122 lines
3.5 KiB
Go
122 lines
3.5 KiB
Go
package bcache
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import (
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"io/ioutil"
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"os"
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"testing"
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"github.com/influxdata/telegraf/testutil"
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"github.com/stretchr/testify/require"
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)
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const (
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dirty_data = "1.5G"
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bypassed = "4.7T"
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cache_bypass_hits = "146155333"
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cache_bypass_misses = "0"
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cache_hit_ratio = "90"
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cache_hits = "511469583"
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cache_miss_collisions = "157567"
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cache_misses = "50616331"
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cache_readaheads = "2"
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)
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var (
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testBcachePath = os.TempDir() + "/telegraf/sys/fs/bcache"
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testBcacheUuidPath = testBcachePath + "/663955a3-765a-4737-a9fd-8250a7a78411"
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testBcacheDevPath = os.TempDir() + "/telegraf/sys/devices/virtual/block/bcache0"
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testBcacheBackingDevPath = os.TempDir() + "/telegraf/sys/devices/virtual/block/md10"
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)
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func TestBcacheGeneratesMetrics(t *testing.T) {
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err := os.MkdirAll(testBcacheUuidPath, 0755)
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require.NoError(t, err)
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err = os.MkdirAll(testBcacheDevPath, 0755)
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require.NoError(t, err)
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err = os.MkdirAll(testBcacheBackingDevPath+"/bcache", 0755)
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require.NoError(t, err)
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err = os.Symlink(testBcacheBackingDevPath+"/bcache", testBcacheUuidPath+"/bdev0")
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require.NoError(t, err)
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err = os.Symlink(testBcacheDevPath, testBcacheUuidPath+"/bdev0/dev")
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require.NoError(t, err)
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err = os.MkdirAll(testBcacheUuidPath+"/bdev0/stats_total", 0755)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/dirty_data",
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[]byte(dirty_data), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/bypassed",
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[]byte(bypassed), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_bypass_hits",
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[]byte(cache_bypass_hits), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_bypass_misses",
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[]byte(cache_bypass_misses), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_hit_ratio",
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[]byte(cache_hit_ratio), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_hits",
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[]byte(cache_hits), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_miss_collisions",
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[]byte(cache_miss_collisions), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_misses",
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[]byte(cache_misses), 0644)
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require.NoError(t, err)
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err = ioutil.WriteFile(testBcacheUuidPath+"/bdev0/stats_total/cache_readaheads",
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[]byte(cache_readaheads), 0644)
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require.NoError(t, err)
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fields := map[string]interface{}{
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"dirty_data": uint64(1610612736),
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"bypassed": uint64(5167704440832),
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"cache_bypass_hits": uint64(146155333),
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"cache_bypass_misses": uint64(0),
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"cache_hit_ratio": uint64(90),
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"cache_hits": uint64(511469583),
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"cache_miss_collisions": uint64(157567),
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"cache_misses": uint64(50616331),
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"cache_readaheads": uint64(2),
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}
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tags := map[string]string{
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"backing_dev": "md10",
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"bcache_dev": "bcache0",
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}
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var acc testutil.Accumulator
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// all devs
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b := &Bcache{BcachePath: testBcachePath}
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err = b.Gather(&acc)
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require.NoError(t, err)
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acc.AssertContainsTaggedFields(t, "bcache", fields, tags)
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// one exist dev
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b = &Bcache{BcachePath: testBcachePath, BcacheDevs: []string{"bcache0"}}
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err = b.Gather(&acc)
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require.NoError(t, err)
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acc.AssertContainsTaggedFields(t, "bcache", fields, tags)
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err = os.RemoveAll(os.TempDir() + "/telegraf")
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require.NoError(t, err)
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}
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