Feature/lab6

.github/pull_request_template.md

@@ -0,0 +1,19 @@
+## Goal
+<!-- What does this PR accomplish? 1 sentence. -->
+
+Complete lab 3 DevOps
+
+## Changes
+* Added submissions/lab3.md
+* Create GitHub Action CI Workflows
+* Added Go environment ubuntu 24.04
+
+## Testing
+<!-- How did you verify it? -->
+* Start CI action on GitHub and green CI run
+* Verfied CI run pipeline
+
+## Checklist
+- ☑️ Title is a clear sentence (≤ 70 chars)
+- ☑️ Vet, Test, and Lint checks pass
+- ☑️ `submissions/lab3.md` updated

.github/workflows/ci.yml

@@ -0,0 +1,83 @@
+name: PR Gate
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'app/**'
+      - '.github/workflows/ci.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'app/**'
+      - '.github/workflows/ci.yml'
+
+permissions:
+  contents: read   # минимальные права
+
+jobs:
+  # ---------- vet ----------
+  vet:
+    name: go vet
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go-version: [ '1.23', '1.24' ]
+      fail-fast: false
+    defaults:
+      run:
+        working-directory: app
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - name: Setup Go
+        uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32  # v5.3.0
+        with:
+          go-version: ${{ matrix.go-version }}
+          cache: true
+      - name: Run go vet
+        run: go vet ./...
+
+  # ---------- test ----------
+  test:
+    name: go test -race
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        go-version: [ '1.23', '1.24' ]
+      fail-fast: false
+    defaults:
+      run:
+        working-directory: app
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - name: Setup Go
+        uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32  # v5.3.0
+        with:
+          go-version: ${{ matrix.go-version }}
+          cache: true
+      - name: Run tests with race detector
+        run: go test -race -count=1 ./...
+
+  # ---------- lint ----------
+  lint:
+    name: golangci-lint
+    runs-on: ubuntu-24.04
+    defaults:
+      run:
+        working-directory: app
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+      - name: Setup Go
+        uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32  # v5.3.0
+        with:
+          go-version: '1.24'      # достаточно одной версии для линтера
+          cache: true
+      - name: Install golangci-lint v2.5.0
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | \
+            sh -s -- -b $(go env GOPATH)/bin v2.5.0
+      - name: Run golangci-lint
+        run: golangci-lint run ./...

app/Dockerfile

@@ -0,0 +1,40 @@
+#---------- Builder stage ----------
+
+FROM golang:1.24-alpine AS builder
+
+# WorkDir
+
+WORKDIR /build
+
+# copy go.mod and run
+
+COPY go.mod ./
+RUN go mod download
+
+COPY . .
+
+
+# CGO_ENABLED=0 — disable CGO 
+# -ldflags='-s -w' — delete table symbol
+
+RUN CGO_ENABLED=0 GOOS=linux go build \
+    -ldflags='-s -w' \
+    -trimpath \
+    -o quicknotes .
+
+# -------------------- Runtime stage --------------------
+FROM gcr.io/distroless/static:nonroot
+
+# copy bin from builder-stage
+
+COPY --from=builder /build/quicknotes /quicknotes
+
+# UID 65532 in distroless/static:nonroot
+
+USER 65532:65532
+
+# port
+EXPOSE 8080
+
+# exec-form
+ENTRYPOINT ["/quicknotes"]

compose.yaml

@@ -0,0 +1,27 @@
+services:
+  quicknotes:
+    build:
+      context: ./app
+      dockerfile: Dockerfile
+    image: quicknotes:lab6
+    container_name: quicknotes
+    ports:
+      - "8080:8080"
+    volumes:
+      - quicknotes-data:/data
+    environment:
+      - ADDR=:8080
+      - DATA_PATH=/data/notes.json
+      - SEED_PATH=/data/seed.json
+    healthcheck:
+      test: ["CMD", "/quicknotes", "-healthcheck"]   # or ["CMD-SHELL", "wget -qO- http://localhost:8080/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
+    restart: unless-stopped
+
+
+volumes:
+  quicknotes-data:
+    name: quicknotes-data

