Merge pull request #224 from aykhans/dependabot/go_modules/charm.land/bubbles/v2-2.2.1

build(deps): bump charm.land/bubbles/v2 from 2.2.0 to 2.2.1

.github/workflows/nix.yaml

@@ -0,0 +1,172 @@
+name: nix
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - "go.mod"
+      - "go.sum"
+      - "nix/**"
+      - "flake.nix"
+      - "flake.lock"
+  workflow_call:
+    inputs:
+      ref:
+        description: "Ref to check out. Defaults to the triggering ref."
+        type: string
+        required: false
+
+permissions:
+  contents: read
+
+concurrency:
+  group: nix-${{ github.event_name }}-${{ github.event.pull_request.number || github.ref }}
+  # Keyed on the PR author, which is stable across the fix-up push, so the run
+  # started by that push cannot cancel the run that made it.
+  cancel-in-progress: ${{ github.event_name == 'pull_request' && github.event.pull_request.user.login != 'dependabot[bot]' }}
+
+env:
+  SELF_HOSTED_PR: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository }}
+  IS_DEPENDABOT: ${{ github.actor == 'dependabot[bot]' }}
+
+jobs:
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    permissions:
+      # The only write is git push, which authenticates with the PAT that
+      # checkout persists, not with GITHUB_TOKEN.
+      contents: read
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          # head.sha, not the merge ref: the hash is computed for the tree that
+          # gets pushed, and the run that verifies it must build that same tree.
+          ref: ${{ inputs.ref || github.event.pull_request.head.sha || github.ref }}
+          token: ${{ (env.IS_DEPENDABOT == 'true' && secrets.DEPENDABOT) || secrets.GITHUB_TOKEN }}
+
+      - uses: cachix/install-nix-action@v31
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: nix build
+        id: build
+        continue-on-error: ${{ env.SELF_HOSTED_PR == 'true' }}
+        run: nix build .#default --no-link --print-build-logs
+
+      - name: Recompute vendorHash
+        id: hash
+        if: steps.build.outcome == 'failure' && env.SELF_HOSTED_PR == 'true'
+        run: |
+          nix run nixpkgs#nix-update -- --flake --version=skip --no-src default
+
+          # An unchanged hash means the build broke for some other reason. Say
+          # nothing and let the job fail on the real error.
+          if git diff --quiet -- nix/package.nix; then
+            echo "stale=false" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          echo "stale=true" >> "$GITHUB_OUTPUT"
+          sed -n 's/^[[:space:]]*vendorHash = "\([^"]*\)".*/hash=\1/p' nix/package.nix >> "$GITHUB_OUTPUT"
+
+      - name: Push vendorHash fix
+        if: steps.hash.outputs.stale == 'true' && env.IS_DEPENDABOT == 'true'
+        env:
+          HEAD_REF: ${{ github.head_ref }}
+          PUSH_TOKEN: ${{ secrets.DEPENDABOT }}
+        run: |
+          if [ -z "$PUSH_TOKEN" ]; then
+            echo "::error::the DEPENDABOT push token is missing from the Dependabot secret store"
+            exit 1
+          fi
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add nix/package.nix
+          git commit -m "fix(nix): update vendorHash [dependabot skip]"
+          git push origin "HEAD:refs/heads/$HEAD_REF"
+          echo "::notice::vendorHash updated and pushed; the run on the new commit decides this PR"
+
+      - name: Comment stale vendorHash
+        if: steps.hash.outputs.stale == 'true' && env.IS_DEPENDABOT != 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR: ${{ github.event.pull_request.number }}
+          HASH: ${{ steps.hash.outputs.hash }}
+        run: |
+          marker='<!-- vendorhash-bot -->'
+          body=$(cat <<EOF
+          $marker
+          ### \`nix/package.nix\` vendorHash is stale
+
+          This branch changes the Go dependencies, so the vendor derivation no longer matches the pinned hash and \`nix build\` fails.
+
+          \`\`\`nix
+          vendorHash = "$HASH";
+          \`\`\`
+
+          Run \`task nix-hash\` locally and commit the result, or paste the hash above.
+          EOF
+          )
+
+          # Keep one sticky comment instead of a new one on every push. Without
+          # the explicit check a failed lookup reads as "no comment yet" and
+          # posts a duplicate; piping into head would hide the exit status.
+          if ! matches=$(gh api --paginate "repos/$GITHUB_REPOSITORY/issues/$PR/comments?per_page=100" \
+                           --jq ".[] | select(.user.login == \"github-actions[bot]\" and ((.body // \"\") | contains(\"$marker\"))) | .id"); then
+            echo "::error::could not list the pull request comments"
+            exit 1
+          fi
+          id=$(printf '%s\n' "$matches" | head -n 1)
+          if [ -n "$id" ]; then
+            gh api -X PATCH "repos/$GITHUB_REPOSITORY/issues/comments/$id" -f body="$body" >/dev/null
+          else
+            gh pr comment "$PR" --body "$body"
+          fi
+
+      # Once the hash is fixed the build passes and the step above stops running,
+      # so without this the comment keeps claiming the branch is broken under a
+      # green check.
+      - name: Resolve stale vendorHash comment
+        # Gated on the hash rather than the build: a later push can fix the hash
+        # while the build still fails for an unrelated reason, and the comment
+        # must stop blaming the vendor derivation either way. Skipped when the
+        # recompute itself errored, since then we do not know.
+        if: ${{ !cancelled() && env.SELF_HOSTED_PR == 'true' && steps.hash.outputs.stale != 'true' && steps.hash.outcome != 'failure' }}
+        continue-on-error: true
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR: ${{ github.event.pull_request.number }}
+          BUILD: ${{ steps.build.outcome }}
+        run: |
+          marker='<!-- vendorhash-bot -->'
+          if ! matches=$(gh api --paginate "repos/$GITHUB_REPOSITORY/issues/$PR/comments?per_page=100" \
+                           --jq ".[] | select(.user.login == \"github-actions[bot]\" and ((.body // \"\") | contains(\"$marker\"))) | .id"); then
+            echo "::error::could not list the pull request comments"
+            exit 1
+          fi
+          id=$(printf '%s\n' "$matches" | head -n 1)
+          [ -n "$id" ] || exit 0
+
+          if [ "$BUILD" = "success" ]; then
+            detail='`nix build` passes on this branch.'
+          else
+            detail='The build is failing for another reason; see the workflow log.'
+          fi
+          body=$(cat <<EOF
+          $marker
+          ### \`nix/package.nix\` vendorHash is up to date
+
+          $detail
+          EOF
+          )
+          gh api -X PATCH "repos/$GITHUB_REPOSITORY/issues/comments/$id" -f body="$body" >/dev/null
+
+      - name: Report build failure
+        if: ${{ !cancelled() && steps.build.outcome == 'failure' && !(env.IS_DEPENDABOT == 'true' && steps.hash.outputs.stale == 'true') }}
+        run: |
+          echo "::error file=nix/package.nix::nix build failed; see the log above"
+          exit 1

