From 94cd725a825705ad58fa406c2aad6fa37c6e2630 Mon Sep 17 00:00:00 2001
From: technofab <coder@technofab.de>
Date: Sat, 9 Mar 2024 14:26:09 +0000
Subject: [PATCH] feat: add some nixlets

---
 flake.nix                                   |   3 +
 nixlets/attic/configMap.nix                 |   9 +
 nixlets/attic/default.nix                   |   7 +
 nixlets/attic/deployment.nix                |  42 +++++
 nixlets/attic/service.nix                   |  16 ++
 nixlets/attic/values.nix                    | 177 ++++++++++++++++++++
 nixlets/mosquitto/configMap.nix             |   9 +
 nixlets/mosquitto/default.nix               |   8 +
 nixlets/mosquitto/persistentVolumeClaim.nix |   8 +
 nixlets/mosquitto/service.nix               |  17 ++
 nixlets/mosquitto/statefulSet.nix           |  40 +++++
 nixlets/mosquitto/values.nix                |  64 +++++++
 nixlets/postgres/default.nix                |   7 +
 nixlets/postgres/persistentVolumeClaim.nix  |   8 +
 nixlets/postgres/service.nix                |  17 ++
 nixlets/postgres/statefulSet.nix            |  26 +++
 nixlets/postgres/values.nix                 |  50 ++++++
 17 files changed, 508 insertions(+)
 create mode 100644 nixlets/attic/configMap.nix
 create mode 100644 nixlets/attic/default.nix
 create mode 100644 nixlets/attic/deployment.nix
 create mode 100644 nixlets/attic/service.nix
 create mode 100644 nixlets/attic/values.nix
 create mode 100644 nixlets/mosquitto/configMap.nix
 create mode 100644 nixlets/mosquitto/default.nix
 create mode 100644 nixlets/mosquitto/persistentVolumeClaim.nix
 create mode 100644 nixlets/mosquitto/service.nix
 create mode 100644 nixlets/mosquitto/statefulSet.nix
 create mode 100644 nixlets/mosquitto/values.nix
 create mode 100644 nixlets/postgres/default.nix
 create mode 100644 nixlets/postgres/persistentVolumeClaim.nix
 create mode 100644 nixlets/postgres/service.nix
 create mode 100644 nixlets/postgres/statefulSet.nix
 create mode 100644 nixlets/postgres/values.nix

diff --git a/flake.nix b/flake.nix
index 2019f6b..db239fd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,6 +20,9 @@
         # █░▀█ █ █░█ █▄▄ ██▄ ░█░ ▄█
         nixlets = {
           # <name> = utils.mkNixlet ./nixlets/<name>;
+          mosquitto = utils.mkNixlet ./nixlets/mosquitto;
+          attic = utils.mkNixlet ./nixlets/attic;
+          postgres = utils.mkNixlet ./nixlets/postgres;
         };
       };
       perSystem = {
diff --git a/nixlets/attic/configMap.nix b/nixlets/attic/configMap.nix
new file mode 100644
index 0000000..d8c5c6d
--- /dev/null
+++ b/nixlets/attic/configMap.nix
@@ -0,0 +1,9 @@
+{values, ...}: {
+  kubernetes.resources = {
+    configMaps."${values.uniqueName}-config" = {
+      data = {
+        "config.toml" = values.configToml;
+      };
+    };
+  };
+}
diff --git a/nixlets/attic/default.nix b/nixlets/attic/default.nix
new file mode 100644
index 0000000..0a00ffe
--- /dev/null
+++ b/nixlets/attic/default.nix
@@ -0,0 +1,7 @@
+{...}: {
+  imports = [
+    ./deployment.nix
+    ./configMap.nix
+    ./service.nix
+  ];
+}
diff --git a/nixlets/attic/deployment.nix b/nixlets/attic/deployment.nix
new file mode 100644
index 0000000..5ed270d
--- /dev/null
+++ b/nixlets/attic/deployment.nix
@@ -0,0 +1,42 @@
+{values, ...}: {
+  kubernetes.resources = {
+    deployments."${values.uniqueName}" = {
+      spec = {
+        replicas = values.replicaCount;
+        selector.matchLabels.app = "${values.uniqueName}";
+        template = {
+          metadata.labels.app = "${values.uniqueName}";
+          spec = {
+            securityContext.fsGroup = 1000;
