Initial VES for DANOS vRouter

1. Create vpp_measurement_reporter that use DANOS configd query
   to retrieve statistics and libevel to transmit
2. Copy VES evel library to build a debian package under
   vpp_measurement_report
3. Add debian files to create a vpp_measurement_reporter + libevel
   debian package
4. Add debian install and systemctl start files
5. Add instruction to build VES reporter debian package (that will
   include libevel.so)
6. Add instructions to build DANOS ISO with VES reporter debian
   package and creating glance image

Issue-ID: INT-1566
Change-Id: If18f16525f07f1b6bae0fc105e0452263b4bf661
Signed-off-by: Brian Freeman <bf1936@att.com>

1 files changed, 214 insertions, 0 deletions

diff --git a/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/evel_throttle.h b/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/evel_throttle.h
new file mode 100644
index 00000000..c97b3c37
--- /dev/null
+++ b/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/evel_throttle.h
@@ -0,0 +1,214 @@
+/*************************************************************************//**
+ *
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and 
+ * limitations under the License.
+ *
+ ****************************************************************************/
+/**************************************************************************//**
+ * @file
+ * EVEL throttle definitions.
+ *
+ * These are internal definitions related to throttling specicications, which
+ * are required within the library but are not intended for external
+ * consumption.
+ *
+ ****************************************************************************/
+
+#ifndef EVEL_THROTTLE_INCLUDED
+#define EVEL_THROTTLE_INCLUDED
+
+#include "evel_internal.h"
+#include "jsmn.h"
+
+/*****************************************************************************/
+/* Maximum depth of JSON response that we can handle.                        */
+/*****************************************************************************/
+#define EVEL_JSON_STACK_DEPTH           10
+
+/**************************************************************************//**
+ * Maximum number of tokens that we allow for in a JSON response.
+ *****************************************************************************/
+#define EVEL_MAX_RESPONSE_TOKENS        1024
+
+/**************************************************************************//**
+ * The nature of the next token that we are iterating through.  Within an
+ * object, we alternate between collecting keys and values.  Within an array,
+ * we only collect items.
+ *****************************************************************************/
+typedef enum {
+  EVEL_JSON_KEY,
+  EVEL_JSON_VALUE,
+  EVEL_JSON_ITEM
+} EVEL_JSON_STATE;
+
+/**************************************************************************//**
+ * States which we move through during JSON processing, tracking our way
+ * through the supported JSON structure.
+ *****************************************************************************/
+typedef enum
+{
+  /***************************************************************************/
+  /* Initial state.                                                          */
+  /***************************************************************************/
+  EVEL_JCS_START,
+
+  /***************************************************************************/
+  /* {"commandList": [                                                       */
+  /***************************************************************************/
+  EVEL_JCS_COMMAND_LIST,
+
+  /***************************************************************************/
+  /* {"commandList": [{                                                      */
+  /***************************************************************************/
+  EVEL_JCS_COMMAND_LIST_ENTRY,
+
+  /***************************************************************************/
+  /* {"commandList": [{"command": {                                          */
+  /***************************************************************************/
+  EVEL_JCS_COMMAND,
+
+  /***************************************************************************/
+  /* ... "eventDomainThrottleSpecification": {                               */
+  /***************************************************************************/
+  EVEL_JCS_SPEC,
+
+  /***************************************************************************/
+  /* ... "suppressedFieldNames": [                                           */
+  /***************************************************************************/
+  EVEL_JCS_FIELD_NAMES,
+
+  /***************************************************************************/
+  /* ... "suppressedNvPairsList": [                                          */
+  /***************************************************************************/
+  EVEL_JCS_PAIRS_LIST,
+
+  /***************************************************************************/
+  /* ... "suppressedNvPairsList": [{                                         */
+  /***************************************************************************/
+  EVEL_JCS_PAIRS_LIST_ENTRY,
+
+  /***************************************************************************/
+  /* ... "suppressedNvPairNames": [                                          */
+  /***************************************************************************/
+  EVEL_JCS_NV_PAIR_NAMES,
+