.github/workflows/release.yaml

@@ -21,8 +21,47 @@ permissions:
   contents: write
 
 jobs:
+  nix:
+    name: Verify Nix package
+    uses: ./.github/workflows/nix.yaml
+    permissions:
+      contents: read
+      pull-requests: write
+    with:
+      ref: ${{ inputs.tag || github.ref }}
+
+  # nix/package.nix carries its own version string that has to be bumped by
+  # hand; catch a forgotten bump before the tag ships.
+  version:
+    name: Verify package version
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v7
+        with:
+          ref: ${{ inputs.tag || github.ref }}
+
+      - name: Check nix/package.nix matches the release tag
+        env:
+          TAG: ${{ inputs.tag || github.ref_name }}
+        run: |
+          expected="${TAG#v}"
+          actual="$(sed -n 's/^[[:space:]]*version = "\([^"]*\)".*/\1/p' nix/package.nix | head -1)"
+          if [ -z "$actual" ]; then
+            echo "::error file=nix/package.nix::could not read the version string"
+            exit 1
+          fi
+          if [ "$actual" != "$expected" ]; then
+            echo "::error file=nix/package.nix::version is '$actual' but the release tag is '$TAG' (expected '$expected')"
+            exit 1
+          fi
+          echo "nix/package.nix version '$actual' matches tag '$TAG'"
+
   build:
     name: Build binaries
+    needs: [nix, version]
     runs-on: ubuntu-latest
 
     steps:

.golangci.yaml

@@ -81,6 +81,11 @@ linters:
           - staticcheck
         text: "SA5011"
 
+      - linters:
+          - errcheck
+          - gosec
+        source: "lipgloss\\.Println\\("
+
 formatters:
   enable:
     - gofmt

README.md

@@ -26,13 +26,11 @@ Sarin is designed for efficient HTTP load testing with minimal resource consumpt
 
 | ✅ Supported                                               | ❌ Not Supported                |
 | ---------------------------------------------------------- | ------------------------------- |
-| High-performance with low memory footprint                 | Detailed response body analysis |
-| Long-running duration/count based tests                    | Extensive response statistics   |
-| Dynamic requests via 340+ template functions               | Web UI or complex TUI           |
+| High-performance with low memory footprint                 | Web UI or complex TUI           |
+| Dynamic requests via 340+ template functions               | Detailed response body analysis |
 | Request scripting with Lua and JavaScript                  | Distributed load testing        |
 | Multiple proxy protocols<br>(HTTP, HTTPS, SOCKS5, SOCKS5H) | HTTP/2, HTTP/3, WebSocket, gRPC |
 | Captcha solving<br>(2Captcha, Anti-Captcha, CapSolver)     | Plugins / extensions ecosystem  |
-| Flexible config (CLI, ENV, YAML)                           |                                 |
 
 ## Installation
 
@@ -40,7 +38,7 @@ Sarin is designed for efficient HTTP load testing with minimal resource consumpt
 <summary><b>Docker</b></summary>
 
 ```sh
-docker run -it aykhans/sarin:latest --version
+docker run --rm -it aykhans/sarin:latest --version
 ```
 
 With a local config file:

Taskfile.yaml

@@ -39,6 +39,11 @@ tasks:
     cmds:
       - "{{.GOLANGCI}} run"
 
+  nix-hash:
+    desc: Recompute nix/package.nix vendorHash after a dependency change.
+    cmds:
+      - nix run nixpkgs#nix-update -- --flake --version=skip --no-src default
+
   test:
     desc: Run Go tests.
     cmds:

cmd/cli/main.go

@@ -7,6 +7,7 @@ import (
 	"os/signal"
 	"syscall"
 
+	"charm.land/lipgloss/v2"
 	"go.aykhans.me/sarin/internal/config"
 	"go.aykhans.me/sarin/internal/sarin"
 	"go.aykhans.me/sarin/internal/types"
@@ -32,13 +33,13 @@ func main() {
 		utilsErr.OnType(func(err types.FieldValidationErrors) error {
 			for _, fieldErr := range err.Errors {
 				if fieldErr.Value == "" {
-					fmt.Fprintln(os.Stderr,
+					fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 						config.StyleYellow.Render(fmt.Sprintf("[VALIDATION] Field '%s': ", fieldErr.Field))+fieldErr.Err.Error(),
-					)
+					))
 				} else {
-					fmt.Fprintln(os.Stderr,
+					fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 						config.StyleYellow.Render(fmt.Sprintf("[VALIDATION] Field '%s' (%s): ", fieldErr.Field, fieldErr.Value))+fieldErr.Err.Error(),
-					)
+					))
 				}
 			}
 			os.Exit(1)
@@ -58,17 +59,17 @@ func main() {
 	)
 	_ = utilsErr.MustHandle(err,
 		utilsErr.OnType(func(err types.ProxyDialError) error {
-			fmt.Fprintln(os.Stderr, config.StyleRed.Render("[PROXY] ")+err.Error())
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(config.StyleRed.Render("[PROXY] ")+err.Error()))
 			os.Exit(1)
 			return nil
 		}),
 		utilsErr.OnSentinel(types.ErrScriptEmpty, func(err error) error {
-			fmt.Fprintln(os.Stderr, config.StyleRed.Render("[SCRIPT] ")+err.Error())
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(config.StyleRed.Render("[SCRIPT] ")+err.Error()))
 			os.Exit(1)
 			return nil
 		}),
 		utilsErr.OnType(func(err types.ScriptLoadError) error {
-			fmt.Fprintln(os.Stderr, config.StyleRed.Render("[SCRIPT] ")+err.Error())
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(config.StyleRed.Render("[SCRIPT] ")+err.Error()))
 			os.Exit(1)
 			return nil
 		}),