+            containers."api-server" = {
+              image = "${values.image.repository}:${values.image.tag}";
+              imagePullPolicy = values.image.pullPolicy;
+              command = ["atticd" "-f" "/etc/attic/config.toml" "--mode" "monolithic"]; # TODO: only api-server can be replicated
+              envFrom = [
+                {secretRef.name = "${values.uniqueName}-env";}
+              ];
+              volumeMounts = {
+                "config" = {
+                  name = "config";
+                  mountPath = "/etc/attic";
+                  readOnly = true;
+                };
+              };
+            };
+            volumes = {
+              "config".configMap = {
+                name = "${values.uniqueName}-config";
+                items = [
+                  {
+                    key = "config.toml";
+                    path = "config.toml";
+                  }
+                ];
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}
diff --git a/nixlets/attic/service.nix b/nixlets/attic/service.nix
new file mode 100644
index 0000000..8bd5366
--- /dev/null
+++ b/nixlets/attic/service.nix
@@ -0,0 +1,16 @@
+{values, ...}: {
+  kubernetes.resources = {
+    services."${values.uniqueName}" = {
+      spec = {
+        selector.app = "${values.uniqueName}";
+        ports = [
+          {
+            name = "http";
+            port = 8080;
+          }
+        ];
+        type = values.service.type;
+      };
+    };
+  };
+}
diff --git a/nixlets/attic/values.nix b/nixlets/attic/values.nix
new file mode 100644
index 0000000..c425878
--- /dev/null
+++ b/nixlets/attic/values.nix
@@ -0,0 +1,177 @@
+{
+  lib,
+  utils,
+  project,
+  ...
+}:
+with lib; {
+  # for some basic values see https://github.com/helm/examples/blob/4888ba8fb8180dd0c36d1e84c1fcafc6efd81532/charts/hello-world/values.yaml
+  options = {
+    replicaCount = mkOption {
+      type = types.int;
+      default = 1;
+    };
+    image = utils.mkNestedOption {
+      repository = mkOption {
+        type = types.str;
+        default = "ghcr.io/zhaofengli/attic";
+      };
+      pullPolicy = mkOption {
+        type = types.str;
+        default = "IfNotPresent";
+      };
+      tag = mkOption {
+        type = types.str;
+        default = "latest";
+      };
+    };
+    configToml = mkOption {
+      type = types.str;
+      default = ''
+        # Socket address to listen on
+        listen = "[::]: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://your.domain.tld/"
+
+        # 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
+
+        # JWT signing token
+        #
+        # Set this to the Base64 encoding of some random data.
+        # You can also set it via the `ATTIC_SERVER_TOKEN_HS256_SECRET_BASE64` environment
+        # variable.
+        token-hs256-secret-base64 = ""
+
+        # Database connection
+        [database]
+        # Connection URL
+        #
+        # For production use it's recommended to use PostgreSQL.
+        url = "sqlite:///data/attic.db"
+
+        # 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 = "local"
+
+        # ## Local storage
+
+        # The directory to store all files under
+        path = "/data/storage"
+
+        # ## S3 Storage (set type to "s3" and uncomment below)
+
+        # The AWS region
+        #region = "us-east-1"
+
+        # The name of the bucket
+        #bucket = "some-bucket"
+
+        # Custom S3 endpoint
+        #
+        # Set this if you are using an S3-compatible object storage (e.g., Minio).
