Issue #8: Added Linux Connector to Community repository

src/main/connector/system/Linux/Linux.yaml

@@ -0,0 +1,178 @@
+extends:
+- ../System/System
+metrics:
+  system.service.status:
+    description: Service Status
+    type:
+      stateSet:
+        - running
+        - dead
+        - exited
+connector:
+  displayName: LinuxOS
+  platform: Any platform with LinuxOS
+  reliesOn: Linux OsCommands
+  information: Gives OS specific information and metrics
+  detection:
+    connectionTypes:
+    - remote
+    - local
+    appliesTo:
+    - linux
+    criteria:
+    - type: osCommand
+      commandLine: /usr/bin/uname -o
+      expectedResult: GNU/Linux
+      errorMessage: Not a valid Linux host.
+monitors:
+  cpu:
+    simple:
+      type: multiInstance
+      sources:
+        source(1):
+          # cpuId;user;nice;system;idle;iowait
+          type: osCommand
+          commandLine: /usr/bin/cat /proc/stat
+          computes:
+          - type: awk
+            script: |
+              /cpu[0-9]/ {
+                sub("cpu","");
+                print $1 ";" $2 / 1000 ";" $3 / 1000 ";" $4 / 1000 ";" $5 / 1000 ";" $6 / 1000
+              }
+      mapping:
+        source: ${source::monitors.cpu.simple.sources.source(1)}
+        attributes:
+          id: $1
+          name: ${awk::sprintf("%s %s", "cpu", $1)}
+          system.cpu.logical_number: $1
+        metrics:
+          system.cpu.utilization{system.cpu.state="user"}: rate($2)
+          system.cpu.utilization{system.cpu.state="nice"}: rate($3)
+          system.cpu.utilization{system.cpu.state="system"}: rate($4)
+          system.cpu.utilization{system.cpu.state="idle"}: rate($5)
+          system.cpu.utilization{system.cpu.state="io_wait"}: rate($6)
+          system.cpu.time{system.cpu.state="user"}: $2
+          system.cpu.time{system.cpu.state="nice"}: $3
+          system.cpu.time{system.cpu.state="system"}: $4
+          system.cpu.time{system.cpu.state="idle"}: $5
+          system.cpu.time{system.cpu.state="io_wait"}: $6
+  memory:
+    simple:
+      sources:
+        source(1):
+          # memTotal;memFree;memUsed;memBuffers;memCached;memFreeUtilization;memUsedUtilization;memBuffersUtilization;memCachedUtilization
+          type: osCommand
+          commandLine: cat /proc/meminfo
+          computes:
+          - type: awk
+            script: ${file::memory.awk}
+      mapping:
+        source: ${source::monitors.memory.simple.sources.source(1)}
+        attributes:
+          id: memory_usage
+          system.memory.limit: $1
+        metrics:
+          system.memory.usage{system.memory.usage="free"}: $2
+          system.memory.usage{system.memory.usage="used"}: $3
+          system.memory.usage{system.memory.usage="buffers"}: $4
+          system.memory.usage{system.memory.usage="cached"}: $5
+          system.memory.utilization{system.memory.usage="free"}: $6
+          system.memory.utilization{system.memory.usage="used"}: $7
+          system.memory.utilization{system.memory.usage="buffers"}: $8
+          system.memory.utilization{system.memory.usage="cached"}: $9
+  disk:
+    simple:
+      type: multiInstance
+      sources:
+        source(1):
+          # id;reads;readsMerged;readTime;writes;writesMerged;writeTime;ioTime
+          type: osCommand
+          commandLine: cat /proc/diskstats
+          selectColumns: 3,4,5,7,8,9,11,13
+          computes:
+          - type: divide
+            column: 2
+            value: 1000
+          - type: divide
+            column: 5
+            value: 1000
+          - type: divide
+            column: 8
+            value: 1000
+      mapping:
+        source: ${source::monitors.disk.simple.sources.source(1)}
+        attributes:
+          id: $1
+          system.disk.device: $1
+        metrics:
+          system.disk.operations{direction:read}: $2
+          system.disk.merged{direction:read}: $3
+          system.disk.operation_time{direction:read}: $4
+          system.disk.operations{direction:write}: $5
+          system.disk.merged{direction:write}: $6
+          system.disk.operation_time{direction:write}: $7
+          system.disk.io_time: $8
+  service:
+    simple:
+      type: multiInstance
+      sources:
+        source(1):
+          # serviceName;load;active;sub;description
+          type: osCommand
+          commandLine: /usr/bin/systemctl list-units --type=service --all
+          computes:
+          - type: awk
+            script: |
+              /\.service/ {
+                sub(/^[^[:alnum:]]+\s*/, "");
+                sub("\.service", "");
+                printf($1 ";" $2 ";" $3 ";" $4 ";")
+                for (i=5; i<=NF; i++) {
+                  printf("%s ", $i)
+                }
+                printf("\n")
+              }
+          - type: translate
+            column: 2
+            translationTable: ${translation::serviceLoadedTranslationTable}
+          - type: translate
+            column: 3
+            translationTable: ${translation::serviceActiveTranslationTable}
+      mapping:
+        source: ${source::monitors.service.simple.sources.source(1)}
+        attributes:
+          id: $1
+          description: $5
+        metrics:
+          system.service.status{state="loaded"}: $2
+          system.service.status{state="active"}: $3
+          system.service.status: $4
+  filesystem:
+    simple:
+      type: multiInstance
+      sources:
+        source(1):
+          # filesystem;mountpoint;type;used;available
+          type: osCommand
+          commandLine: /usr/bin/df -B1 --output=source,target,fstype,used,avail
+          computes:
+          - type: awk
+            script: NR > 1 {print $1 "(" $2 ")" ";" $2 ";" $3 ";" $4 ";" $5}
+      mapping:
+        source: ${source::monitors.filesystem.simple.sources.source(1)}
+        attributes:
+          id: $1
+          system.filesystem.device: $1
+          system.filesystem.mountpoint: $2
+          system.filesystem.type: $3
+        metrics:
+          system.filesystem.usage{system.filesystem.state=used}: $4
+          system.filesystem.usage{system.filesystem.state=free}: $5
+translations:
+  serviceLoadedTranslationTable:
+    not-found: "0"
+    loaded: "1"
+  serviceActiveTranslationTable:
+    inactive: "0"
+    active: "1"