+  EVEL_JCS_MAX
+} EVEL_JSON_COMMAND_STATE;
+
+/**************************************************************************//**
+ * An entry in the JSON stack.
+ *****************************************************************************/
+typedef struct evel_json_stack_entry {
+
+  /***************************************************************************/
+  /* The number of elements required at this level.                          */
+  /***************************************************************************/
+  int num_required;
+
+  /***************************************************************************/
+  /* The number of elements collected at this level.                         */
+  /***************************************************************************/
+  int json_count;
+
+  /***************************************************************************/
+  /* The collection state at this level in the JSON stack.                   */
+  /***************************************************************************/
+  EVEL_JSON_STATE json_state;
+
+  /***************************************************************************/
+  /* The key being collected (if json_state is EVEL_JSON_VALUE), or NULL.    */
+  /***************************************************************************/
+  char * json_key;
+
+} EVEL_JSON_STACK_ENTRY;
+
+/**************************************************************************//**
+ * The JSON stack.
+ *****************************************************************************/
+typedef struct evel_json_stack {
+
+  /***************************************************************************/
+  /* The current position of the stack - starting at zero.                   */
+  /***************************************************************************/
+  int level;
+
+  /***************************************************************************/
+  /* The stack itself.                                                       */
+  /***************************************************************************/
+  EVEL_JSON_STACK_ENTRY entry[EVEL_JSON_STACK_DEPTH];
+
+  /***************************************************************************/
+  /* The underlying memory chunk.                                            */
+  /***************************************************************************/
+  const MEMORY_CHUNK * chunk;
+
+} EVEL_JSON_STACK;
+
+/**************************************************************************//**
+ * Initialize event throttling to the default state.
+ *
+ * Called from ::evel_initialize.
+ *****************************************************************************/
+void evel_throttle_initialize();
+
+/**************************************************************************//**
+ * Clean up event throttling.
+ *
+ * Called from ::evel_terminate.
+ *****************************************************************************/
+void evel_throttle_terminate();
+
+/**************************************************************************//**
+ * Handle a JSON response from the listener, as a list of tokens from JSMN.
+ *
+ * @param chunk         Memory chunk containing the JSON buffer.
+ * @param json_tokens   Array of tokens to handle.
+ * @param num_tokens    The number of tokens to handle.
+ * @param post          The memory chunk in which to place any resulting POST.
+ * @return true if the command was handled, false otherwise.
+ *****************************************************************************/
+bool evel_handle_command_list(const MEMORY_CHUNK * const chunk,
+                              const jsmntok_t * const json_tokens,
+                              const int num_tokens,
+                              MEMORY_CHUNK * const post);
+
+/**************************************************************************//**
+ * Return the ::EVEL_THROTTLE_SPEC for a given domain.
+ *
+ * @param domain        The domain for which to return state.
+ *****************************************************************************/
+EVEL_THROTTLE_SPEC * evel_get_throttle_spec(EVEL_EVENT_DOMAINS domain);
+
+/**************************************************************************//**
+ * Determine whether a field_name should be suppressed.
+ *
+ * @param throttle_spec Throttle specification for the domain being encoded.
+ * @param field_name    The field name to encoded or suppress.
+ * @return true if the field_name should be suppressed, false otherwise.
+ *****************************************************************************/
+bool evel_throttle_suppress_field(EVEL_THROTTLE_SPEC * throttle_spec,
+                                  const char * const field_name);
+
+/**************************************************************************//**
+ * Determine whether a name-value pair should be allowed (not suppressed).
+ *
+ * @param throttle_spec Throttle specification for the domain being encoded.
+ * @param field_name    The field name holding the name-value pairs.
+ * @param name          The name of the name-value pair to encoded or suppress.
+ * @return true if the name-value pair should be suppressed, false otherwise.
+ *****************************************************************************/
+bool evel_throttle_suppress_nv_pair(EVEL_THROTTLE_SPEC * throttle_spec,
+                                    const char * const field_name,
+                                    const char * const name);
+
+#endif