chore: add rock for loki v3.1.1 (#36)

Co-authored-by: Github Actions <[email protected]>

3.1.1/loki-local-config.yaml

@@ -0,0 +1,50 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+
+common:
+  path_prefix: /tmp/loki
+  storage:
+    filesystem:
+      chunks_directory: /tmp/loki/chunks
+      rules_directory: /tmp/loki/rules
+  replication_factor: 1
+  ring:
+    instance_addr: 127.0.0.1
+    kvstore:
+      store: inmemory
+
+query_range:
+  results_cache:
+    cache:
+      embedded_cache:
+        enabled: true
+        max_size_mb: 100
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: boltdb-shipper
+      object_store: filesystem
+      schema: v11
+      index:
+        prefix: index_
+        period: 24h
+
+ruler:
+  alertmanager_url: http://localhost:9093
+
+# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
+# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
+#
+# Statistics help us better understand how Loki is used, and they show us performance
+# levels for most users. This helps us prioritize features and documentation.
+# For more information on what's sent, look at
+# https://github.com/grafana/loki/blob/main/pkg/usagestats/stats.go
+# Refer to the buildReport method to see what goes into a report.
+#
+# If you would like to disable reporting, uncomment the following lines:
+#analytics:
+#  reporting_enabled: false

3.1.1/rockcraft.yaml

@@ -0,0 +1,55 @@
+name: loki
+summary: Loki in a ROCK.
+description: "Loki is a horizontally scalable, highly available, multi-tenant log aggregation system inspired by Prometheus."
+version: "3.1.1"
+base: ubuntu:22.04
+license: AGPL-3.0
+services:
+  loki:
+    command: /bin/loki --config.file=/etc/loki/loki-local-config.yaml
+    override: replace
+    startup: enabled
+platforms:
+  amd64:
+parts:
+  loki:
+    plugin: go
+    source: https://github.com/grafana/loki
+    source-type: git
+    source-tag: "v3.1.1"
+    build-snaps:
+      - go/1.21/stable
+    build-environment:
+      - BUILD_IN_CONTAINER: "false"
+    build-packages:
+      - libsystemd-dev
+    override-build: |
+      PROMTAIL_JOURNAL_ENABLED=1 make -j$(grep -c ^processor /proc/cpuinfo) all
+      install -D -m755 ./cmd/loki/loki ${CRAFT_PART_INSTALL}/usr/bin/loki
+      install -D -m755 ./cmd/loki-canary/loki-canary ${CRAFT_PART_INSTALL}/usr/bin/loki-canary
+      install -D -m755 ./cmd/logcli/logcli ${CRAFT_PART_INSTALL}/usr/bin/logcli
+      install -D -m755 ./clients/cmd/promtail/promtail ${CRAFT_PART_INSTALL}/usr/bin/promtail
+    stage:
+      - usr/bin/loki
+      - usr/bin/loki-canary
+      - usr/bin/logcli
+      - usr/bin/promtail
+  default-config:
+    plugin: dump
+    source: .
+    organize:
+      loki-local-config.yaml: etc/loki/loki-local-config.yaml
+    stage:
+      - etc/loki/loki-local-config.yaml
+  ca-certs:
+    plugin: nil
+    overlay-packages: [ca-certificates]
+  deb-security-manifest:
+    plugin: nil
+    after:
+      - loki
+      - ca-certs
+    override-prime: |
+      set -x
+      mkdir -p $CRAFT_PRIME/usr/share/rocks/
+      (echo "# os-release" && cat /etc/os-release && echo "# dpkg-query" && dpkg-query --admindir=$CRAFT_PRIME/var/lib/dpkg/ -f '${db:Status-Abbrev},${binary:Package},${Version},${source:Package},${Source:Version}\n' -W) > $CRAFT_PRIME/usr/share/rocks/dpkg.query