go.mod

@@ -3,56 +3,51 @@ module go.aykhans.me/sarin
 go 1.26.5
 
 require (
-	github.com/brianvoe/gofakeit/v7 v7.15.0
-	github.com/charmbracelet/bubbles v1.0.0
-	github.com/charmbracelet/bubbletea v1.3.10
-	github.com/charmbracelet/glamour v1.0.0
-	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834
+	charm.land/bubbles/v2 v2.2.1
+	charm.land/bubbletea/v2 v2.0.9
+	charm.land/glamour/v2 v2.0.1
+	charm.land/lipgloss/v2 v2.0.6
+	github.com/brianvoe/gofakeit/v7 v7.16.0
 	github.com/charmbracelet/x/term v0.2.2
-	github.com/dop251/goja v0.0.0-20260723142020-b4aef50fa347
+	github.com/dop251/goja v0.0.0-20260806115107-493f22071ef6
 	github.com/joho/godotenv v1.5.1
-	github.com/valyala/fasthttp v1.72.0
+	github.com/valyala/fasthttp v1.73.0
 	github.com/yuin/gopher-lua v1.1.2
 	go.aykhans.me/utils v1.0.7
 	go.yaml.in/yaml/v4 v4.0.0-rc.6
-	golang.org/x/net v0.57.0
+	golang.org/x/net v0.58.0
 )
 
 require (
 	github.com/alecthomas/chroma/v2 v2.27.0 // indirect
 	github.com/andybalholm/brotli v1.2.2 // indirect
-	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/charmbracelet/colorprofile v0.4.3 // indirect
 	github.com/charmbracelet/harmonica v0.2.0 // indirect
-	github.com/charmbracelet/x/ansi v0.11.7 // indirect
-	github.com/charmbracelet/x/cellbuf v0.0.15 // indirect
-	github.com/charmbracelet/x/exp/slice v0.0.0-20260726004341-482a56510f1b // indirect
+	github.com/charmbracelet/ultraviolet v0.0.0-20260811164956-006e29f97886 // indirect
+	github.com/charmbracelet/x/ansi v0.11.8 // indirect
+	github.com/charmbracelet/x/exp/slice v0.0.0-20260816001655-68d539dca504 // indirect
+	github.com/charmbracelet/x/termios v0.1.1 // indirect
+	github.com/charmbracelet/x/windows v0.2.2 // indirect
 	github.com/clipperhouse/displaywidth v0.11.0 // indirect
 	github.com/clipperhouse/uax29/v2 v2.7.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/dlclark/regexp2/v2 v2.5.2 // indirect
-	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/dlclark/regexp2/v2 v2.7.1 // indirect
 	github.com/go-sourcemap/sourcemap v2.1.4+incompatible // indirect
-	github.com/google/pprof v0.0.0-20260709232956-b9395ee17fa0 // indirect
+	github.com/google/pprof v0.0.0-20260802141513-ef3492d7dac3 // indirect
 	github.com/gorilla/css v1.0.1 // indirect
-	github.com/klauspost/compress v1.19.1 // indirect
-	github.com/lucasb-eyer/go-colorful v1.4.0 // indirect
-	github.com/mattn/go-isatty v0.0.24 // indirect
-	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/klauspost/compress v1.19.2 // indirect
+	github.com/lucasb-eyer/go-colorful v1.4.1 // indirect
 	github.com/mattn/go-runewidth v0.0.27 // indirect
 	github.com/microcosm-cc/bluemonday v1.0.27 // indirect
-	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
-	github.com/muesli/reflow v0.3.0 // indirect
-	github.com/muesli/termenv v0.16.0 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
-	github.com/yuin/goldmark v1.8.4 // indirect
+	github.com/xo/terminfo v1.0.0 // indirect
+	github.com/yuin/goldmark v1.8.5 // indirect
 	github.com/yuin/goldmark-emoji v1.0.6 // indirect
+	golang.org/x/sync v0.22.0 // indirect
 	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/term v0.45.0 // indirect
-	golang.org/x/text v0.40.0 // indirect
+	golang.org/x/text v0.41.0 // indirect
 )

go.sum

@@ -1,3 +1,11 @@
+charm.land/bubbles/v2 v2.2.1 h1:Fq1+qm5hV6GkvzLQDhCBpXXE5tLgvh1PRriCLwSvIQU=
+charm.land/bubbles/v2 v2.2.1/go.mod h1:wdMgn+sje1KNXdwFizIWjbf328fIUBxqEmJ/vYPo8yc=
+charm.land/bubbletea/v2 v2.0.9 h1:DpJCMWKgzQK8SJv4zbKKFHAI10ymWy/evClPFk0k0f8=
+charm.land/bubbletea/v2 v2.0.9/go.mod h1:2SkdgoTXluXJHOUwAoRlRXF/28vklb1rFl6GcgV1/ss=
+charm.land/glamour/v2 v2.0.1 h1:xl+r00A4aJWU0z8fgwKd9fQQ4rsphqGUzuEiXZP5n+c=
+charm.land/glamour/v2 v2.0.1/go.mod h1:jo9z8XqVKPeEFMVdvCRLGk++RyJ3CdUwgNr7EvXLw3k=
+charm.land/lipgloss/v2 v2.0.6 h1:EaGKeuA8FvF+v2BT5VmZd2LoYLaMZJXA5n34th8nCIQ=
+charm.land/lipgloss/v2 v2.0.6/go.mod h1:ipDDJNSGa1hlwDtSfW1s2/xR8Vdhbut4PXh2zEKZd0Q=
 github.com/Masterminds/semver/v3 v3.5.0 h1:kQceYJfbupGfZOKZQg0kou0DgAKhzDg2NZPAwZ/2OOE=
 github.com/Masterminds/semver/v3 v3.5.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
 github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
@@ -8,99 +16,78 @@ github.com/alecthomas/repr v0.5.2 h1:SU73FTI9D1P5UNtvseffFSGmdNci/O6RsqzeXJtP0Qs
 github.com/alecthomas/repr v0.5.2/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/andybalholm/brotli v1.2.2 h1:HzTuoo2ErYQqf5qvcJInB8uvqSVxRttzkFexPWtnceM=
 github.com/andybalholm/brotli v1.2.2/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
-github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
-github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
-github.com/aymanbagabas/go-udiff v0.3.1 h1:LV+qyBQ2pqe0u42ZsUEtPiCaUoqgA9gYRDs3vj1nolY=
-github.com/aymanbagabas/go-udiff v0.3.1/go.mod h1:G0fsKmG+P6ylD0r6N/KgQD/nWzgfnl8ZBcNLgcbrw8E=
+github.com/aymanbagabas/go-udiff v0.4.1 h1:OEIrQ8maEeDBXQDoGCbbTTXYJMYRCRO1fnodZ12Gv5o=
+github.com/aymanbagabas/go-udiff v0.4.1/go.mod h1:0L9PGwj20lrtmEMeyw4WKJ/TMyDtvAoK9bf2u/mNo3w=
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
-github.com/brianvoe/gofakeit/v7 v7.15.0 h1:kGLYAWN8tnmxq2PelKVK6zwpM7kMxdz9SGPH31mFkNs=
-github.com/brianvoe/gofakeit/v7 v7.15.0/go.mod h1:QXuPeBw164PJCzCUZVmgpgHJ3Llj49jSLVkKPMtxtxA=
-github.com/charmbracelet/bubbles v1.0.0 h1:12J8/ak/uCZEMQ6KU7pcfwceyjLlWsDLAxB5fXonfvc=
-github.com/charmbracelet/bubbles v1.0.0/go.mod h1:9d/Zd5GdnauMI5ivUIVisuEm3ave1XwXtD1ckyV6r3E=
-github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=
-github.com/charmbracelet/bubbletea v1.3.10/go.mod h1:ORQfo0fk8U+po9VaNvnV95UPWA1BitP1E0N6xJPlHr4=
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@@ -111,14 +98,13 @@ go.yaml.in/yaml/v4 v4.0.0-rc.6 h1:1h7H1ohdUh93/FyE4YaDa1Zh64K6VVbjF4K6WUxMtH4=
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-golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
+golang.org/x/text v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
+golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/config/config.go

