease-gated scans so only one replica scans per window.
- Adds the `github_deb_sync_state` table plus `ListGitHubDebRemotes` / `ClaimGitHubDebSyncLease` / `ReleaseGitHubDebSyncLease` DB helpers, kept separate from the rpm ones.
- Primes `github_deb` remotes on create and runs the deb syncer alongside the rpm one; prime-on-create is routed by package type.
- Reuses the deb apt-index generators and control parser; the Packages generator now skips empty hash lines so a SHA256-only entry is valid.
## Notes / deviations
- **Filename convention:** the `Filename` stored in the Packages index is the **github-relative** asset path (same as rpm's `assetPath`), not `pool/<asset>`. This is required for the `.deb` 302 to `{releases_remote=github}/{path}` to resolve against github.com; it still matches the `*.deb` redirect rule.
- **GitHub client helpers** (releases pagination, ranged GET, auth headers) are duplicated into the deb package rather than shared, because the rpm equivalents are unexported in `package rpm` and the task requires not modifying the rpm provider.
- `go build`, `go vet`, `go mod tidy`, and `make test` (`-race`, incl. the Postgres lease integration tests) all pass; pre-commit clean.
Do not merge — for review.
---------
Co-authored-by: unkin-agent <unkin-agent@git.unkin.net>
Reviewed-on: #112
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
Brings Debian/apt to artifactapi with feature parity to the existing rpm support (local + remote), so `.deb` packages can be hosted as a flat apt repo and a Debian/Ubuntu mirror can be cached through the proxy.
- Adds `deb` to the package-type enum and registers a new `internal/provider/deb` provider.
- Classifies `.deb` blobs immutable and the apt index surface (`Packages`, `Release`, `InRelease`, `dists/`, by-hash) mutable so the caching engine revalidates it.
- Parses the `.deb` in pure Go (ar archive to `control.tar.{gz,xz,zst}` to `./control`), storing the raw control stanza plus computed size/md5/sha256 as `deb_metadata`.
- Serves a flat apt repo (`deb [trusted=yes] .../ ./`): generates `Packages`, `Packages.gz` and an unsigned `Release` (returns 404 for `InRelease`/`Release.gpg`), mirroring rpm unsigned repodata / gpgcheck=0 trust model.
- Proxies a remote mirror via `UpstreamURL`/`ContentType`/`AuthHeaders` (HTTP Basic).
- Adds the `deb_metadata` table to `migrate()`, DB access methods, a `MinimalDeb` pure-Go fixture, unit tests, and a `dockere2e` `TestLocalDebRepo`.
---------
Co-authored-by: unkin-agent <unkin-agent@git.unkin.net>
Reviewed-on: #111
Co-authored-by: Unkin Agent <unkin-agent@unkin.net>
Co-committed-by: Unkin Agent <unkin-agent@unkin.net>
## Why
Anonymous GitHub is capped at 60 requests/hour and cannot read private repositories. A machine credential usable by a free (non-enterprise) account is needed to lift the request budget to ~5000/hr and to read private-repo release assets.
Builds on the background syncer (#108, now merged to `master`); this diff is the auth changes only.
## How
- Add `internal/githubauth`: a process-wide GitHub credential delivered via env/secret, applied by default to every outbound GitHub request (releases scan, ranged asset-header GETs, and the generic-github byte proxy for private assets).
- Support two modes:
- **PAT** — `GITHUB_TOKEN` sent as `Authorization: Bearer <token>`.
- **GitHub App** — `GITHUB_APP_ID` + `GITHUB_APP_INSTALLATION_ID` + private key (`GITHUB_APP_PRIVATE_KEY` inline PEM or `GITHUB_APP_PRIVATE_KEY_PATH`). Mint a short-lived RS256 JWT with stdlib `crypto/rsa` (no new dependency), exchange it at `POST /app/installations/{id}/access_tokens` for a ~1h installation token, cache it, and single-flight a refresh a few minutes before expiry.
- Inject at the two GitHub call paths: the rpm github provider header builder (releases + ranged fetches) and the generic provider `AuthHeaders` (byte proxy, github.com hosts only; the pre-signed `objects.githubusercontent.com` redirect deliberately gets no Authorization).