lab4-trace.txt

@@ -0,0 +1,132 @@
+19:11:19.932815 IP 127.0.0.1.42566 > 127.0.0.1.8080: Flags [S], seq 3179416048, win 65495, options [mss 65495,sackOK,TS val 2461922435 ecr 0,nop,wscale 7], length 0
+E..<..@.@.(..........F....	..........0.........
+............
+19:11:19.932821 IP 127.0.0.1.8080 > 127.0.0.1.42566: Flags [R.], seq 0, ack 3179416049, win 0, length 0
+E..(..@.@.<............F......	.P...$...
+19:11:19.932861 IP6 ::1.40002 > ::1.8080: Flags [S], seq 2374255427, win 65476, options [mss 65476,sackOK,TS val 2676338689 ecr 0,nop,wscale 7], length 0
+`.~..(.@.................................B....CC.........0.........
+............
+19:11:19.932866 IP6 ::1.8080 > ::1.40002: Flags [R.], seq 0, ack 2374255428, win 0, length 0
+`.k9...@...................................B......CDP.......
+19:12:26.641138 IP 127.0.0.1.41710 > 127.0.0.1.8080: Flags [S], seq 509650619, win 65495, options [mss 65495,sackOK,TS val 2461989143 ecr 0,nop,wscale 7], length 0
+E..<1.@.@.
+..............`...........0.........
+............
+19:12:26.641142 IP 127.0.0.1.8080 > 127.0.0.1.41710: Flags [R.], seq 0, ack 509650620, win 0, length 0
+E..(..@.@.<..................`..P...*3..
+19:12:26.641165 IP6 ::1.32816 > ::1.8080: Flags [S], seq 630744336, win 65476, options [mss 65476,sackOK,TS val 2676405397 ecr 0,nop,wscale 7], length 0
+`	.d.(.@.................................0..%.e..........0.........
+............
+19:12:26.641168 IP6 ::1.8080 > ::1.32816: Flags [R.], seq 0, ack 630744337, win 0, length 0
+`.$....@...................................0....%.e.P.......
+19:12:43.027807 IP 127.0.0.1.41602 > 127.0.0.1.8080: Flags [S], seq 851489407, win 65495, options [mss 65495,sackOK,TS val 2462005530 ecr 0,nop,wscale 7], length 0
+E..<.y@.@..@............2............0.........
+..9.........
+19:12:43.027811 IP 127.0.0.1.8080 > 127.0.0.1.41602: Flags [R.], seq 0, ack 851489408, win 0, length 0
+E..(..@.@.<.................2...P...
+{..
+19:12:43.027836 IP6 ::1.34804 > ::1.8080: Flags [S], seq 3910870731, win 65476, options [mss 65476,sackOK,TS val 2676421784 ecr 0,nop,wscale 7], length 0
+`..Q.(.@......................................&..........0.........
+............
+19:12:43.027839 IP6 ::1.8080 > ::1.34804: Flags [R.], seq 0, ack 3910870732, win 0, length 0
+`......@..........................................&.P.......
+19:12:54.413810 IP 127.0.0.1.52472 > 127.0.0.1.8080: Flags [S], seq 1293846705, win 65495, options [mss 65495,sackOK,TS val 2462016916 ecr 0,nop,wscale 7], length 0
+E..<.H@.@.[q............M............0.........
+..e.........
+19:12:54.413816 IP 127.0.0.1.8080 > 127.0.0.1.52472: Flags [R.], seq 0, ack 1293846706, win 0, length 0
+E..(..@.@.<.................M...P....t..
+19:12:54.413855 IP6 ::1.50118 > ::1.8080: Flags [S], seq 971549680, win 65476, options [mss 65476,sackOK,TS val 2676433170 ecr 0,nop,wscale 7], length 0
+`.|s.(.@....................................9............0.........
+..!.........
+19:12:54.413860 IP6 ::1.8080 > ::1.50118: Flags [R.], seq 0, ack 971549681, win 0, length 0
+`.+f...@........................................9...P.......
+19:13:30.465338 IP 127.0.0.1.45936 > 127.0.0.1.8080: Flags [S], seq 499019428, win 65495, options [mss 65495,sackOK,TS val 2462052968 ecr 0,nop,wscale 7], length 0
+E..<c.@.@............p....n..........0.........
+...h........
+19:13:30.465343 IP 127.0.0.1.8080 > 127.0.0.1.45936: Flags [R.], seq 0, ack 499019429, win 0, length 0
+E..(..@.@.<............p......n.P...Rj..
+19:13:30.465371 IP6 ::1.45326 > ::1.8080: Flags [S], seq 2488604191, win 65476, options [mss 65476,sackOK,TS val 2676469222 ecr 0,nop,wscale 7], length 0
+`.J .(.@.....................................U...........0.........
+............
+19:13:30.465375 IP6 ::1.8080 > ::1.45326: Flags [R.], seq 0, ack 2488604192, win 0, length 0
+`../...@.........................................U. P.......
+21:33:29.974894 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [S], seq 289262757, win 65495, options [mss 65495,sackOK,TS val 2470452477 ecr 0,nop,wscale 7], length 0
+E..<.$@.@............~...=...........0.........
+.@..........
+21:33:29.974902 IP 127.0.0.1.8080 > 127.0.0.1.54142: Flags [S.], seq 2132570133, ack 289262758, win 65483, options [mss 65495,sackOK,TS val 2470452477 ecr 2470452477,nop,wscale 7], length 0
+E..<..@.@.<............~..p..=.......0.........
+.@...@......
+21:33:29.974907 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [.], ack 1, win 512, options [nop,nop,TS val 2470452477 ecr 2470452477], length 0
