You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
476 lines
19 KiB
476 lines
19 KiB
using HTTP: HTTP |
|
using Prometheus: Prometheus |
|
using Test: @test, @test_logs, @test_throws, @testset |
|
|
|
@testset "Prometheus.CollectorRegistry" begin |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
# Default registry |
|
c = Prometheus.Counter("metric_name_counter", "A counter.") |
|
@test c in Prometheus.DEFAULT_REGISTRY.collectors |
|
@test_throws ErrorException Prometheus.Counter("metric_name_counter", "A counter.") |
|
Prometheus.unregister(Prometheus.DEFAULT_REGISTRY, c) |
|
@test !(c in Prometheus.DEFAULT_REGISTRY.collectors) |
|
c2 = Prometheus.Counter("metric_name_counter", "A counter.") |
|
@test c2 in Prometheus.DEFAULT_REGISTRY.collectors |
|
# Provided registry |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Counter("metric_name_counter", "A counter."; registry=r) |
|
@test c in r.collectors |
|
@test !(c in Prometheus.DEFAULT_REGISTRY.collectors) |
|
# No registry on construction, register after |
|
c = Prometheus.Counter("metric_name_counter", "A counter."; registry=nothing) |
|
@test !(c in Prometheus.DEFAULT_REGISTRY.collectors) |
|
r = Prometheus.CollectorRegistry() |
|
Prometheus.register(r, c) |
|
@test c in r.collectors |
|
@test_throws ErrorException Prometheus.register(r, c) |
|
end |
|
|
|
@testset "Prometheus.Counter" begin |
|
# Constructors and implicit registration |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
c = Prometheus.Counter("metric_name_counter", "A counter.") |
|
@test c in Prometheus.DEFAULT_REGISTRY.collectors |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Counter("metric_name_counter", "A counter."; registry=r) |
|
@test c in r.collectors |
|
@test c.value == 0 |
|
# Prometheus.inc(...) |
|
Prometheus.inc(c) |
|
@test c.value == 1 |
|
Prometheus.inc(c, 0) |
|
@test c.value == 1 |
|
Prometheus.inc(c, 2) |
|
@test c.value == 3 |
|
@test_throws ErrorException Prometheus.inc(c, -1) |
|
# Prometheus.collect(...) |
|
metrics = Prometheus.collect(c) |
|
@test length(metrics) == 1 |
|
metric = metrics[1] |
|
@test metric.metric_name == c.metric_name |
|
@test metric.help == c.help |
|
@test metric.samples.value == c.value |
|
# Prometheus.expose_metric(...) |
|
@test sprint(Prometheus.expose_metric, metric) == |
|
sprint(Prometheus.expose_io, r) == |
|
""" |
|
# HELP metric_name_counter A counter. |
|
# TYPE metric_name_counter counter |
|
metric_name_counter 3 |
|
""" |
|
end |
|
|
|
@testset "Prometheus.Gauge" begin |
|
# Constructors and implicit registration |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
c = Prometheus.Gauge("metric_name_gauge", "A gauge.") |
|
@test c in Prometheus.DEFAULT_REGISTRY.collectors |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Gauge("metric_name_gauge", "A gauge."; registry=r) |
|
@test c in r.collectors |
|
@test c.value == 0 |
|
# Prometheus.inc(...) |
|
Prometheus.inc(c) |
|
@test c.value == 1 |
|
Prometheus.inc(c, 0) |
|
@test c.value == 1 |
|
Prometheus.inc(c, 2) |
|
@test c.value == 3 |
|
# Prometheus.dec(...) |
|
Prometheus.dec(c) |
|
@test c.value == 2 |
|
Prometheus.dec(c, 1) |
|