- Honor precedence: a remote's own `username`/`password` overrides the server credential; no credential configured stays anonymous (current behavior).
- Fail closed at startup on partial App configuration (e.g. App id without a private key); a token-and-App conflict is also rejected.
- Never persist the credential to the DB, return it from an API, or log it (token-exchange failures never echo the response body).
- Read config via the existing `getenv` convention; document PAT vs App setup, the free-account fine-grained PAT scopes (Contents:read + Metadata:read), precedence, and the rate-limit implication.
## Rate limit
Authenticated requests share the syncer's single global limiter — no second limiter is added. A token raises the effective GitHub ceiling (~5000/hr vs ~60/hr), so the limiter defaults stay safe.
## Tests
`internal/githubauth` and `internal/provider/{rpm,generic}`:
- PAT attaches the correct `Authorization` header to releases + asset-header requests.
- App mints a valid RS256 JWT (verified against the app public key), exchanges it at a mocked endpoint, reuses the cached token without re-exchanging, refreshes near expiry, and single-flights concurrent callers.
- Per-remote credential overrides the server credential (rpm + generic).
- No credential → no `Authorization` header, requests still succeed anonymously.
- ETag/304 flow still works with auth attached.
- The credential does not appear in a remote's serialized JSON.
- Config validation: no-config is anonymous; partial App config and token/App conflict both error.
Verified fail-before/pass-after for the injection tests. `gofmt -l`, `go build ./...`, `go vet ./...`, `go test ./...` all clean (26 packages).
Reviewed-on: #109
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Why
Builds on #107 (merged), which derives `github_rpm` RPM metadata lazily on the
client request path, single-flighted per replica. Two problems remain: the
derive still happens per replica, so across a multi-replica deployment the same
releases are scanned and re-derived N times, multiplying GitHub queries; and a
cold cache blocks the first request on a full derive. GitHub's rate limits are
low (~60/hr unauthenticated, ~5000/hr authenticated), so this needs a single
coordinated syncer with a shared rate limit and conditional requests.
## How
- Add a single per-process background syncer (started at boot, cleanly stopped
on shutdown) that owns a deduped/coalescing work queue, a worker pool, and one
global token-bucket rate limiter (`golang.org/x/time/rate`) bound onto the
github provider so every GitHub call (releases list + each ranged asset GET)
acquires a token first.
- Re-check each `github_rpm` remote for new/changed releases on its existing
`mutable_ttl` cadence; derive only new/changed assets incrementally and prune
assets that disappear upstream. Repodata is served from primed DB rows.
- Prime metadata in the background on remote creation; the create call returns
immediately.
- Send the stored releases-list `ETag` as `If-None-Match`; a `304` derives
nothing and is not counted against GitHub's rate limit, so an unchanged repo
is nearly free.
- Coordinate replicas through a `github_rpm_sync_state` row (`last_synced_at`,
`etag`, `sync_lease_owner`, `sync_lease_expires`): a periodic scan runs only
for the replica that atomically claims the lease, bounding total GitHub load
to ~once per `mutable_ttl` regardless of replica count; the ETag is shared
through the same row.
- Keep the request path fast: serve current cache, enqueue a prime on an empty
cache, and return a bounded wait then a retryable `503` rather than blocking
on a cold derive.
- Add `GITHUB_SYNC_RATE` / `GITHUB_SYNC_BURST` / `GITHUB_SYNC_WORKERS` /
`GITHUB_SYNC_POLL_INTERVAL` config with conservative defaults (1 req/s, burst
5, 3 workers, 60s tick) and document the syncer in the README.
## Tests
- Unit (httptest, Range/ETag-aware fixture): `304` releases response derives
nothing; incremental derive fetches only the newly added asset; the shared
limiter caps request rate; work-queue enqueues coalesce to one job; prime
enqueues a job; a held lease stops a second replica from scanning; cold-start
serves `503` while warm cache serves `200`.
