mongo driver migration to an officially supported one + moving Orion to CentOS 8 #3622

fgalan · 2020-02-07T12:44:57Z

This PR is related with #3132 and provides the "wrapping modules" described in that issue.

At the present point, apart from a first version of the modules themselves (in the mongoDriver/ library) only a small part of the CB logic (in particular, the one related with subscription creation, update and retreival) has been migrated to use the new library.

The idea is to continue migrating more CB logic, enhancing mongoDriver/ in the process, if needed. This could be done either ini feature/3132_poc_isolating_driver_usage directly or as PR on that branch (contributions welcome! :)

Pay attention to the "FIXME OLD-DR" marks. They should be solved and removed before merging this PR into master.

Pending references to old driver outside mongoDriver (grep '#include "mongo/' -R src/* | grep -v mongoDriver | wc -l)

35

fgalan · 2020-02-07T12:48:25Z

Note that we have some part of CB using old mongo::BSON* classes and the other using orion::BSON* classes, we keep to separate connection pools:

$ contextBroker -fg -logLevel DEBUG -t 100 -logForHumans | grep "Connection info"
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[129]: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@12:46:59  mongoConnectionPool.cpp[116]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000

Eventually, the old one will be removed and only the one with orion:: will remain.

… new driver

fgalan · 2020-07-21T11:31:59Z

At commit 287144b initial implementation of mongoDriver and following files migrated:

src/lib/apiTypesV2/HttpInfo.cpp
src/lib/apiTypesV2/HttpInfo.h
src/lib/mongoBackend/MongoCommonSubscription.cpp
src/lib/mongoBackend/MongoCommonSubscription.h
src/lib/mongoBackend/MongoCommonUpdate.cpp
src/lib/mongoBackend/MongoGlobal.cpp (not fully)
src/lib/mongoBackend/MongoGlobal.h (not fully)
src/lib/mongoBackend/mongoCreateSubscription.cpp
src/lib/mongoBackend/mongoGetSubscriptions.cpp
src/lib/mongoBackend/mongoSubCache.cpp (probably not fully)
src/lib/mongoBackend/mongoSubCache.h (probably not fully)
src/lib/mongoBackend/mongoUpdateSubscription.cpp

Pending references to old driver outside mongoDriver (grep '#include "mongo/' -R src/* | grep -v mongoDriver | wc -l)

27

Functional tests log (from my local)

Total test time: 3321.71 seconds

WARNING: 5 test cases disabled:
  o  2: 0000_bad_requests/exit.test
  o  30: 0000_ipv6_support/ipv4_only.test
  o  31: 0000_ipv6_support/ipv6_only.test
  o  390: 0917_queryContext_behaves_differently/query_with_and_without_forwarding.test
  o  625: 1310_suspect_200OK/suspect_200OK.test

fgalan · 2020-07-28T18:12:13Z

At commit c389579, almost old the code migrated (only some parts in MongoGlobal remain):

src/lib/apiTypesV2/HttpInfo.cpp
src/lib/cache/subCache.h
src/lib/mongoBackend/MongoCommonRegister.cpp
src/lib/mongoBackend/MongoCommonRegister.h
src/lib/mongoBackend/MongoCommonUpdate.cpp
src/lib/mongoBackend/MongoCommonUpdate.h
src/lib/mongoBackend/MongoGlobal.cpp (not fully)
src/lib/mongoBackend/MongoGlobal.h (not fully)
src/lib/mongoBackend/compoundResponses.cpp
src/lib/mongoBackend/compoundResponses.h
src/lib/mongoBackend/compoundValueBson.cpp
src/lib/mongoBackend/compoundValueBson.h
src/lib/mongoBackend/dateExpiration.cpp
src/lib/mongoBackend/dateExpiration.h
src/lib/mongoBackend/location.cpp
src/lib/mongoBackend/location.h
src/lib/mongoBackend/mongoDiscoverContextAvailability.cpp
src/lib/mongoBackend/mongoGetSubscriptions.cpp
src/lib/mongoBackend/mongoQueryTypes.cpp
src/lib/mongoBackend/mongoRegisterContext.cpp
src/lib/mongoBackend/mongoRegistrationCreate.cpp
src/lib/mongoBackend/mongoRegistrationDelete.cpp
src/lib/mongoBackend/mongoRegistrationGet.cpp
src/lib/mongoBackend/mongoSubCache.cpp
src/lib/mongoBackend/mongoUpdateSubscription.cpp
src/lib/ngsi/ContextAttribute.cpp
src/lib/ngsi/ContextAttribute.h
src/lib/ngsi/ContextElementResponse.cpp
src/lib/ngsi/ContextElementResponse.h
src/lib/ngsi/Metadata.cpp
src/lib/ngsi/Metadata.h
src/lib/rest/StringFilter.cpp
src/lib/rest/StringFilter.h

Pending references to old driver outside mongoDriver (grep '#include "mongo/' -R src/* | grep -v mongoDriver | wc -l)

8

Functional tests log (from travis):

Total test time: 2548.58 seconds

WARNING: 5 test cases disabled:
  o  2: 0000_bad_requests/exit.test
  o  30: 0000_ipv6_support/ipv4_only.test
  o  31: 0000_ipv6_support/ipv6_only.test
  o  390: 0917_queryContext_behaves_differently/query_with_and_without_forwarding.test
  o  625: 1310_suspect_200OK/suspect_200OK.test

Unit test are expected to fail. Probably it is the same problem at commit 287144b, solved using DISABLED.
However, we are not paying too much attention to this by the moment, we'll fix one the new driver
gets in place.

fgalan · 2020-07-30T14:08:20Z

At commit 7df0fb4, old code migrated.