+        #endpoint = "https://xxx.r2.cloudflarestorage.com"
+
+        # 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"
+      '';
+    };
+
+    # internal
+    uniqueName = mkOption {
+      internal = true;
+      type = types.str;
+      default = "${project}-atticd";
+    };
+  };
+}
diff --git a/nixlets/mosquitto/configMap.nix b/nixlets/mosquitto/configMap.nix
new file mode 100644
index 0000000..2e8f3a0
--- /dev/null
+++ b/nixlets/mosquitto/configMap.nix
@@ -0,0 +1,9 @@
+{values, ...}: {
+  kubernetes.resources = {
+    configMaps."${values.uniqueName}-config" = {
+      data = {
+        "mosquitto.conf" = values.configContent;
+      };
+    };
+  };
+}
diff --git a/nixlets/mosquitto/default.nix b/nixlets/mosquitto/default.nix
new file mode 100644
index 0000000..60ed286
--- /dev/null
+++ b/nixlets/mosquitto/default.nix
@@ -0,0 +1,8 @@
+{...}: {
+  imports = [
+    ./statefulSet.nix
+    ./service.nix
+    ./configMap.nix
+    ./persistentVolumeClaim.nix
+  ];
+}
diff --git a/nixlets/mosquitto/persistentVolumeClaim.nix b/nixlets/mosquitto/persistentVolumeClaim.nix
new file mode 100644
index 0000000..7c323c1
--- /dev/null
+++ b/nixlets/mosquitto/persistentVolumeClaim.nix
@@ -0,0 +1,8 @@
+{values, ...}: {
+  kubernetes.resources = {
+    persistentVolumeClaims."${values.uniqueName}-data".spec = {
+      accessModes = ["ReadWriteOnce"];
+      resources.requests.storage = values.storage;
+    };
+  };
+}
diff --git a/nixlets/mosquitto/service.nix b/nixlets/mosquitto/service.nix
new file mode 100644
index 0000000..611c048
--- /dev/null
+++ b/nixlets/mosquitto/service.nix
@@ -0,0 +1,17 @@
+{values, ...}: {
+  kubernetes.resources = {
+    services."${values.uniqueName}" = {
+      spec = {
+        selector.app = "${values.uniqueName}";
+        ports = [
+          {
+            name = "mqtt";
+            port = values.service.port;
+            targetPort = 1883;
+          }
+        ];
+        type = values.service.type;
+      };
+    };
+  };
+}
diff --git a/nixlets/mosquitto/statefulSet.nix b/nixlets/mosquitto/statefulSet.nix
new file mode 100644
index 0000000..defa832
--- /dev/null
+++ b/nixlets/mosquitto/statefulSet.nix
@@ -0,0 +1,40 @@
+{values, ...}: {
+  kubernetes.resources = {
+    statefulSets."${values.uniqueName}".spec = {
+      replicas = values.replicaCount;
+      selector.matchLabels.name = "${values.uniqueName}";
+      serviceName = "${values.uniqueName}";
+      template = {
+        metadata.labels.name = "${values.uniqueName}";
+        spec = {
+          containers."mosquitto" = {
+            image = "${values.image.repository}:${values.image.tag}";
+            imagePullPolicy = values.image.pullPolicy;
+            ports."mqtt".containerPort = 1883;
+            volumeMounts = {
+              "password-file" = {
+                name = "password-file";
+                mountPath = "/mosquitto/config/password_file";
+                subPath = "password_file";
+              };
+              "config" = {
+                name = "config";
+                mountPath = "/mosquitto/config/mosquitto.conf";
+                subPath = "mosquitto.conf";
+              };
+              "data" = {
+                name = "data";
+                mountPath = "/mosquitto/data";
+              };
+            };
+          };
+          volumes = {
+            "password-file".secret.secretName = "${values.uniqueName}";
+            "config".configMap.name = "${values.uniqueName}-config";
+            "data".persistentVolumeClaim.claimName = "${values.uniqueName}-data";
+          };
+        };
+      };
+    };
+  };
+}
diff --git a/nixlets/mosquitto/values.nix b/nixlets/mosquitto/values.nix
new file mode 100644
index 0000000..3b9c2e3
--- /dev/null
+++ b/nixlets/mosquitto/values.nix
@@ -0,0 +1,64 @@
+{
+  lib,
+  utils,
+  project,
+  ...