@@ -12,12 +12,11 @@ import (
 	"strings"
 	"time"
 
-	"github.com/charmbracelet/bubbles/viewport"
-	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/glamour"
-	"github.com/charmbracelet/glamour/styles"
-	"github.com/charmbracelet/lipgloss"
-	"github.com/charmbracelet/x/term"
+	"charm.land/bubbles/v2/viewport"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/glamour/v2"
+	"charm.land/glamour/v2/styles"
+	"charm.land/lipgloss/v2"
 	"go.aykhans.me/sarin/internal/sarin"
 	"go.aykhans.me/sarin/internal/script"
 	"go.aykhans.me/sarin/internal/types"
@@ -249,12 +248,12 @@ func (config Config) MarshalYAML() (any, error) {
 func (config Config) Print() bool {
 	configYAML, err := yaml.Marshal(config)
 	if err != nil {
-		fmt.Fprintln(os.Stderr, StyleRed.Render("Error marshaling config to yaml: "+err.Error()))
+		fmt.Fprint(os.Stderr, lipgloss.Sprintln(StyleRed.Render("Error marshaling config to yaml: "+err.Error())))
 		os.Exit(1)
 	}
 
 	// Pipe mode: output raw content directly
-	if !term.IsTerminal(os.Stdout.Fd()) {
+	if !sarin.IsInteractiveTerminal(os.Stdout.Fd()) {
 		fmt.Println(string(configYAML))
 		os.Exit(0)
 	}
@@ -268,25 +267,23 @@ func (config Config) Print() bool {
 		glamour.WithWordWrap(0),
 	)
 	if err != nil {
-		fmt.Fprintln(os.Stderr, StyleRed.Render(err.Error()))
+		fmt.Fprint(os.Stderr, lipgloss.Sprintln(StyleRed.Render(err.Error())))
 		os.Exit(1)
 	}
 
 	content, err := renderer.Render("```yaml\n" + string(configYAML) + "```")
 	if err != nil {
-		fmt.Fprintln(os.Stderr, StyleRed.Render(err.Error()))
+		fmt.Fprint(os.Stderr, lipgloss.Sprintln(StyleRed.Render(err.Error())))
 		os.Exit(1)
 	}
 
 	p := tea.NewProgram(
 		printConfigModel{content: strings.Trim(content, "\n"), rawContent: configYAML},
-		tea.WithAltScreen(),
-		tea.WithMouseCellMotion(),
 	)
 
 	m, err := p.Run()
 	if err != nil {
-		fmt.Fprintln(os.Stderr, StyleRed.Render(err.Error()))
+		fmt.Fprint(os.Stderr, lipgloss.Sprintln(StyleRed.Render(err.Error())))
 		os.Exit(1)
 	}
 
@@ -616,11 +613,11 @@ func ReadAllConfigs() *Config {
 	_ = utilsErr.MustHandle(err,
 		utilsErr.OnType(func(err types.CLIUnexpectedArgsError) error {
 			cliParser.PrintHelp()
-			fmt.Fprintln(os.Stderr,
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 				StyleYellow.Render(
 					"\nUnexpected CLI arguments provided: ",
 				)+strings.Join(err.Args, ", "),
-			)
+			))
 			os.Exit(1)
 			return nil
 		}),
@@ -638,20 +635,20 @@ func ReadAllConfigs() *Config {
 		_ = utilsErr.MustHandle(err,
 			utilsErr.OnType(func(err types.ConfigFileReadError) error {
 				cliParser.PrintHelp()
-				fmt.Fprintln(os.Stderr,
+				fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 					StyleYellow.Render(
 						fmt.Sprintf("\nFailed to read config file (%s): ", configFile.Path())+err.Error(),
 					),
-				)
+				))
 				os.Exit(1)
 				return nil
 			}),
 			utilsErr.OnType(func(err types.UnmarshalError) error {
-				fmt.Fprintln(os.Stderr,
+				fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 					StyleYellow.Render(
 						fmt.Sprintf("\nFailed to parse config file (%s): ", configFile.Path())+err.Error(),
 					),
-				)
+				))
 				os.Exit(1)
 				return nil
 			}),
@@ -754,13 +751,13 @@ func validateScriptSource(script string) error {
 func printParseErrors(parserName string, errors ...types.FieldParseError) {
 	for _, fieldErr := range errors {
 		if fieldErr.Value == "" {
-			fmt.Fprintln(os.Stderr,
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 				StyleYellow.Render(fmt.Sprintf("[%s] Field '%s': ", parserName, fieldErr.Field))+fieldErr.Err.Error(),
-			)
+			))
 		} else {
-			fmt.Fprintln(os.Stderr,
+			fmt.Fprint(os.Stderr, lipgloss.Sprintln(
 				StyleYellow.Render(fmt.Sprintf("[%s] Field '%s' (%s): ", parserName, fieldErr.Field, fieldErr.Value))+fieldErr.Err.Error(),
-			)
+			))
 		}
 	}
 }
@@ -801,7 +798,7 @@ func (m printConfigModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	var cmd tea.Cmd
 
 	switch msg := msg.(type) {
-	case tea.KeyMsg:
+	case tea.KeyPressMsg:
 		switch msg.String() {
 		case "ctrl+c", "esc":
 			return m, tea.Quit
@@ -824,13 +821,22 @@ func (m printConfigModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m, cmd
 }
 