@test c.value == 1 |
|
# Prometheus.set_to_current_time(...) |
|
t0 = time() |
|
sleep(0.1) |
|
Prometheus.set_to_current_time(c) |
|
sleep(0.1) |
|
@test t0 < c.value < time() |
|
# Prometheus.set(...) |
|
Prometheus.set(c, 42) |
|
@test c.value == 42 |
|
# Prometheus.collect(...) |
|
metrics = Prometheus.collect(c) |
|
@test length(metrics) == 1 |
|
metric = metrics[1] |
|
@test metric.metric_name == c.metric_name |
|
@test metric.help == c.help |
|
@test metric.samples.value == c.value |
|
# Prometheus.expose_metric(...) |
|
@test sprint(Prometheus.expose_metric, metric) == |
|
sprint(Prometheus.expose_io, r) == |
|
""" |
|
# HELP metric_name_gauge A gauge. |
|
# TYPE metric_name_gauge gauge |
|
metric_name_gauge 42 |
|
""" |
|
end |
|
|
|
@testset "Prometheus.Summary" begin |
|
# Constructors and implicit registration |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
c = Prometheus.Summary("metric_name_summary", "A summary.") |
|
@test c in Prometheus.DEFAULT_REGISTRY.collectors |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Summary("metric_name_summary", "A summary."; registry=r) |
|
@test c in r.collectors |
|
@test c._count == 0 |
|
@test c._sum == 0 |
|
# Prometheus.observe(...) |
|
Prometheus.observe(c, 1) |
|
@test c._count == 1 |
|
@test c._sum == 1 |
|
Prometheus.observe(c, 10) |
|
@test c._count == 2 |
|
@test c._sum == 11 |
|
# Prometheus.collect(...) |
|
metrics = Prometheus.collect(c) |
|
@test length(metrics) == 1 |
|
metric = metrics[1] |
|
@test metric.metric_name == c.metric_name |
|
@test metric.help == c.help |
|
@test length(metric.samples) == 2 |
|
s1, s2 = metric.samples[1], metric.samples[2] |
|
@test s1.suffix == "_count" |
|
@test s2.suffix == "_sum" |
|
@test s1.labels === nothing |
|
@test s2.labels === nothing |
|
@test s1.value == 2 |
|
@test s2.value == 11 |
|
# Prometheus.expose_metric(...) |
|
@test sprint(Prometheus.expose_metric, metric) == |
|
sprint(Prometheus.expose_io, r) == |
|
""" |
|
# HELP metric_name_summary A summary. |
|
# TYPE metric_name_summary summary |
|
metric_name_summary_count 2 |
|
metric_name_summary_sum 11 |
|
""" |
|
end |
|
|
|
@testset "Prometheus.LabelNames and Prometheus.LabelValues" begin |
|
# Custom hashing |
|
v1 = Prometheus.LabelValues(["foo", "bar"]) |
|
v2 = Prometheus.LabelValues(["foo", "bar"]) |
|
v3 = Prometheus.LabelValues(["foo", "baz"]) |
|
@test hash(v1) == hash(v2) |
|
@test hash(v1) != hash(v3) |
|
@test v1 == v2 |
|
@test v1 != v3 |
|
@test isequal(v1, v2) |
|
@test !isequal(v1, v3) |
|
end |
|
|
|
@testset "Prometheus.Family{$(Collector)}" for Collector in (Prometheus.Counter, Prometheus.Gauge) |
|
# Constructors and implicit registration |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
c = Prometheus.Family{Collector}( |
|
"http_requests", "Number of HTTP requests.", |
|
["endpoint", "status_code"], |
|
) |
|
@test c in Prometheus.DEFAULT_REGISTRY.collectors |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Family{Collector}( |
|
r, "http_requests", "Number of HTTP requests.", |
|
["endpoint", "status_code"], |
|
) |
|
@test c in r.collectors |
|
@test length(c.children) == 0 |
|
