Add sensu_handler Ansible module

This provides a sensu_handler module in order to be able to dynamically
configure a Sensu handler.

test/integration/targets/sensu_handler/tasks/main.yml

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+- name: Creating a handler if the directory doesn't exist should work
+  sensu_handler:
+    name: "handler"
+    type: "pipe"
+    command: "/bin/bash"
+    state: "present"
+
+- name: Insert junk JSON in a handlers file
+  lineinfile:
+    state: "present"
+    create: "yes"
+    path: "/etc/sensu/conf.d/handlers/handler.json"
+    line: "{'foo' = bar}"
+
+- name: Configure a handler with an existing invalid file
+  sensu_handler:
+    name: "handler"
+    type: "pipe"
+    command: "/bin/bash"
+    state: "present"
+  register: handler
+
+- name: Configure a handler (again)
+  sensu_handler:
+    name: "handler"
+    type: "pipe"
+    command: "/bin/bash"
+    state: "present"
+  register: handler_twice
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Assert that handler data was set successfully and properly
+  assert:
+    that:
+      - "handler | success"
+      - "handler | changed"
+      - "handler_twice | success"
+      - "not handler_twice | changed"
+      - "handler_stat.stat.exists == true"
+      - "handler['name'] == 'handler'"
+      - "handler['file'] == '/etc/sensu/conf.d/handlers/handler.json'"
+      - "handler['config']['type'] == 'pipe'"
+      - "handler['config']['command'] == '/bin/bash'"
+      - "handler['config']['timeout'] == 10"
+      - "handler['config']['handle_flapping'] == false"
+      - "handler['config']['handle_silenced'] == false"
+
+- name: Assert that the handler configuration file is actually configured properly
+  vars:
+    config: "{{ lookup('file', handler['file']) | from_json }}"
+  assert:
+    that:
+      - "'handler' in config['handlers']"
+      - "config['handlers']['handler']['type'] == 'pipe'"
+      - "config['handlers']['handler']['command'] == '/bin/bash'"
+      - "config['handlers']['handler']['timeout'] == 10"
+      - "config['handlers']['handler']['handle_flapping'] == false"
+      - "config['handlers']['handler']['handle_silenced'] == false"
+
+- name: Delete Sensu handler configuration
+  sensu_handler:
+    name: "handler"
+    state: "absent"
+  register: handler_delete
+
+- name: Delete Sensu handler configuration (again)
+  sensu_handler:
+    name: "handler"
+    state: "absent"
+  register: handler_delete_twice
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Assert that handler deletion was successful
+  assert:
+    that:
+      - "handler_delete | success"
+      - "handler_delete | changed"
+      - "handler_delete_twice | success"
+      - "not handler_delete_twice | changed"
+      - "handler_stat.stat.exists == false"
+
+- name: Configuring a handler without a name should fail
+  sensu_handler:
+    type: "pipe"
+    command: "/bin/bash"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler without a name fails
+  assert:
+    that:
+      - failure | failed
+      - "'required arguments: name' in failure['msg']"
+
+- name: Configuring a handler without a type should fail
+  sensu_handler:
+    name: "pipe"
+    command: "/bin/bash"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler without a type fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: type' in failure['msg']"
+
+- include: pipe.yml
+- include: tcp.yml
+- include: udp.yml
+- include: set.yml
+- include: transport.yml

test/integration/targets/sensu_handler/tasks/pipe.yml

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+# Note: Pipe handlers are also tested and used as part of basic main.yml coverage
+- name: Configuring a handler with missing pipe parameters should fail
+  sensu_handler:
+    name: "pipe"
+    type: "pipe"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler with missing pipe parameters fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: command' in failure['msg']"
+
+- name: Configure a handler with pipe parameters
+  sensu_handler:
+    name: "pipe"
+    type: "pipe"
+    command: "/bin/bash"
+  register: handler

test/integration/targets/sensu_handler/tasks/set.yml

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+- name: Configuring a handler with missing set parameters should fail
+  sensu_handler:
+    name: "set"
+    type: "set"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler with missing set parameters fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: handlers' in failure['msg']"
+
+- name: Configure a set handler
+  sensu_handler:
+    name: "set"
+    type: "set"
+    handlers:
+      - anotherhandler
+  register: handler
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Validate set handler return data
+  assert:
+    that:
+      - "handler | success"
+      - "handler | changed"
+      - "handler_stat.stat.exists == true"
+      - "handler['name'] == 'set'"
+      - "handler['file'] == '/etc/sensu/conf.d/handlers/set.json'"
+      - "handler['config']['type'] == 'set'"
+      - "'anotherhandler' in handler['config']['handlers']"
+      - "handler['config']['handle_flapping'] == false"
+      - "handler['config']['handle_silenced'] == false"
+
+- name: Assert that the handler configuration file is actually configured properly
+  vars:
+    config: "{{ lookup('file', handler['file']) | from_json }}"
+  assert:
+    that:
+      - "'set' in config['handlers']"
+      - "config['handlers']['set']['type'] == 'set'"
+      - "'anotherhandler' in config['handlers']['set']['handlers']"
+      - "config['handlers']['set']['handle_flapping'] == false"
+      - "config['handlers']['set']['handle_silenced'] == false"