-func (m printConfigModel) View() string {
+func (m printConfigModel) View() tea.View {
+	// AltScreen and MouseMode were program options in bubbletea v1; in v2 they
+	// are view properties, so every return path has to declare them.
+	newView := func(s string) tea.View {
+		v := tea.NewView(s)
+		v.AltScreen = true
+		v.MouseMode = tea.MouseModeCellMotion
+		return v
+	}
+
 	if !m.ready {
-		return "\n  Initializing..."
+		return newView("\n  Initializing...")
 	}
 
 	content := lipgloss.JoinHorizontal(lipgloss.Top, m.viewport.View(), m.scrollbar())
-	return fmt.Sprintf("%s\n%s\n%s", m.headerView(), content, m.footerView())
+	return newView(fmt.Sprintf("%s\n%s\n%s", m.headerView(), content, m.footerView()))
 }
 
 func (m *printConfigModel) saveContent() (printConfigModel, tea.Cmd) {
@@ -850,12 +856,13 @@ func (m *printConfigModel) handleResize(msg tea.WindowSizeMsg) {
 	width := msg.Width - scrollbarWidth
 
 	if !m.ready {
-		m.viewport = viewport.New(width, height)
+		m.viewport = viewport.New(viewport.WithWidth(width), viewport.WithHeight(height))
+		m.viewport.SetHorizontalStep(0)
 		m.viewport.SetContent(m.contentWithLineNumbers())
 		m.ready = true
 	} else {
-		m.viewport.Width = width
-		m.viewport.Height = height
+		m.viewport.SetWidth(width)
+		m.viewport.SetHeight(height)
 	}
 }
 
@@ -870,12 +877,12 @@ func (m printConfigModel) headerView() string {
 			printConfigKeyStyle.Render("ESC") + printConfigDescStyle.Render(" exit")
 		title = printConfigHelpStyle.Render(help)
 	}
-	line := strings.Repeat("─", max(0, m.viewport.Width+scrollbarWidth-lipgloss.Width(title)))
+	line := strings.Repeat("─", max(0, m.viewport.Width()+scrollbarWidth-lipgloss.Width(title)))
 	return lipgloss.JoinHorizontal(lipgloss.Center, title, line)
 }
 
 func (m printConfigModel) footerView() string {
-	return strings.Repeat("─", m.viewport.Width+scrollbarWidth)
+	return strings.Repeat("─", m.viewport.Width()+scrollbarWidth)
 }
 
 func (m printConfigModel) contentWithLineNumbers() string {
@@ -897,7 +904,7 @@ func (m printConfigModel) contentWithLineNumbers() string {
 }
 
 func (m printConfigModel) scrollbar() string {
-	height := m.viewport.Height
+	height := m.viewport.Height()
 	trackHeight := height - scrollbarBottomSpace
 	totalLines := m.viewport.TotalLineCount()
 

internal/sarin/request.go

@@ -56,9 +56,9 @@ func NewRequestGenerator(
 
 	pathGenerator, isPathGeneratorDynamic := createTemplateFunc(requestURL.Path, lazyTemplateRoot)
 	methodGenerator, isMethodGeneratorDynamic := NewMethodGeneratorFunc(localRand, methods, lazyTemplateRoot)
-	paramsGenerator, isParamsGeneratorDynamic := NewParamsGeneratorFunc(localRand, params, lazyTemplateRoot)
-	headersGenerator, isHeadersGeneratorDynamic := NewHeadersGeneratorFunc(localRand, headers, lazyTemplateRoot)
-	cookiesGenerator, isCookiesGeneratorDynamic := NewCookiesGeneratorFunc(localRand, cookies, lazyTemplateRoot)
+	paramsGenerator, isParamsGeneratorDynamic, paramKeysAreStatic := NewParamsGeneratorFunc(localRand, params, lazyTemplateRoot)
+	headersGenerator, isHeadersGeneratorDynamic, headerKeysAreStatic := NewHeadersGeneratorFunc(localRand, headers, lazyTemplateRoot)
+	cookiesGenerator, isCookiesGeneratorDynamic, cookieKeysAreStatic := NewCookiesGeneratorFunc(localRand, cookies, lazyTemplateRoot)
 
 	bodyTemplateFuncMapData := &BodyTemplateFuncMapData{}
 	var bodyTemplateRoot *template.Template
@@ -83,13 +83,26 @@ func NewRequestGenerator(
 		Cookies: make(map[string][]string),
 	}
 
+	// When a map's key set is fixed, every request refills exactly the same keys, so
+	// the value slices can be truncated and reused instead of being reallocated after
+	// a clear(). Scripts are excluded: they may swap the maps out or add keys of their
+	// own, and they would observe a leftover empty slice where a key used to be absent.
+	reuseParamSlices := paramKeysAreStatic && !hasScripts
+	reuseHeaderSlices := headerKeysAreStatic && !hasScripts
+	reuseCookieSlices := cookieKeysAreStatic && !hasScripts
+
 	var (
 		data valuesData
 		path string
 		err  error
 	)
 	return func(req *fasthttp.Request) error {
-			resetRequestData(reqData)
+			resetStringSliceMap(reqData.Headers, reuseHeaderSlices)
+			resetStringSliceMap(reqData.Params, reuseParamSlices)
+			resetStringSliceMap(reqData.Cookies, reuseCookieSlices)
+			reqData.Method = ""
+			reqData.Path = ""
+			reqData.Body = ""
 
 			data, err = valuesGenerator()
 			if err != nil {
@@ -143,20 +156,24 @@ func NewRequestGenerator(
 			hasScripts
 }
 
-func resetRequestData(reqData *script.RequestData) {
-	reqData.Method = ""
-	reqData.Path = ""
-	reqData.Body = ""
-	clear(reqData.Headers)
-	clear(reqData.Params)
-	clear(reqData.Cookies)
+// resetStringSliceMap empties m for the next render. With reuse it truncates the
+// value slices in place so the following appends land in the existing backing
+// arrays, without it the map is cleared so no stale key can survive.
+func resetStringSliceMap(m map[string][]string, reuse bool) {
+	if !reuse {
+		clear(m)
+		return
+	}
+	for k, v := range m {
+		m[k] = v[:0]
+	}
 }
 
 func applyRequestDataToFastHTTP(reqData *script.RequestData, req *fasthttp.Request, host, scheme string) {
 	req.Header.SetHost(host)
 	req.SetRequestURI(reqData.Path)
 	req.Header.SetMethod(reqData.Method)
-	req.SetBody([]byte(reqData.Body))
+	req.SetBodyString(reqData.Body)
 
 	for k, values := range reqData.Headers {
 		for _, v := range values {
@@ -164,20 +181,28 @@ func applyRequestDataToFastHTTP(reqData *script.RequestData, req *fasthttp.Reque
 		}
 	}
 
