Drop support for julia versions < 1.10

.github/workflows/Documentation.yml

@@ -0,0 +1,26 @@
+---
+name: Documentation
+on:
+  push:
+    branches:
+      - 'master'
+      - 'release-'
+    tags: ['*']
+  pull_request:
+jobs:
+  docs:
+    name: Documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: '1.11'
+      - uses: julia-actions/cache@v2
+      - name: Install dependencies
+        run: julia --project=docs -e 'using Pkg; Pkg.instantiate()'
+      - name: Build and deploy
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+        run: julia --project=docs --color=yes docs/make.jl

.github/workflows/CI.yml → .github/workflows/Test.yml

@@ -1,24 +1,20 @@
-name: CI
-
+---
+name: Test
 on:
   push:
     branches:
       - 'master'
       - 'release-'
-    tags: '*'
+    tags: ['*']
   pull_request:
-
 jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         version:
-          - '1.6'
-          - '1.7'
-          - '1.8'
-          - '1.9'
+          - '1.10'
           - '1'
           - 'nightly'
         os:
@@ -41,19 +37,3 @@ jobs:
           file: lcov.info
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-  docs:
-    name: Documentation
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: '1.11'
-      - uses: julia-actions/cache@v2
-      - name: Install dependencies
-        run: julia --project=docs -e 'using Pkg; Pkg.instantiate()'
-      - name: Build and deploy
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
-        run: julia --project=docs --color=yes docs/make.jl

Project.toml

@@ -11,7 +11,7 @@ SimpleBufferStream = "777ac1f9-54b0-4bf8-805c-2214025038e7"
 CodecZlib = "0.7"
 HTTP = "1"
 SimpleBufferStream = "1"
-julia = "1.6"
+julia = "1.10"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

src/Prometheus.jl

@@ -64,40 +64,6 @@ function verify_metric_name(metric_name::String)
     return metric_name
 end
 
-###########################################
-# Compat for const fields, @lock, @atomic #
-###########################################
-@eval macro $(Symbol("const"))(field)
-    if VERSION >= v"1.8.0-DEV.1148"
-        Expr(:const, esc(field))
-    else
-        return esc(field)
-    end
-end
-if VERSION < v"1.7.0"
-    # Defined but not exported
-    using Base: @lock
-end
-if !isdefined(Base, Symbol("@atomic")) # v1.7.0
-    const ATOMIC_COMPAT_LOCK = ReentrantLock()
-    macro atomic(expr)
-        if Meta.isexpr(expr, :(::))
-            return esc(expr)
-        else
-            return quote
-                lock(ATOMIC_COMPAT_LOCK)
-                tmp = $(esc(expr))
-                unlock(ATOMIC_COMPAT_LOCK)
-                tmp
-            end
-        end
-    end
-end
-if !isdefined(Base, :eachsplit) # v1.8.0
-    const eachsplit = split
-end
-
-
 #####################
 # CollectorRegistry #
 #####################
@@ -151,8 +117,8 @@ end
 #    certain types of exceptions. This is count_exceptions in Python.
 
 mutable struct Counter <: Collector
-    @const metric_name::String
-    @const help::String
+    const metric_name::String
+    const help::String
     @atomic value::Float64
 
     function Counter(
@@ -222,8 +188,8 @@ end
 # https://prometheus.io/docs/instrumenting/writing_clientlibs/#gauge
 
 mutable struct Gauge <: Collector
-    @const metric_name::String
-    @const help::String
+    const metric_name::String
+    const help::String
     @atomic value::Float64
 
     function Gauge(
@@ -335,12 +301,12 @@ const DEFAULT_BUCKETS = [
 ]
 
 mutable struct Histogram <: Collector
-    @const metric_name::String
-    @const help::String
-    @const buckets::Vector{Float64}
+    const metric_name::String
+    const help::String
+    const buckets::Vector{Float64}
     @atomic _count::Int
     @atomic _sum::Float64
-    @const bucket_counters::Vector{Threads.Atomic{Int}}
+    const bucket_counters::Vector{Threads.Atomic{Int}}
 
     function Histogram(
             metric_name::String, help::String; buckets::Vector{Float64} = DEFAULT_BUCKETS,
@@ -439,8 +405,8 @@ end
 # https://prometheus.io/docs/instrumenting/writing_clientlibs/#summary
 
 mutable struct Summary <: Collector
-    @const metric_name::String
-    @const help::String
+    const metric_name::String
+    const help::String
     @atomic _count::Int
     @atomic _sum::Float64
 

src/process_collector.jl

@@ -5,7 +5,7 @@
 #################################
 
 mutable struct ProcessCollector <: Collector
-    @const pid::Function
+    const pid::Function
     @atomic initialized::Ptr{Nothing}
     @atomic system_boot_time::Int
     @atomic clock_ticks_per_second::Int