# Prometheus.labels(...), Prometheus.remove(...), Prometheus.clear() |
|
l1 = ["/foo/", "200"] |
|
l2 = ["/bar/", "404"] |
|
@test Prometheus.labels(c, l1) === Prometheus.labels(c, l1) |
|
@test Prometheus.labels(c, l2) === Prometheus.labels(c, l2) |
|
@test length(c.children) == 2 |
|
@test Prometheus.labels(c, l1).value == 0 |
|
@test Prometheus.labels(c, l2).value == 0 |
|
Prometheus.remove(c, l1) |
|
@test length(c.children) == 1 |
|
Prometheus.clear(c) |
|
@test length(c.children) == 0 |
|
# Prometheus.inc(...) |
|
Prometheus.inc(Prometheus.labels(c, l1)) |
|
Prometheus.inc(Prometheus.labels(c, l2)) |
|
@test Prometheus.labels(c, l1).value == 1 |
|
@test Prometheus.labels(c, l2).value == 1 |
|
Prometheus.inc(Prometheus.labels(c, l1), 2) |
|
Prometheus.inc(Prometheus.labels(c, l2), 2) |
|
@test Prometheus.labels(c, l1).value == 3 |
|
@test Prometheus.labels(c, l2).value == 3 |
|
# Prometheus.collect(...) |
|
metrics = Prometheus.collect(c) |
|
@test length(metrics) == 1 |
|
metric = metrics[1] |
|
@test metric.metric_name == c.metric_name |
|
@test metric.help == c.help |
|
@test length(metric.samples) == 2 |
|
s1, s2 = metric.samples[1], metric.samples[2] |
|
@test s1.labels.labelvalues == ["/bar/", "404"] |
|
@test s2.labels.labelvalues == ["/foo/", "200"] |
|
@test s1.value == 3 |
|
@test s2.value == 3 |
|
# Prometheus.expose_metric(...) |
|
type = Collector === Prometheus.Counter ? "counter" : "gauge" |
|
@test sprint(Prometheus.expose_metric, metric) == |
|
sprint(Prometheus.expose_io, r) == |
|
""" |
|
# HELP http_requests Number of HTTP requests. |
|
# TYPE http_requests $(type) |
|
http_requests{endpoint="/bar/",status_code="404"} 3 |
|
http_requests{endpoint="/foo/",status_code="200"} 3 |
|
""" |
|
end |
|
|
|
@testset "Prometheus.Family{Summary}" begin |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.Family{Prometheus.Summary}( |
|
r, "http_request_time", "Time to process requests.", |
|
["endpoint", "status_code"], |
|
) |
|
@test c in r.collectors |
|
@test length(c.children) == 0 |
|
# Prometheus.inc(...) |
|
l1 = ["/foo/", "200"] |
|
l2 = ["/bar/", "404"] |
|
@test Prometheus.labels(c, l1) === Prometheus.labels(c, l1) |
|
@test Prometheus.labels(c, l2) === Prometheus.labels(c, l2) |
|
@test length(c.children) == 2 |
|
@test Prometheus.labels(c, l1)._count == 0 |
|
@test Prometheus.labels(c, l1)._sum == 0 |
|
@test Prometheus.labels(c, l2)._count == 0 |
|
@test Prometheus.labels(c, l2)._sum == 0 |
|
Prometheus.observe(Prometheus.labels(c, l1), 1.2) |
|
Prometheus.observe(Prometheus.labels(c, l2), 2.1) |
|
@test Prometheus.labels(c, l1)._count == 1 |
|
@test Prometheus.labels(c, l1)._sum == 1.2 |
|
@test Prometheus.labels(c, l2)._count == 1 |
|
@test Prometheus.labels(c, l2)._sum == 2.1 |
|
Prometheus.observe(Prometheus.labels(c, l1), 3.4) |
|
Prometheus.observe(Prometheus.labels(c, l2), 4.3) |
|
@test Prometheus.labels(c, l1)._count == 2 |
|
@test Prometheus.labels(c, l1)._sum == 4.6 |
|
@test Prometheus.labels(c, l2)._count == 2 |
|
@test Prometheus.labels(c, l2)._sum == 6.4 |
|
# Prometheus.collect(...) |
|
metrics = Prometheus.collect(c) |
|
@test length(metrics) == 1 |
|
metric = metrics[1] |
|