-	for k, values := range reqData.Params {
-		for _, v := range values {
-			req.URI().QueryArgs().Add(k, v)
+	if len(reqData.Params) > 0 {
+		args := req.URI().QueryArgs()
+		for k, values := range reqData.Params {
+			for _, v := range values {
+				args.Add(k, v)
+			}
 		}
 	}
 
 	if len(reqData.Cookies) > 0 {
-		cookieStrings := make([]string, 0, len(reqData.Cookies))
+		var sb strings.Builder
 		for k, values := range reqData.Cookies {
 			for _, v := range values {
-				cookieStrings = append(cookieStrings, k+"="+v)
+				if sb.Len() > 0 {
+					sb.WriteString("; ")
+				}
+				sb.WriteString(k)
+				sb.WriteByte('=')
+				sb.WriteString(v)
 			}
 		}
-		req.Header.Add("Cookie", strings.Join(cookieStrings, "; "))
+		req.Header.Add("Cookie", sb.String())
 	}
 
 	if scheme == "https" {
@@ -221,8 +246,8 @@ func NewBodyGeneratorFunc(localRand *rand.Rand, bodies []string, lazyRoot func()
 	}, isDynamic
 }
 
-func NewParamsGeneratorFunc(localRand *rand.Rand, params types.Params, lazyRoot func() *template.Template) (requestDataGenerator, bool) {
-	generators, isDynamic := buildKeyValueGenerators(localRand, params, lazyRoot)
+func NewParamsGeneratorFunc(localRand *rand.Rand, params types.Params, lazyRoot func() *template.Template) (requestDataGenerator, bool, bool) {
+	generators, isDynamic, keysAreStatic := buildKeyValueGenerators(localRand, params, lazyRoot)
 
 	var (
 		key, value string
@@ -243,11 +268,11 @@ func NewParamsGeneratorFunc(localRand *rand.Rand, params types.Params, lazyRoot
 			reqData.Params[key] = append(reqData.Params[key], value)
 		}
 		return nil
-	}, isDynamic
+	}, isDynamic, keysAreStatic
 }
 
-func NewHeadersGeneratorFunc(localRand *rand.Rand, headers types.Headers, lazyRoot func() *template.Template) (requestDataGenerator, bool) {
-	generators, isDynamic := buildKeyValueGenerators(localRand, headers, lazyRoot)
+func NewHeadersGeneratorFunc(localRand *rand.Rand, headers types.Headers, lazyRoot func() *template.Template) (requestDataGenerator, bool, bool) {
+	generators, isDynamic, keysAreStatic := buildKeyValueGenerators(localRand, headers, lazyRoot)
 
 	var (
 		key, value string
@@ -268,11 +293,11 @@ func NewHeadersGeneratorFunc(localRand *rand.Rand, headers types.Headers, lazyRo
 			reqData.Headers[key] = append(reqData.Headers[key], value)
 		}
 		return nil
-	}, isDynamic
+	}, isDynamic, keysAreStatic
 }
 
-func NewCookiesGeneratorFunc(localRand *rand.Rand, cookies types.Cookies, lazyRoot func() *template.Template) (requestDataGenerator, bool) {
-	generators, isDynamic := buildKeyValueGenerators(localRand, cookies, lazyRoot)
+func NewCookiesGeneratorFunc(localRand *rand.Rand, cookies types.Cookies, lazyRoot func() *template.Template) (requestDataGenerator, bool, bool) {
+	generators, isDynamic, keysAreStatic := buildKeyValueGenerators(localRand, cookies, lazyRoot)
 
 	var (
 		key, value string
@@ -293,14 +318,26 @@ func NewCookiesGeneratorFunc(localRand *rand.Rand, cookies types.Cookies, lazyRo
 			reqData.Cookies[key] = append(reqData.Cookies[key], value)
 		}
 		return nil
-	}, isDynamic
+	}, isDynamic, keysAreStatic
 }
 
 func NewValuesGeneratorFunc(values []string, lazyRoot func() *template.Template) func() (valuesData, error) {
+	// No values configured: hand back one shared empty map instead of allocating a
+	// fresh one for every request. Nothing ever writes to it.
+	if len(values) == 0 {
+		empty := valuesData{Values: map[string]string{}}
+		return func() (valuesData, error) { return empty, nil }
+	}
+
 	generators := make([]func(_ any) (string, error), len(values))
 
+	isDynamic := false
 	for i, v := range values {
-		generators[i], _ = createTemplateFunc(v, lazyRoot)
+		var valueIsDynamic bool
+		generators[i], valueIsDynamic = createTemplateFunc(v, lazyRoot)
+		if valueIsDynamic {
+			isDynamic = true
+		}
 	}
 
 	var (
@@ -308,7 +345,7 @@ func NewValuesGeneratorFunc(values []string, lazyRoot func() *template.Template)
 		data     map[string]string
 		err      error
 	)
-	return func() (valuesData, error) {
+	generate := func() (valuesData, error) {
 		result := make(map[string]string)
 		for _, generator := range generators {
 			rendered, err = generator(nil)
@@ -326,6 +363,15 @@ func NewValuesGeneratorFunc(values []string, lazyRoot func() *template.Template)
 
 		return valuesData{Values: result}, nil
 	}
+
+	// Every value is a literal, so the parsed result is identical on every request:
+	// render and parse once instead of re-running godotenv per request.
+	if !isDynamic {
+		staticResult, staticErr := generate()
+		return func() (valuesData, error) { return staticResult, staticErr }
+	}
+
+	return generate
 }
 
 func createTemplateFunc(value string, lazyRoot func() *template.Template) (func(data any) (string, error), bool) {
@@ -335,15 +381,19 @@ func createTemplateFunc(value string, lazyRoot func() *template.Template) (func(
 
 	tmpl, err := lazyRoot().New("").Parse(value)
 	if err == nil && hasTemplateActions(tmpl) {
-		var err error
+		var (
+			buf bytes.Buffer
+			err error
+		)
 		return func(data any) (string, error) {
-			var buf bytes.Buffer
+			buf.Reset()
 			if err = tmpl.Execute(&buf, data); err != nil {
 				return "", types.NewTemplateRenderError(err)
 			}
 			return buf.String(), nil
 		}, true
 	}
+
 	return func(_ any) (string, error) { return value, nil }, false
 }
 