- DB integration (testcontainers postgres): the real lease SQL — one holder at a
time, recency gate blocks a too-soon periodic re-claim, prime (freshness 0)
bypasses recency but respects a live lease.
- Docker e2e re-run: `dnf install dotvault` works; prime-on-create derives in the
background at ~1 req/s (global limiter); `dnf makecache` served fast from the
priming cache (no cold block); clean shutdown mid-scan, no panics.
## Notes
- Reuses `mutable_ttl` as the check interval (no new per-remote field), per brief.
Reviewed-on: #108
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Why
Local terraform repos already served the Terraform **network mirror** protocol, but consuming that requires every user to add a `provider_installation { network_mirror }` block to `~/.terraformrc`. A `source = "artifactapi.k8s.../ns/type"` address instead triggers the **provider registry** protocol (service discovery at `/.well-known/terraform.json` + GPG-signed SHA256SUMS), which returned 404 — hence *"does not offer a provider registry."*
Local repos are meant to be the real thing, so this makes a terraform local repo a first-class provider registry: `terraform init` installs from a bare source address with no client config.
## What
- Serve `/.well-known/terraform.json` service discovery and the `providers.v1` endpoints under `/terraform/v1/providers`: `versions`, `download/{os}/{arch}`, `sha256sums`, `sha256sums.sig`.
- Map the Terraform **namespace** segment to the artifactapi **repo name**; locate the provider by **type**. `download_url` points back at the existing `/api/v1/local/...` path.
- Generate `SHA256SUMS` per version and sign it with a GPG key loaded from `TF_SIGNING_KEY_PATH` (optional `TF_SIGNING_KEY_PASSPHRASE`); advertise the public key + key id in the download response. **No key → registry stays disabled (endpoints 404)**, so behaviour is unchanged until the signing secret is present.
- New `internal/tfsign` (key load + detached signing, via `x/crypto/openpgp`) and `internal/api/terraform` (registry handler). Export `ParseProviderZip` for reuse.
- `TF_PROVIDER_PROTOCOLS` (default `5.0,6.0`) sets the advertised plugin protocols.
- README section documenting usage.
## Consumer
```hcl
terraform {
required_providers {
artifactapi = {
source = "artifactapi.k8s.syd1.au.unkin.net/terraform-unkin/artifactapi"
version = "0.1.2"
}
}
}
```
## Tests
- `internal/tfsign`: sign + verify round-trip, disabled/missing-key paths.
- `internal/api/terraform`: dockerised full flow (discovery → versions → download → sha256sums → sig), verifying the signature against the advertised public key.
## Follow-ups (separate PRs)
- **argocd-apps**: mount the signing K8s secret into the api deployment + set `TF_SIGNING_KEY_PATH`. The `/` HTTPRoute already routes `/.well-known` and `/terraform` to the API, so no gateway change is needed.
- Image/version bump once tagged.
## Note
Anchored the `terraform/` gitignore to the repo root (`/terraform/`) so it stops matching `internal/*/terraform/`. This surfaced `internal/provider/terraform/terraform_extra_test.go`, which had been silently untracked — now committed.
Reviewed-on: #102
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Why
The web UI ships as a separate image served under \`/ui\` (built with \`BASE_PATH=/ui\`). Hitting the bare domain (e.g. \`https://artifactapi.k8s.syd1.au.unkin.net/\`) returned the API's JSON identity blob instead of the app, so browsers never landed on the UI.
## Changes
- Redirect \`GET /\` to \`/ui/\` (302 Found).
- Preserve the former root JSON (\`{"name","version"}\`) at \`/version\`, so health/monitoring can still read the running version.
- Update the server integration test to assert the redirect and the \`/version\` payload.
Reviewed-on: #101
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Why
Local repos store uploaded files in the \`local_files\` table, whereas remote/proxy repos cache into the \`artifacts\` table. The shared **Cached Objects** page always queried the artifacts table via \`/api/v2/remotes/{name}/objects\`, so files uploaded to a local repo (e.g. an internal RPM) were fully stored and servable but showed as **0 objects** in the UI.
