WIP: add attic cache, see #92

flesh out attic

TODO keys nginx-port testing

fix key

fix key

machines/dev/fedi200/default.nix

@@ -20,6 +20,7 @@
   nixos.module = {
     imports = [
       ../../../infra/common/proxmox-qemu-vm.nix
+      ../../../services/fediversity/attic
     ];
   };
 }

npins/sources.json

@@ -125,6 +125,19 @@
       "url": "https://api.github.com/repos/bigskysoftware/htmx/tarball/v2.0.4",
       "hash": "1c4zm3b7ym01ijydiss4amd14mv5fbgp1n71vqjk4alc35jlnqy2"
     },
+    "nix-templating": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "lassulus",
+        "repo": "nix-templating"
+      },
+      "branch": "master",
+      "submodules": false,
+      "revision": "437fd19b727e963560980fc4026f79400c440e39",
+      "url": "https://github.com/lassulus/nix-templating/archive/437fd19b727e963560980fc4026f79400c440e39.tar.gz",
+      "hash": "000gdd9a4w6gh9lgklsb4dzchgd0fpdkxlhgvpmw0m6ssmrxivkb"
+    },
     "nix-unit": {
       "type": "Git",
       "repository": {
@@ -150,6 +163,19 @@
       "revision": "f33a4d26226c05d501b9d4d3e5e60a3a59991921",
       "url": "https://github.com/nixos/nixpkgs/archive/f33a4d26226c05d501b9d4d3e5e60a3a59991921.tar.gz",
       "hash": "1b6dm1sn0bdpcsmxna0zzspjaixa2dald08005fry5jrbjvwafdj"
+    },
+    "vars": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "lassulus",
+        "repo": "vars"
+      },
+      "branch": "main",
+      "submodules": false,
+      "revision": "856c18f0e7b95e262ac88ba9ddebf506a16fd4a5",
+      "url": "https://github.com/lassulus/vars/archive/856c18f0e7b95e262ac88ba9ddebf506a16fd4a5.tar.gz",
+      "hash": "095dmc67pf5idj4pgnibjbgfxpkm73px3sc6hylc9j0sqh3379q7"
     }
   },
   "version": 5