@@ -360,8 +410,9 @@ func buildKeyValueGenerators[T keyValueItem](
 	localRand *rand.Rand,
 	items []T,
 	lazyRoot func() *template.Template,
-) ([]keyValueGenerator, bool) {
+) ([]keyValueGenerator, bool, bool) {
 	isDynamic := false
+	keysAreStatic := true
 	generators := make([]keyValueGenerator, len(items))
 
 	for generatorIndex, item := range items {
@@ -372,6 +423,7 @@ func buildKeyValueGenerators[T keyValueItem](
 		keyFunc, keyIsDynamic := createTemplateFunc(keyValue.Key, lazyRoot)
 		if keyIsDynamic {
 			isDynamic = true
+			keysAreStatic = false
 		}
 
 		// Generate value functions
@@ -394,7 +446,7 @@ func buildKeyValueGenerators[T keyValueItem](
 		}
 	}
 
-	return generators, isDynamic
+	return generators, isDynamic, keysAreStatic
 }
 
 func buildStringSliceGenerator(

internal/sarin/response.go

@@ -2,7 +2,6 @@ package sarin
 
 import (
 	"encoding/json"
-	"fmt"
 	"math/big"
 	"os"
 	"slices"
@@ -10,8 +9,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/charmbracelet/lipgloss"
-	"github.com/charmbracelet/lipgloss/table"
+	"charm.land/lipgloss/v2"
+	"charm.land/lipgloss/v2/table"
 	"go.yaml.in/yaml/v4"
 )
 
@@ -159,7 +158,7 @@ func (data *SarinResponseData) PrintTable() {
 			return cellStyle
 		})
 
-	fmt.Println(tbl)
+	lipgloss.Println(tbl)
 }
 
 func (data *SarinResponseData) PrintJSON() {

internal/sarin/runner.go

@@ -51,6 +51,18 @@ func SplitLogLevels(levels string) []string {
 	return out
 }
 
+// IsInteractiveTerminal reports whether fd is a terminal that can actually be
+// drawn on. A pty reports as a terminal even while its size is still zero, and
+// Bubble Tea paints into a width x height cell buffer, so a zero dimension
+// renders nothing at all.
+func IsInteractiveTerminal(fd uintptr) bool {
+	if !term.IsTerminal(fd) {
+		return false
+	}
+	width, height, err := term.GetSize(fd)
+	return err == nil && width > 0 && height > 0
+}
+
 // respLogger logs a single completed response.
 type respLogger func(duration time.Duration, resp *fasthttp.Response)
 
@@ -302,7 +314,7 @@ func (s sarin) Start(ctx context.Context, stopCtrl *StopController) {
 		totalRequests = *s.totalRequests
 	}
 
-	onTerminal := term.IsTerminal(os.Stdout.Fd())
+	onTerminal := IsInteractiveTerminal(os.Stdout.Fd())
 	// The progress bar needs an interactive terminal to render.
 	showProgressBar := s.showProgress && onTerminal
 	// The bubbletea TUI hosts the bar and/or the live log box, so it runs whenever

internal/sarin/stop.go

@@ -6,7 +6,7 @@ import (
 	"sync"
 	"sync/atomic"
 
-	tea "github.com/charmbracelet/bubbletea"
+	tea "charm.land/bubbletea/v2"
 )
 
 const forceExitCode = 130

internal/sarin/tui.go

@@ -2,19 +2,30 @@ package sarin
 
 import (
 	"context"
+	"slices"
 	"strconv"
 	"strings"
 	"sync/atomic"
 	"time"
 
-	"github.com/charmbracelet/bubbles/progress"
-	"github.com/charmbracelet/bubbles/spinner"
-	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
+	"charm.land/bubbles/v2/progress"
+	"charm.land/bubbles/v2/spinner"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
 )
 
 type tickMsg time.Time
 
+// logBatch carries the log lines accumulated since the last repaint.
+type logBatch []runtimeLog
+
+const (
+	// logBoxLines is how many lines the log box shows at once.
+	logBoxLines = 8
+	// logBatchInterval is how often accumulated logs are handed to the program.
+	logBatchInterval = 250 * time.Millisecond
+)
+
 var (
 	helpStyle  = lipgloss.NewStyle().Foreground(lipgloss.Color("#d1d1d1"))
 	errorStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("#FC5B5B")).Bold(true)
@@ -82,22 +93,24 @@ func (m progressModel) Init() tea.Cmd {
 
 func (m progressModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	switch msg := msg.(type) {
-	case tea.KeyMsg:
-		if msg.Type == tea.KeyCtrlC {
+	case tea.KeyPressMsg:
+		if msg.String() == "ctrl+c" {
 			m.cancelling = true
 			m.stop()
 		}
 		return m, nil
 
 	case tea.WindowSizeMsg:
-		m.progress.Width = max(10, msg.Width-1)
+		m.progress.SetWidth(max(10, msg.Width-1))
 		if m.ctx.Err() != nil {
 			return m, tea.Quit
 		}
 		return m, nil
 
-	case runtimeLog:
-		m.logs = append(m.logs[1:], renderRuntimeLog(msg))
+	case logBatch:
+		for _, entry := range msg {
+			m.logs = append(m.logs[1:], renderRuntimeLog(entry))
+		}
 		if m.ctx.Err() != nil {
 			return m, tea.Quit
 		}
@@ -117,7 +130,7 @@ func (m progressModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	}
 }
 
-func (m progressModel) View() string {
+func (m progressModel) View() tea.View {
 	var b strings.Builder
 	if box := renderLogBox(m.logs); box != "" {
 		b.WriteString(box)
@@ -138,7 +151,7 @@ func (m progressModel) View() string {
 
 	b.WriteString("\n\n  ")
 	b.WriteString(helpLine(m.cancelling))
-	return b.String()
+	return tea.NewView(b.String())
 }
 
 func progressTickCmd() tea.Cmd {
@@ -167,15 +180,17 @@ func (m infiniteProgressModel) Init() tea.Cmd {
 
 func (m infiniteProgressModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	switch msg := msg.(type) {
-	case tea.KeyMsg:
-		if msg.Type == tea.KeyCtrlC {
+	case tea.KeyPressMsg:
+		if msg.String() == "ctrl+c" {
 			m.cancelling = true
 			m.stop()
 		}
 		return m, nil
 