+E..4.%@.@............~...=....p......(.....
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+21:33:29.974939 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [P.], seq 1:176, ack 1, win 512, options [nop,nop,TS val 2470452477 ecr 2470452477], length 175: HTTP: POST /notes HTTP/1.1
+E....&@.@............~...=....p............
+.@...@..POST /notes HTTP/1.1
+Host: localhost:8080
+User-Agent: curl/7.81.0
+Accept: */*
+Content-Type: application/json
+Content-Length: 39
+
+{"title":"trace me","body":"in flight"}
+21:33:29.974940 IP 127.0.0.1.8080 > 127.0.0.1.54142: Flags [.], ack 176, win 511, options [nop,nop,TS val 2470452477 ecr 2470452477], length 0
+E..4.+@.@.$............~..p..=.U.....(.....
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+21:33:29.980128 IP 127.0.0.1.8080 > 127.0.0.1.54142: Flags [P.], seq 1:207, ack 176, win 512, options [nop,nop,TS val 2470452482 ecr 2470452477], length 206: HTTP: HTTP/1.1 201 Created
+E....,@.@.#............~..p..=.U...........
+.@...@..HTTP/1.1 201 Created
+Content-Type: application/json
+Date: Wed, 17 Jun 2026 18:33:29 GMT
+Content-Length: 93
+
+{"id":5,"title":"trace me","body":"in flight","created_at":"2026-06-17T18:33:29.975704318Z"}
+
+21:33:29.980139 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [.], ack 207, win 511, options [nop,nop,TS val 2470452482 ecr 2470452482], length 0
+E..4.'@.@............~...=.U..p......(.....
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+21:33:29.980234 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [F.], seq 176, ack 207, win 512, options [nop,nop,TS val 2470452482 ecr 2470452482], length 0
+E..4.(@.@............~...=.U..p......(.....
+.@...@..
+21:33:29.980286 IP 127.0.0.1.8080 > 127.0.0.1.54142: Flags [F.], seq 207, ack 177, win 512, options [nop,nop,TS val 2470452482 ecr 2470452482], length 0
+E..4.-@.@.$............~..p..=.V.....(.....
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+21:33:29.980293 IP 127.0.0.1.54142 > 127.0.0.1.8080: Flags [.], ack 208, win 512, options [nop,nop,TS val 2470452482 ecr 2470452482], length 0
+E..4.)@.@............~...=.V..p......(.....
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+21:34:41.834814 IP 127.0.0.1.47718 > 127.0.0.1.8080: Flags [S], seq 1421564529, win 65495, options [mss 65495,sackOK,TS val 2470524337 ecr 0,nop,wscale 7], length 0
+E..<g+@.@............f..T.Zq.........0.........
+.A5.........
+21:34:41.834822 IP 127.0.0.1.8080 > 127.0.0.1.47718: Flags [S.], seq 2578938132, ack 1421564530, win 65483, options [mss 65495,sackOK,TS val 2470524337 ecr 2470524337,nop,wscale 7], length 0
+E..<..@.@.<............f..y.T.Zr.....0.........
+.A5..A5.....
+21:34:41.834828 IP 127.0.0.1.47718 > 127.0.0.1.8080: Flags [.], ack 1, win 512, options [nop,nop,TS val 2470524337 ecr 2470524337], length 0
+E..4g,@.@............f..T.Zr..y......(.....
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+21:34:41.834861 IP 127.0.0.1.47718 > 127.0.0.1.8080: Flags [P.], seq 1:176, ack 1, win 512, options [nop,nop,TS val 2470524337 ecr 2470524337], length 175: HTTP: POST /notes HTTP/1.1
+E...g-@.@............f..T.Zr..y............
+.A5..A5.POST /notes HTTP/1.1
+Host: localhost:8080
+User-Agent: curl/7.81.0
+Accept: */*
+Content-Type: application/json
+Content-Length: 39
+
+{"title":"trace me","body":"in flight"}
+21:34:41.834863 IP 127.0.0.1.8080 > 127.0.0.1.47718: Flags [.], ack 176, win 511, options [nop,nop,TS val 2470524337 ecr 2470524337], length 0
+E..4.i@.@..X...........f..y.T.[!.....(.....
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+21:34:41.839333 IP 127.0.0.1.8080 > 127.0.0.1.47718: Flags [P.], seq 1:207, ack 176, win 512, options [nop,nop,TS val 2470524341 ecr 2470524337], length 206: HTTP: HTTP/1.1 201 Created
+E....j@.@..............f..y.T.[!...........
+.A5..A5.HTTP/1.1 201 Created
+Content-Type: application/json
+Date: Wed, 17 Jun 2026 18:34:41 GMT
+Content-Length: 93
+
+{"id":6,"title":"trace me","body":"in flight","created_at":"2026-06-17T18:34:41.835071034Z"}
+
+21:34:41.839349 IP 127.0.0.1.47718 > 127.0.0.1.8080: Flags [.], ack 207, win 511, options [nop,nop,TS val 2470524342 ecr 2470524341], length 0
+E..4g.@.@............f..T.[!..y......(.....
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+21:34:41.839506 IP 127.0.0.1.47718 > 127.0.0.1.8080: Flags [F.], seq 176, ack 207, win 512, options [nop,nop,TS val 2470524342 ecr 2470524341], length 0
+E..4g/@.@............f..T.[!..y......(.....
+.A5..A5.