services/fediversity/attic/default.nix

@@ -0,0 +1,298 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  inherit (lib) mkIf mkMerge;
+  sources = import ../../../npins;
+  inherit
+    (import "${sources.nix-templating}/lib.nix" {
+      inherit pkgs lib;
+      nix_templater = pkgs.callPackage "${sources.nix-templating}/pkgs/nix_templater" { };
+    })
+    fileContents
+    template
+    ;
+in
+{
+  imports = with sources; [
+    ./options.nix
+    "${vars}/options.nix"
+    "${vars}/backends/on-machine.nix"
+  ];
+
+  config = mkMerge [
+    (mkIf
+      (
+        config.fediversity.garage.enable
+        && config.fediversity.attic.s3AccessKeyFile != null
+        && config.fediversity.attic.s3SecretKeyFile != null
+      )
+      {
+        fediversity.garage = {
+          ensureBuckets = {
+            attic = {
+              website = true;
+              # TODO: these are too broad, after getting everything to work narrow it down to the domain we actually want
+              corsRules = {
+                enable = true;
+                allowedHeaders = [ "*" ];
+                allowedMethods = [ "GET" ];
+                allowedOrigins = [ "*" ];
+              };
+            };
+          };
+          ensureKeys = {
+            attic = {
+              inherit (config.fediversity.attic) s3AccessKeyFile s3SecretKeyFile;
+              ensureAccess = {
+                peertube-videos = {
+                  read = true;
+                  write = true;
+                  owner = true;
+                };
+                peertube-playlists = {
+                  read = true;
+                  write = true;
+                  owner = true;
+                };
+              };
+            };
+          };
+        };
+      }
+    )
+    (mkIf config.fediversity.attic.enable {
+
+      services.postgresql = {
+        enable = true;
+        authentication = lib.mkForce ''
+          local all all trust
+        '';
+        ensureDatabases = [
+          "atticd"
+        ];
+        ensureUsers = [
+          {
+            name = "atticd";
+            ensureDBOwnership = true;
+          }
+        ];
+      };
+
+      # open up access to the mastodon web interface. 80 is necessary if only for ACME
+      networking.firewall.allowedTCPPorts = [
+        80
+        443
+        8080
+      ];
+
+      vars.generators.attic = {
+        runtimeInputs = [ pkgs.openssl ];
+        files.token.secret = true;
+        script = ''
+          genrsa -traditional 4096 | base64 -w0 > $out/token
+        '';
+      };
+
+      services.atticd = {
+        enable = true;
+        # one `monolithic` and any number of `api-server` nodes
+        mode = "monolithic";
+
+        environmentFile = "${
+          template {
+            name = "attic.env";
+            outPath = "./attic.env";
+            text = ''
+              ATTIC_SERVER_TOKEN_RS256_SECRET_BASE64=${fileContents config.vars.generators.attic.files.token.path}
+              AWS_ACCESS_KEY_ID=$(cat ${config.fediversity.peertube.s3AccessKeyFile})
+              AWS_SECRET_ACCESS_KEY=$(cat ${config.fediversity.peertube.s3SecretKeyFile})
+            '';
+          }
+        }/bin/attic.env";
+
+        # https://github.com/zhaofengli/attic/blob/main/server/src/config-template.toml
+        settings = {
+          # Socket address to listen on
+          # listen = "[::]:8080";
+          listen = "0.0.0.0:8080";
+          # listen = "127.0.0.1:8080";
+
+          # Allowed `Host` headers
+          #
+          # This _must_ be configured for production use. If unconfigured or the
+          # list is empty, all `Host` headers are allowed.
+          allowed-hosts = [ ];
+
+          # The canonical API endpoint of this server
+          #
+          # This is the endpoint exposed to clients in `cache-config` responses.
+          #
+          # This _must_ be configured for production use. If not configured, the
+          # API endpoint is synthesized from the client's `Host` header which may
+          # be insecure.
+          #
+          # The API endpoint _must_ end with a slash (e.g., `https://domain.tld/attic/`
+          # not `https://domain.tld/attic`).
+          api-endpoint = "https://${config.fediversity.attic.domain}/";
+
+          # Whether to soft-delete caches
+          #
+          # If this is enabled, caches are soft-deleted instead of actually
+          # removed from the database. Note that soft-deleted caches cannot
+          # have their names reused as long as the original database records
+          # are there.
+          #soft-delete-caches = false;
+
+          # Whether to require fully uploading a NAR if it exists in the global cache.
+          #
+          # If set to false, simply knowing the NAR hash is enough for
+          # an uploader to gain access to an existing NAR in the global
+          # cache.
+          #require-proof-of-possession = true;
+
+          # Database connection
+          database = {
+            # Connection URL
+            #
+            # For production use it's recommended to use PostgreSQL.
+            # url = "postgresql:///atticd:password@127.0.0.1:5432/atticd";