test/integration/targets/sensu_handler/tasks/tcp.yml

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+- name: Configuring a handler with missing tcp parameters should fail
+  sensu_handler:
+    name: "tcp"
+    type: "tcp"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler with missing tcp parameters fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: socket' in failure['msg']"
+
+- name: Configure a tcp handler
+  sensu_handler:
+    name: "tcp"
+    type: "tcp"
+    socket:
+      host: 127.0.0.1
+      port: 8000
+  register: handler
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Validate tcp handler return data
+  assert:
+    that:
+      - "handler | success"
+      - "handler | changed"
+      - "handler_stat.stat.exists == true"
+      - "handler['name'] == 'tcp'"
+      - "handler['file'] == '/etc/sensu/conf.d/handlers/tcp.json'"
+      - "handler['config']['type'] == 'tcp'"
+      - "handler['config']['socket']['host'] == '127.0.0.1'"
+      - "handler['config']['socket']['port'] == 8000"
+      - "handler['config']['handle_flapping'] == false"
+      - "handler['config']['handle_silenced'] == false"
+
+- name: Assert that the handler configuration file is actually configured properly
+  vars:
+    config: "{{ lookup('file', handler['file']) | from_json }}"
+  assert:
+    that:
+      - "'tcp' in config['handlers']"
+      - "config['handlers']['tcp']['type'] == 'tcp'"
+      - "config['handlers']['tcp']['socket']['host'] == '127.0.0.1'"
+      - "config['handlers']['tcp']['socket']['port'] == 8000"
+      - "config['handlers']['tcp']['handle_flapping'] == false"
+      - "config['handlers']['tcp']['handle_silenced'] == false"

test/integration/targets/sensu_handler/tasks/transport.yml

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+- name: Configuring a handler with missing transport parameters should fail
+  sensu_handler:
+    name: "transport"
+    type: "transport"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler with missing transport parameters fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: pipe' in failure['msg']"
+
+- name: Configure a transport handler
+  sensu_handler:
+    name: "transport"
+    type: "transport"
+    pipe:
+      type: "topic"
+      name: "transport_handler"
+  register: handler
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Validate transport handler return data
+  assert:
+    that:
+      - "handler | success"
+      - "handler | changed"
+      - "handler_stat.stat.exists == true"
+      - "handler['name'] == 'transport'"
+      - "handler['file'] == '/etc/sensu/conf.d/handlers/transport.json'"
+      - "handler['config']['type'] == 'transport'"
+      - "handler['config']['pipe']['type'] == 'topic'"
+      - "handler['config']['pipe']['name'] == 'transport_handler'"
+      - "handler['config']['handle_flapping'] == false"
+      - "handler['config']['handle_silenced'] == false"
+
+- name: Assert that the handler configuration file is actually configured properly
+  vars:
+    config: "{{ lookup('file', handler['file']) | from_json }}"
+  assert:
+    that:
+      - "'transport' in config['handlers']"
+      - "config['handlers']['transport']['type'] == 'transport'"
+      - "config['handlers']['transport']['pipe']['type'] == 'topic'"
+      - "config['handlers']['transport']['pipe']['name'] == 'transport_handler'"
+      - "config['handlers']['transport']['handle_flapping'] == false"
+      - "config['handlers']['transport']['handle_silenced'] == false"

test/integration/targets/sensu_handler/tasks/udp.yml

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+- name: Configuring a handler with missing udp parameters should fail
+  sensu_handler:
+    name: "udp"
+    type: "udp"
+  register: failure
+  ignore_errors: true
+
+- name: Assert that configuring a handler with missing udp parameters fails
+  assert:
+    that:
+      - failure | failed
+      - "'the following are missing: socket' in failure['msg']"
+
+- name: Configure a udp handler
+  sensu_handler:
+    name: "udp"
+    type: "udp"
+    socket:
+      host: 127.0.0.1
+      port: 8000
+  register: handler
+
+- name: Retrieve configuration file stat
+  stat:
+    path: "{{ handler['file'] }}"
+  register: handler_stat
+
+- name: Validate udp handler return data
+  assert:
+    that:
+      - "handler | success"
+      - "handler | changed"
+      - "handler_stat.stat.exists == true"
+      - "handler['name'] == 'udp'"
+      - "handler['file'] == '/etc/sensu/conf.d/handlers/udp.json'"
+      - "handler['config']['type'] == 'udp'"
+      - "handler['config']['socket']['host'] == '127.0.0.1'"
+      - "handler['config']['socket']['port'] == 8000"
+      - "handler['config']['handle_flapping'] == false"
+      - "handler['config']['handle_silenced'] == false"
+
+- name: Assert that the handler configuration file is actually configured properly
+  vars:
+    config: "{{ lookup('file', handler['file']) | from_json }}"
+  assert:
+    that:
+      - "'udp' in config['handlers']"
+      - "config['handlers']['udp']['type'] == 'udp'"
+      - "config['handlers']['udp']['socket']['host'] == '127.0.0.1'"
+      - "config['handlers']['udp']['socket']['port'] == 8000"
+      - "config['handlers']['udp']['handle_flapping'] == false"
+      - "config['handlers']['udp']['handle_silenced'] == false"