-	case runtimeLog:
-		m.logs = append(m.logs[1:], renderRuntimeLog(msg))
+	case logBatch:
+		for _, entry := range msg {
+			m.logs = append(m.logs[1:], renderRuntimeLog(entry))
+		}
 		if m.ctx.Err() != nil {
 			m.quit = true
 			return m, tea.Quit
@@ -193,7 +208,7 @@ func (m infiniteProgressModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	}
 }
 
-func (m infiniteProgressModel) View() string {
+func (m infiniteProgressModel) View() tea.View {
 	var b strings.Builder
 	if box := renderLogBox(m.logs); box != "" {
 		b.WriteString(box)
@@ -206,7 +221,7 @@ func (m infiniteProgressModel) View() string {
 			b.WriteString("\n\n  ")
 			b.WriteString(helpLine(m.cancelling))
 		}
-		return b.String()
+		return tea.NewView(b.String())
 	}
 
 	if m.quit {
@@ -227,7 +242,7 @@ func (m infiniteProgressModel) View() string {
 		b.WriteString("\n\n  ")
 		b.WriteString(helpLine(m.cancelling))
 	}
-	return b.String()
+	return tea.NewView(b.String())
 }
 
 func (s sarin) streamProgress(
@@ -242,9 +257,12 @@ func (s sarin) streamProgress(
 	var program *tea.Program
 	if total > 0 {
 		model := progressModel{
-			progress:  progress.New(progress.WithGradient("#151594", "#00D4FF")),
+			progress: progress.New(
+				progress.WithColors(lipgloss.Color("#151594"), lipgloss.Color("#00D4FF")),
+				progress.WithFillCharacters(progress.DefaultFullCharFullBlock, progress.DefaultEmptyCharBlock),
+			),
 			startTime: time.Now(),
-			logs:      make([]string, 8),
+			logs:      make([]string, logBoxLines),
 			counter:   counter,
 			maxValue:  total,
 			showBar:   showBar,
@@ -275,7 +293,7 @@ func (s sarin) streamProgress(
 			),
 			startTime: time.Now(),
 			counter:   counter,
-			logs:      make([]string, 8),
+			logs:      make([]string, logBoxLines),
 			showBar:   showBar,
 			ctx:       ctx,
 			stop:      stopCtrl.Stop,
@@ -288,9 +306,35 @@ func (s sarin) streamProgress(
 	stopCtrl.AttachProgram(program)
 	defer stopCtrl.AttachProgram(nil)
 
+	// Bubble Tea repaints once per message, so forwarding every log made the run
+	// wait on the terminal. Send only what the box shows, on a fixed cadence.
 	go func() {
-		for msg := range logChannel {
-			program.Send(msg)
+		ticker := time.NewTicker(logBatchInterval)
+		defer ticker.Stop()
+
+		pending := make(logBatch, 0, logBoxLines)
+		flush := func() {
+			if len(pending) == 0 {
+				return
+			}
+			program.Send(slices.Clone(pending))
+			pending = pending[:0]
+		}
+
+		for {
+			select {
+			case entry, ok := <-logChannel:
+				if !ok {
+					flush()
+					return
+				}
+				if len(pending) == logBoxLines {
+					pending = append(pending[:0], pending[1:]...)
+				}
+				pending = append(pending, entry)
+			case <-ticker.C:
+				flush()
+			}
 		}
 	}()
 

internal/sarin/worker.go

@@ -12,19 +12,19 @@ import (
 const dryRunResponseKey = "dry-run"
 
 // statusCodeStrings contains pre-computed string representations for HTTP status codes 100-599.
-var statusCodeStrings = func() map[int]string {
-	m := make(map[int]string, 500)
-	for i := 100; i < 600; i++ {
-		m[i] = strconv.Itoa(i)
+var statusCodeStrings = func() [500]string {
+	var codes [500]string
+	for i := range codes {
+		codes[i] = strconv.Itoa(i + 100)
 	}
-	return m
+	return codes
 }()
 
 // statusCodeToString returns a string representation of the HTTP status code.
-// Uses a pre-computed map for codes 100-599, falls back to strconv.Itoa for others.
+// Uses a pre-computed table for codes 100-599, falls back to strconv.Itoa for others.
 func statusCodeToString(code int) string {
-	if s, ok := statusCodeStrings[code]; ok {
-		return s
+	if i := code - 100; i >= 0 && i < len(statusCodeStrings) {
+		return statusCodeStrings[i]
 	}
 	return strconv.Itoa(code)
 }
@@ -94,7 +94,6 @@ func (s sarin) workerStatsWithDynamic(
 ) {
 	for range jobs {
 		req.Reset()
-		resp.Reset()
 
 		if err := requestGenerator(req); err != nil {
 			s.responses.Add(err.Error(), 0)
@@ -138,8 +137,6 @@ func (s sarin) workerStatsWithStatic(
 	}
 
 	for range jobs {
-		resp.Reset()
-
 		startTime := time.Now()
 		err := hostClientGenerator().DoTimeout(req, resp, s.timeout)
 		respDuration := time.Since(startTime)
@@ -165,7 +162,6 @@ func (s sarin) workerNoStatsWithDynamic(
 ) {
 	for range jobs {
 		req.Reset()
-		resp.Reset()
 		if err := requestGenerator(req); err != nil {
 			sendLog(runtimeLogLevelError, err.Error())
 			counter.Add(1)
@@ -201,7 +197,6 @@ func (s sarin) workerNoStatsWithStatic(
 	}
 
 	for range jobs {
-		resp.Reset()
 		startTime := time.Now()
 		err := hostClientGenerator().DoTimeout(req, resp, s.timeout)
 		if err == nil {

nix/package.nix

@@ -7,11 +7,11 @@
 
 (buildGoModule.override { go = go_1_26; }) (finalAttrs: {
   pname = "sarin";
-  version = "1.4.0"; # bump per release
+  version = "1.4.2"; # bump per release
 
   src = lib.cleanSource ../.;
 
-  vendorHash = "sha256-/r2mioVoMbrboumF0sjHhharkGImQAShmiOQtdS5DaE=";
+  vendorHash = "sha256-Yn1d2NbPYhlXzoJl4QbmZ/K7/UdwheWLj2mLyegRPvM=";
 
   subPackages = [ "cmd/cli" ];
 
@@ -29,7 +29,6 @@
     ldflags+=("-X 'go.aykhans.me/sarin/internal/version.GoVersion=$(go version)'")
   '';
 
-  # cmd/cli produces a binary named "cli"; rename it to "sarin".
   postInstall = ''
     mv $out/bin/cli $out/bin/sarin
   '';