+            url = "postgresql:///atticd?host=/run/postgresql";
+
+            # Whether to enable sending on periodic heartbeat queries
+            #
+            # If enabled, a heartbeat query will be sent every minute
+            #heartbeat = false;
+          };
+
+          # File storage configuration
+          storage = {
+            # Storage type
+            #
+            # Can be "local" or "s3".
+            type = "s3";
+
+            # ## Local storage
+
+            # The directory to store all files under
+            # path = "%storage_path%";
+
+            # ## S3 Storage (set type to "s3" and uncomment below)
+
+            # The AWS region
+            region = "garage";
+
+            # The name of the bucket
+            bucket = "attic";
+
+            # Custom S3 endpoint
+            #
+            # Set this if you are using an S3-compatible object storage (e.g., Minio).
+            endpoint = config.fediversity.garage.api.url;
+
+            # Credentials
+            #
+            # If unset, the credentials are read from the `AWS_ACCESS_KEY_ID` and
+            # `AWS_SECRET_ACCESS_KEY` environment variables.
+            # storage.credentials = {
+            #   access_key_id = "";
+            #   secret_access_key = "";
+            # };
+          };
+
+          # Data chunking
+          #
+          # Warning: If you change any of the values here, it will be
+          # difficult to reuse existing chunks for newly-uploaded NARs
+          # since the cutpoints will be different. As a result, the
+          # deduplication ratio will suffer for a while after the change.
+          chunking = {
+            # The minimum NAR size to trigger chunking
+            #
+            # If 0, chunking is disabled entirely for newly-uploaded NARs.
+            # If 1, all NARs are chunked.
+            nar-size-threshold = 65536; # chunk files that are 64 KiB or larger
+
+            # The preferred minimum size of a chunk, in bytes
+            min-size = 16384; # 16 KiB
+
+            # The preferred average size of a chunk, in bytes
+            avg-size = 65536; # 64 KiB
+
+            # The preferred maximum size of a chunk, in bytes
+            max-size = 262144; # 256 KiB
+          };
+
+          # Compression
+          compression = {
+            # Compression type
+            #
+            # Can be "none", "brotli", "zstd", or "xz"
+            type = "zstd";
+
+            # Compression level
+            #level = 8;
+          };
+
+          # Garbage collection
+          garbage-collection = {
+            # The frequency to run garbage collection at
+            #
+            # By default it's 12 hours. You can use natural language
+            # to specify the interval, like "1 day".
+            #
+            # If zero, automatic garbage collection is disabled, but
+            # it can still be run manually with `atticd --mode garbage-collector-once`.
+            interval = "12 hours";
+
+            # Default retention period
+            #
+            # Zero (default) means time-based garbage-collection is
+            # disabled by default. You can enable it on a per-cache basis.
+            #default-retention-period = "6 months";
+          };
+
+          jwt = {
+            # WARNING: Changing _anything_ in this section will break any existing
+            # tokens. If you need to regenerate them, ensure that you use the the
+            # correct secret and include the `iss` and `aud` claims.
+
+            # JWT `iss` claim
+            #
+            # Set this to the JWT issuer that you want to validate.
+            # If this is set, all received JWTs will validate that the `iss` claim
+            # matches this value.
+            #token-bound-issuer = "some-issuer";
+
+            # JWT `aud` claim
+            #
+            # Set this to the JWT audience(s) that you want to validate.
+            # If this is set, all received JWTs will validate that the `aud` claim
+            # contains at least one of these values.
+            #token-bound-audiences = ["some-audience1", "some-audience2"];
+          };
+
+          # jwt.signing = {
+          #   # JWT RS256 secret key
+          #   #
+          #   # Set this to the base64-encoded private half of an RSA PEM PKCS1 key.
+          #   # TODO
+          #   # You can also set it via the `ATTIC_SERVER_TOKEN_RS256_SECRET_BASE64`
+          #   # environment variable.
+          #   token-rs256-secret-base64 = "%token_rs256_secret_base64%";
+
+          #   # JWT HS256 secret key
+          #   #
+          #   # Set this to the base64-encoded HMAC secret key.
+          #   # You can also set it via the `ATTIC_SERVER_TOKEN_HS256_SECRET_BASE64`
+          #   # environment variable.
+          #   #token-hs256-secret-base64 = "";
+          # };
+        };
+      };
+    })
+  ];
+}

services/fediversity/attic/options.nix

@@ -0,0 +1,14 @@
+{ config, lib, ... }:
+
+{
+  options.fediversity.attic =
+    (import ../sharedOptions.nix {
+      inherit config lib;
+      serviceName = "attic";
+      serviceDocName = "Attic Nix Cache server";
+    })
+    //
+
+    {
+    };
+}