@test metric.metric_name == c.metric_name |
|
@test metric.help == c.help |
|
@test length(metric.samples) == 4 |
|
s1, s2, s3, s4 = metric.samples |
|
@test s1.labels.labelvalues == s2.labels.labelvalues == ["/bar/", "404"] |
|
@test s3.labels.labelvalues == s4.labels.labelvalues == ["/foo/", "200"] |
|
@test s1.value == 2 # _count |
|
@test s2.value == 6.4 # _sum |
|
@test s3.value == 2 # _count |
|
@test s4.value == 4.6 # _sum |
|
# Prometheus.expose_metric(...) |
|
@test sprint(Prometheus.expose_metric, metric) == |
|
sprint(Prometheus.expose_io, r) == |
|
""" |
|
# HELP http_request_time Time to process requests. |
|
# TYPE http_request_time summary |
|
http_request_time_count{endpoint="/bar/",status_code="404"} 2 |
|
http_request_time_sum{endpoint="/bar/",status_code="404"} 6.4 |
|
http_request_time_count{endpoint="/foo/",status_code="200"} 2 |
|
http_request_time_sum{endpoint="/foo/",status_code="200"} 4.6 |
|
""" |
|
end |
|
|
|
@testset "Prometheus.GCCollector" begin |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.GCCollector(; registry=r) |
|
@test c in r.collectors |
|
# Record before and after stats and test that the metrics are in between |
|
old_stats = Base.gc_num() |
|
x = zeros(1024^2); x = nothing; GC.gc(); GC.gc() |
|
metrics = Prometheus.collect(c) |
|
x = zeros(1024^2); x = nothing; GC.gc(); GC.gc() |
|
new_stats = Base.gc_num() |
|
@test length(metrics) == 6 |
|
gc_alloc_total = metrics[findfirst(x -> x.metric_name == "gc_alloc_total", metrics)] |
|
@test old_stats.bigalloc <= gc_alloc_total.samples[1].value <= new_stats.bigalloc |
|
@test old_stats.malloc <= gc_alloc_total.samples[2].value <= new_stats.malloc |
|
@test old_stats.poolalloc <= gc_alloc_total.samples[3].value <= new_stats.poolalloc |
|
@test old_stats.realloc <= gc_alloc_total.samples[4].value <= new_stats.realloc |
|
gc_free_total = metrics[findfirst(x -> x.metric_name == "gc_free_total", metrics)] |
|
@test old_stats.freecall <= gc_free_total.samples.value <= new_stats.freecall |
|
gc_alloc_bytes_total = metrics[findfirst(x -> x.metric_name == "gc_alloc_bytes_total", metrics)] |
|
@test Base.gc_total_bytes(old_stats) <= gc_alloc_bytes_total.samples.value <= Base.gc_total_bytes(new_stats) |
|
gc_seconds_total = metrics[findfirst(x -> x.metric_name == "gc_seconds_total", metrics)] |
|
@test old_stats.total_time / 10^9 <= gc_seconds_total.samples.value <= new_stats.total_time / 10^9 |
|
# Prometheus.expose_metric(...) |
|
str = sprint(Prometheus.expose_metric, gc_alloc_total) |
|
@test occursin( |
|
r""" |
|
# HELP gc_alloc_total Total number of allocations \(calls to malloc, realloc, etc\) |
|
# TYPE gc_alloc_total counter |
|
gc_alloc_total{type="bigalloc"} \d+ |
|
gc_alloc_total{type="malloc"} \d+ |
|
gc_alloc_total{type="poolalloc"} \d+ |
|
gc_alloc_total{type="realloc"} \d+ |
|
""", |
|
sprint(Prometheus.expose_metric, gc_alloc_total), |
|
) |
|
end |
|
|
|
@testset "Prometheus.ProcessCollector" begin |
|
r = Prometheus.CollectorRegistry() |
|
c = Prometheus.ProcessCollector(r) |
|
@test c in r.collectors |
|
metrics = Prometheus.collect(c) |
|
procfs_available = c.system_boot_time > 0 |
|
if procfs_available |
|