src/main/connector/system/Linux/memory.awk

@@ -0,0 +1,24 @@
+/MemTotal/ {
+    memTotal = $2 * 1024
+}
+
+/MemFree/ {
+    memFree = $2 * 1024
+    memFreeUtilization = memFree / memTotal
+    memUsed = memTotal - memFree
+    memUsedUtilization = memUsed / memTotal
+}
+
+/Buffers/ {
+    memBuffers = $2 * 1024
+    memBuffersUtilization = memBuffers / memTotal
+}
+
+/Cached/ {
+    memCached = $2 * 1024
+    memCachedUtilization = memCached / memTotal
+}
+
+END {
+    printf("%s;%s;%s;%s;%s;%s;%s;%s;%s\n", memTotal, memFree, memUsed, memBuffers, memCached, memFreeUtilization, memUsedUtilization, memBuffersUtilization, memCachedUtilization)
+}

src/main/connector/system/System/System.yaml

@@ -0,0 +1,125 @@
+metrics:
+  system.cpu.time:
+    description: Seconds each logical CPU spent on each mode
+    type: Counter
+    unit: s
+  system.cpu.utilization:
+    description: Difference in system.cpu.time since the last measurement, divided by the elapsed time and number of logical CPUs
+    type: Gauge
+    unit: "1"
+  system.cpu.physical.count:
+    description: Reports the number of actual physical processor cores on the hardware
+    type: UpDownCounter
+    unit: "{cpu}"
+  system.cpu.logical.count:
+    description: Reports the number of logical (virtual) processor cores created by the operating system to manage multitasking
+    type: UpDownCounter
+    unit: "{cpu}"
+  system.cpu.frequency:
+    description: Reports the current frequency of the CPU in Hz
+    type: Gauge
+    unit: "{Hz}"
+  system.memory.usage:
+    description: Reports memory in use by state
+    type: UpDownCounter
+    unit: By
+  system.memory.limit:
+    description: Total memory available in the system
+    type: UpDownCounter
+    unit: By
+  system.memory.utilization:
+    description: Memory utilization for each possible state
+    type: Gauge
+    unit: "1"
+  system.paging.usage:
+    description: Unix swap or Windows pagefile usage
+    type: UpDownCounter
+    unit: By
+  system.paging.utilization:
+    description: Memory paging utilization for each possible state
+    type: Gauge
+    unit: "1"
+  system.paging.faults:
+    description: Count of major and minor page faults
+    type: Counter
+    unit: "{fault}"
+  system.paging.operations:
+    description: Count of page-in (swap-in) and page-out (swap-out) operations
+    type: Counter
+    unit: "{operation}"
+  system.disk.io:
+    description: Disk I/O count
+    type: Counter
+    unit: By
+  system.disk.operations:
+    description: Count of read and write operations
+    type: Counter
+    unit: "{operation}"
+  system.disk.io_time:
+    description: Time disk spent activated
+    type: Counter
+    unit: s
+  system.disk.operation_time:
+    description: Sum of the time each operation took to complete
+    type: Counter
+    unit: s
+  system.disk.merged:
+    description: Count of merged read and write operations
+    type: Counter
+    unit: "{operation}"
+  system.disk.io_transactions_per_seconds:
+    description: Disk transactions per seconds
+    type: Gauge
+    unit: tps
+  system.disk.io_average_size:
+    description: Average size in sectors of requests
+    type: Gauge
+    unit: "{sectors}"
+  system.disk.io_average_queue:
+    description: Average number of requests in the queue waiting to be served
+    type: Gauge
+    unit: "{requests}"
+  system.disk.io_average_wait:
+    description: Average time taken for I/O requests to be served
+    type: Gauge
+    unit: s
+  system.filesystem.usage:
+    description: Filesystem usage
+    type: UpDownCounter
+    unit: By
+  system.filesystem.utilization:
+    description: Filesystem utilization for each possible state
+    type: Gauge
+    unit: "1"
+  system.network.dropped:
+    description: Count of dropped packets
+    type: Counter
+    unit: "{packet}"
+  system.network.packets:
+    description: Count of transmitted and received packets
+    type: Counter
+    unit: "{packet}"
+  system.network.errors:
+    description: Count of network errors detected
+    type: Counter
+    unit: "{error}"
+  system.network.io:
+    description: Network I/O count
+    type: Counter
+    unit: By
+  system.network.connections:
+    description: Count of network connections
+    type: UpDownCounter
+    unit: "{connection}"
+  system.processes.count:
+    description: Total number of processes in each state
+    type: UpDownCounter
+    unit: "{process}"
+  system.processes.created:
+    description: Total number of processes created over uptime of the host
+    type: Counter
+    unit: "{process}"
+  system.linux.memory.available:
+    description: An estimate of how much memory is available for starting new applications, without causing swapping
+    type: UpDownCounter
+    unit: By