## Changes
- Add \`ListLocalArtifacts\`, joining \`local_files\` with \`blobs\` and returning \`models.Artifact\`-shaped rows (size from the blob; access/fetch counters zero and timestamps derived from \`created_at\`, since local files track no access).
- Add \`LocalRoutes\` to the objects handler: \`listLocal\` reads \`local_files\`, \`evictLocal\` deletes via \`DeleteLocalFile\`. Extract shared page/per_page parsing into \`pageBounds\`.
- Mount \`/api/v2/locals/{name}/objects\` (GET + DELETE) in the server.
- Add \`listLocalObjects\`/\`evictLocalObject\` to the UI client and route the Objects page to them when viewing a local repo.
- Cover the listing and eviction paths with a dockerised test.
## Notes
Generated \`repodata/*\` files are not listed — they are produced on the fly from \`rpm_metadata\` and never stored in \`local_files\`, which matches how the repo serves them.
Reviewed-on: #99
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
The / endpoint was hardcoded to return 3.0.0-dev. Now uses the git tag version set via ldflags at build time.
Reviewed-on: #63
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
The v3 Go rewrite removed the /v2/ Docker Registry compatibility endpoint. Docker clients need:
- GET/HEAD /v2/ → 200 (registry ping)
- GET/HEAD /v2/{remoteName}/* → proxy to the docker remote
Usage: `docker pull artifactapi.example.com/{remoteName}/image:tag`
Reviewed-on: #57
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Summary
Move package-type-specific local repo logic out of centralized handlers into provider packages via optional Go interfaces.
**New interfaces in `provider` package:**
- \`LocalUploader\`: \`ValidateUpload(filePath) → (storagePath, contentType, error)\` + \`UploadResponse(...)\`
- \`LocalIndexer\`: \`ServeLocalIndex(w, r, files, repoName, path) → bool\` + \`GenerateLocalIndex(ctx, files, repoName, path) → ([]byte, error)\`
- \`FileStore\`: \`ListFilesByPrefix\` + \`ListPackages\` (implemented by database.DB)
**Providers implement these interfaces:**
- PyPI: upload validation (wheel/sdist naming), simple index serving + generation
- Terraform: upload validation (provider zip naming), mirror protocol serving
**Handlers simplified to generic dispatch:**
- \`local.go\`: type-asserts to \`LocalUploader\`, falls back to generic upload
- \`proxy.go\`: type-asserts to \`LocalIndexer\`, falls back to raw file serving
- \`engine.go\`: type-asserts to \`LocalIndexer\` for local virtual members
Adding a new local repo type (e.g. RPM) = implement the interfaces in its provider package. Zero handler changes.
## Test plan
- [x] Build + unit tests pass
- [x] E2E: PyPI local upload → simple index → uv pip install (smoke test after refactor)
Reviewed-on: #52
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
## Summary
- Virtual engine detects local members and generates indexes in-memory
- MemberIndex.RepoType drives correct URL prefix in merged output
- PyPI merger rewrites links to /api/v1/local/ or /api/v1/remote/ appropriately
- Includes local PyPI support (cherry-picked from #50)
## Test plan
- [x] Upload wheel to local PyPI → install from direct local URL
- [x] Create virtual with local + remote → install from virtual URL
- [x] Both paths produce correct absolute download URLs
Reviewed-on: #51
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
Introduces repo_type (remote/local) as a separate axis from package_type
so that any package type can be hosted locally. A terraform local repo
is package_type=terraform + repo_type=local.
- Remote model gains RepoType field (defaults to "remote")
- Database schema adds repo_type column with migration for existing DBs
- V1 proxy adds /api/v1/local/{name}/* route for serving local files
- V2 upload via PUT /api/v2/remotes/{name}/files/{ns}/{type}/{file}.zip
validates filename matches terraform-provider-{type}_{ver}_{os}_{arch}.zip
and returns 409 on duplicate (no overwrites)
- index.json and {version}.json are computed on-the-fly from uploaded zips
rather than stored as separate files
- V2 create validates repo_type and requires base_url only for remotes
---------
Co-authored-by: Ben Vincent <ben@unkin.net>
Reviewed-on: #49