# Prometheus.expose_metric(...) |
|
str = sprint(Prometheus.expose_io, r) |
|
@test occursin( |
|
r""" |
|
# HELP process_cpu_seconds_total Total CPU time \(user and system mode\) in seconds. |
|
# TYPE process_cpu_seconds_total counter |
|
process_cpu_seconds_total{mode="system"} [0-9\.]+ |
|
process_cpu_seconds_total{mode="user"} [0-9\.]+ |
|
# HELP process_io_rchar_bytes_total Total number of bytes read in bytes \(rchar from /proc/\[pid\]/io\). |
|
# TYPE process_io_rchar_bytes_total counter |
|
process_io_rchar_bytes_total \d+ |
|
# HELP process_io_read_bytes_total Total number of bytes read from the file system \(read_bytes from /proc/\[pid\]/io\). |
|
# TYPE process_io_read_bytes_total counter |
|
process_io_read_bytes_total \d+ |
|
# HELP process_io_syscr_total Total number of read I/O operations \(syscalls\) \(syscr from /proc/\[pid\]/io\). |
|
# TYPE process_io_syscr_total counter |
|
process_io_syscr_total \d+ |
|
# HELP process_io_syscw_total Total number of write I/O operations \(syscalls\) \(syscw from /proc/\[pid\]/io\). |
|
# TYPE process_io_syscw_total counter |
|
process_io_syscw_total \d+ |
|
# HELP process_io_wchar_bytes_total Total number of bytes written in bytes \(wchar from /proc/\[pid\]/io\). |
|
# TYPE process_io_wchar_bytes_total counter |
|
process_io_wchar_bytes_total \d+ |
|
# HELP process_io_write_bytes_total Total number of bytes written to the file system \(write_bytes from /proc/\[pid\]/io\). |
|
# TYPE process_io_write_bytes_total counter |
|
process_io_write_bytes_total \d+ |
|
# HELP process_open_fds Number of open file descriptors. |
|
# TYPE process_open_fds gauge |
|
process_open_fds \d+ |
|
# HELP process_resident_memory_bytes Resident memory size \(RSS\) in bytes. |
|
# TYPE process_resident_memory_bytes gauge |
|
process_resident_memory_bytes \d+ |
|
# HELP process_start_time_seconds Start time since unix epoch in seconds. |
|
# TYPE process_start_time_seconds gauge |
|
process_start_time_seconds .* |
|
# HELP process_virtual_memory_bytes Virtual memory size in bytes. |
|
# TYPE process_virtual_memory_bytes gauge |
|
process_virtual_memory_bytes \d+ |
|
""", |
|
sprint(Prometheus.expose_io, r), |
|
) |
|
else |
|
@test isempty(metrics) |
|
end |
|
# Test that pid function works |
|
procc = Prometheus.ProcessCollector(nothing, () -> getpid()) |
|
metrics = Prometheus.collect(procc) |
|
if procfs_available |
|
@test length(metrics) > 0 |
|
else |
|
@test length(metrics) == 0 |
|
end |
|
if procfs_available |
|
# Not a pid |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
procc = Prometheus.ProcessCollector(() -> "notapid") |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
metrics = @test_logs (:error, r"/proc/notapid/ does not exist") Prometheus.collect(procc) |
|
@test length(metrics) == 0 |
|
# Pid function error |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
procc = Prometheus.ProcessCollector(() -> error()) |
|
metrics = @test_logs (:error, r"pid from the lambda") Prometheus.collect(procc) |
|
@test length(metrics) == 0 |
|
end |
|
end |
|
|
|
@testset "Prometheus.expose(::Union{String, IO})" begin |
|
r = Prometheus.DEFAULT_REGISTRY |
|
empty!(r.collectors) |