+}:
+with lib; {
+  # for some basic values see https://github.com/helm/examples/blob/4888ba8fb8180dd0c36d1e84c1fcafc6efd81532/charts/hello-world/values.yaml
+  options = {
+    replicaCount = mkOption {
+      type = types.int;
+      default = 1;
+    };
+    image = utils.mkNestedOption {
+      repository = mkOption {
+        type = types.str;
+        default = "eclipse-mosquitto";
+      };
+      tag = mkOption {
+        type = types.str;
+        default = "latest";
+      };
+      pullPolicy = mkOption {
+        type = types.str;
+        default = "IfNotPresent";
+      };
+    };
+    service = utils.mkNestedOption {
+      port = mkOption {
+        type = types.int;
+        default = 1883;
+      };
+      type = mkOption {
+        type = types.str;
+        default = "ClusterIP";
+      };
+    };
+    storage = mkOption {
+      type = types.str;
+      default = "5G";
+    };
+    passwordAuthEnabled = mkOption {
+      type = types.bool;
+      default = true;
+    };
+    configContent = mkOption {
+      type = types.str;
+      default = ''
+        listener 1883
+        persistence true
+        persistence_location /mosquitto/data
+        autosave_interval 1800
+        password_file /mosquitto/config/password_file
+      '';
+    };
+
+    # internal
+    uniqueName = mkOption {
+      internal = true;
+      type = types.str;
+      default = "${project}-mosquitto";
+    };
+  };
+}
diff --git a/nixlets/postgres/default.nix b/nixlets/postgres/default.nix
new file mode 100644
index 0000000..bf3991f
--- /dev/null
+++ b/nixlets/postgres/default.nix
@@ -0,0 +1,7 @@
+{...}: {
+  imports = [
+    ./statefulSet.nix
+    ./service.nix
+    ./persistentVolumeClaim.nix
+  ];
+}
diff --git a/nixlets/postgres/persistentVolumeClaim.nix b/nixlets/postgres/persistentVolumeClaim.nix
new file mode 100644
index 0000000..7c323c1
--- /dev/null
+++ b/nixlets/postgres/persistentVolumeClaim.nix
@@ -0,0 +1,8 @@
+{values, ...}: {
+  kubernetes.resources = {
+    persistentVolumeClaims."${values.uniqueName}-data".spec = {
+      accessModes = ["ReadWriteOnce"];
+      resources.requests.storage = values.storage;
+    };
+  };
+}
diff --git a/nixlets/postgres/service.nix b/nixlets/postgres/service.nix
new file mode 100644
index 0000000..11c011a
--- /dev/null
+++ b/nixlets/postgres/service.nix
@@ -0,0 +1,17 @@
+{values, ...}: {
+  kubernetes.resources = {
+    services."${values.uniqueName}" = {
+      spec = {
+        selector.app = "${values.uniqueName}";
+        ports = [
+          {
+            name = "tcp";
+            port = values.service.port;
+            targetPort = 5432;
+          }
+        ];
+        type = values.service.type;
+      };
+    };
+  };
+}
diff --git a/nixlets/postgres/statefulSet.nix b/nixlets/postgres/statefulSet.nix
new file mode 100644
index 0000000..76f5d71
--- /dev/null
+++ b/nixlets/postgres/statefulSet.nix
@@ -0,0 +1,26 @@
+{values, ...}: {
+  kubernetes.resources = {
+    statefulSets."${values.uniqueName}".spec = {
+      replicas = values.replicaCount;
+      selector.matchLabels.name = "${values.uniqueName}";
+      serviceName = "${values.uniqueName}";
+      template = {
+        metadata.labels.name = "${values.uniqueName}";
+        spec = {
+          containers."postgres" = {
+            image = "${values.image.repository}:${values.image.tag}";
+            imagePullPolicy = values.image.pullPolicy;
+            ports."tcp".containerPort = 5432;
+            volumeMounts."data" = {
+              name = "data";
+              mountPath = "/var/lib/postgresql/data";
+            };
+          };
+          volumes = {
+            "data".persistentVolumeClaim.claimName = "${values.uniqueName}-data";
+          };
+        };
+      };
+    };
+  };
+}
diff --git a/nixlets/postgres/values.nix b/nixlets/postgres/values.nix
new file mode 100644
index 0000000..7b3bc0f
--- /dev/null
+++ b/nixlets/postgres/values.nix
@@ -0,0 +1,50 @@
+{
+  lib,
+  utils,
+  project,
+  ...
+}:
+with lib; {
+  # for some basic values see https://github.com/helm/examples/blob/4888ba8fb8180dd0c36d1e84c1fcafc6efd81532/charts/hello-world/values.yaml
+  options = {
+    replicaCount = mkOption {
+      type = types.int;
+      default = 1;
+    };
+    image = utils.mkNestedOption {
+      repository = mkOption {
+        type = types.str;
+        default = "postgres";
+      };
+      tag = mkOption {
+        type = types.str;
+        default = "latest";
+      };
+      pullPolicy = mkOption {
+        type = types.str;
+        default = "IfNotPresent";
+      };
+    };
+    service = utils.mkNestedOption {
+      port = mkOption {
+        type = types.int;
+        default = 5432;
+      };
+      type = mkOption {
+        type = types.str;
+        default = "ClusterIP";
+      };
+    };
+    storage = mkOption {
+      type = types.str;
+      default = "5G";
+    };
+
+    # internal
+    uniqueName = mkOption {
+      internal = true;
+      type = types.str;
+      default = "${project}-postgres";
+    };
+  };
+}