|
Prometheus.inc(Prometheus.Counter("prom_counter", "Counting things"; registry=r)) |
|
Prometheus.set(Prometheus.Gauge("prom_gauge", "Gauging things"; registry=r), 1.2) |
|
mktempdir() do dir |
|
default = joinpath(dir, "default.prom") |
|
Prometheus.expose(default) |
|
reg = joinpath(dir, "reg.prom") |
|
Prometheus.expose(reg, r) |
|
default_io = IOBuffer() |
|
Prometheus.expose(default_io) |
|
reg_io = IOBuffer() |
|
Prometheus.expose(reg_io, r) |
|
@test read(default, String) == |
|
read(reg, String) == |
|
String(take!(default_io)) == |
|
String(take!(reg_io)) == |
|
""" |
|
# HELP prom_counter Counting things |
|
# TYPE prom_counter counter |
|
prom_counter 1 |
|
# HELP prom_gauge Gauging things |
|
# TYPE prom_gauge gauge |
|
prom_gauge 1.2 |
|
""" |
|
end |
|
end |
|
|
|
@testset "Prometheus.expose(::HTTP.Stream)" begin |
|
empty!(Prometheus.DEFAULT_REGISTRY.collectors) |
|
Prometheus.inc(Prometheus.Counter("prom_counter", "Counting things")) |
|
Prometheus.set(Prometheus.Gauge("prom_gauge", "Gauging things"), 1.2) |
|
iob = IOBuffer() |
|
Prometheus.expose(iob) |
|
reference_output = String(take!(iob)) |
|
# Spin up the server |
|
server = HTTP.listen!(8123) do http |
|
if http.message.target == "/metrics/default" |
|
return Prometheus.expose(http) |
|
elseif http.message.target == "/metrics/reg" |
|
return Prometheus.expose(http, Prometheus.DEFAULT_REGISTRY) |
|
elseif http.message.target == "/metrics/nogzip" |
|
return Prometheus.expose(http; compress=false) |
|
else |
|
HTTP.setstatus(http, 404) |
|
HTTP.startwrite(http) |
|
end |
|
end |
|
# Normal requests |
|
r_default = HTTP.request("GET", "http://localhost:8123/metrics/default") |
|
r_ref = HTTP.request("GET", "http://localhost:8123/metrics/reg") |
|
@test String(r_default.body) == String(r_ref.body) == reference_output |
|
# HEAD |
|
@test isempty(HTTP.request("HEAD", "http://localhost:8123/metrics/default").body) |
|
# POST (no filtering in the server above) |
|
r_post = HTTP.request("POST", "http://localhost:8123/metrics/default") |
|
@test String(r_post.body) == reference_output |
|
# Bad URI |
|
r_bad = HTTP.request("GET", "http://localhost:8123"; status_exception=false) |
|
@test r_bad.status == 404 |
|
# Compression |
|
for enc in ("gzip", "br, compress, gzip", "br;q=1.0, gzip;q=0.8, *;q=0.1") |
|
r_gzip = HTTP.request( |
|
"GET", "http://localhost:8123/metrics/default", ["Accept-Encoding" => enc] |
|
) |
|
@test HTTP.header(r_gzip, "Content-Encoding") == "gzip" |
|
@test String(r_gzip.body) == reference_output # HTTP.jl decompresses gzip |
|
r_nogzip = HTTP.request( |
|
"GET", "http://localhost:8123/metrics/nogzip", ["Accept-Encoding" => enc] |
|
) |
|
@test HTTP.header(r_nogzip, "Content-Encoding") != "gzip" |
|
@test String(r_nogzip.body) == reference_output # HTTP.jl decompresses gzip |
|
end |
|
# Clean up |
|
close(server) |
|
wait(server) |
|
end |
|
|
|
@testset "Utilities" begin |
|
@test_throws Prometheus.PrometheusUnreachable Prometheus.unreachable() |
|
@test_throws Prometheus.PrometheusAssert Prometheus.@assert false |
|
@test_throws Prometheus.PrometheusUnreachable Prometheus.prometheus_type(Int) |
|
end
|
|
|