Pending references to old driver outside mongoDriver (grep '#include "mongo/' -R src/* | grep -v mongoDriver | wc -l)

0

In addition, the following files has been removed from mongoBackend (no longer used):

mongoConnectionPool.cpp|h
connectionOperations.cpp|h
safeMongo.cpp|h

With regards to this previous comment now the situation is:

$ contextBroker -fg -logLevel DEBUG -t 100 -logForHumans | grep "Connection info"
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000
DEBUG@13:50:23  mongoConnectionPool.cpp[117]: orion:: Connection info: dbName='orion', rplSet='', timeout=4666723172467343.000000

Functional tests log (https://travis-ci.org/github/telefonicaid/fiware-orion/jobs/713271841)):

Total test time: 2510.69 seconds

WARNING: 5 test cases disabled:
  o  2: 0000_bad_requests/exit.test
  o  30: 0000_ipv6_support/ipv4_only.test
  o  31: 0000_ipv6_support/ipv6_only.test
  o  390: 0917_queryContext_behaves_differently/query_with_and_without_forwarding.test
  o  625: 1310_suspect_200OK/suspect_200OK.test

So the codebase is now ready to start with the driver migration work :) That will be done in a branch of feature/3132_poc_isolating_driver_usage

The following tasks are deferred after driver migration:

Enable some functions in connectionOperations.cpp, related with write concern (setWriteConcern, getWriteConern) and auth (connectionAuth). By the moment, Orion cannot authenticat on MongoDB nor change de write cocern.
Re-enable de unit tests
Review all remaining FIXME OLD-DR comments. Many of them are related with usage of the streaming API

fgalan · 2021-02-12T14:59:03Z

Stage one done in Stage 1 done in PR #3772

Note that in that PR we are the C official driver instead of the C++ official driver. Originally the plan was to use the C++ driver. However, at the end we have used the C driver given the following reasons:

We didn't manage to compile the new C++ driver in CentOS 7 (probably due to the driver is using "modern C++" and the gcc compiler in CentOS 7 is too old)
The C++ driver is in fact based in mongo C driver (which is installed as a prerequeriment of it). Thus, using mongo C driver directly removes a layer of software.
The high-level abstractions that C++ driver could be providing are in fact provided by our own mongoDriver/ module. We don't need the C++ driver to provide such abstractions. In other words, we are not losing the high-level abstractions that a C++ driver would provide as we are ourselves providing these abstractions to client code in mongoDriver/ API

fgalan · 2021-02-12T15:08:53Z

Having completed stage 1 (the most difficult one :), the plan from now on is as follows. Each stage in the plan will be done in a separate PR (using task/3132_* pull branch as branch of this feature/3132_poc_isolating_driver_usage)

Stage 2 (PR FIX code style and disable mongo unit test based in old driver #3773): disable mongo unit tests (thus removing the old legacy driver from all the code base) and lint fixes to make GitActions happy again (i.e. "all green" in this PR branch).
Stage 3 (PRs FIX many OLD-DR issues #3779, FIX many OLD-DR issues (bis) #3790, FIX all pending OLD-DR issues #3796): work on the pending FIXME OLD-DR marks. Those not addressable at this moment will be moved to issues. Just to remember some of them:
- setWriteConcern
- getWriteConern
- connectionAuth
- all FF macros to F (eg. getObjectFieldFF -> getObjectFieldF)
Stage 4 (PR Dockerfile modified supporting Centos8 #3793): docker/Dockerfile to replace driver (in addition, maybe we can move to CentOS 8, taking into account the feedback in May Orion build on CentOS 8? #3764)
Stage 5 (PR Documentation fixes related with CentOS 8 and the new MongoDB driver #3803): modify documentation, specially (non exahustive list):
- development manual: to include the new mongoDriver description
- performance tunning document: to explain the mongoc-stat command
- build from sources document
- move from CentOS 7 to CentOS 8
Stage 6 (PR UPGRADE MongoDB recomendation from 3.6 to 4.4 #3798): modify MongoDB version recomendatio to 4.4
Stage 7 (PR FIX CNR and final fixes #3810): CHANGES_NEXT_RELEASE adjustments (issues to take into account: Why using older version of mongodb driver. #3132, BUG Sometimes using MongoDB as ReplicaSet and change the primary node when exist on-air operations fail #3717, Is Orion compatible with AWS DocumentDB #3778, Authentication issue on MongoDB 4.2 replicaset #3782 and not able to connect to azure cosmos db #3797) & final minor cleanup

After merging this PR #3622, some additional tasks have to be done:

Remove old driver from Dockerfile for CI Remove regression stuff related with :rpm7 (.github/workflows and ci/rpm7/ if I remember correctly... do a grep -R rpm7 to find possible leftovers after that) -> after merging the PR, no rpm7 leftover remains (grep rpm7 * -R | wc -l results 0). Nothing to do
Re-enable disabled unit tests, using the new driver (this seems to be a heavy work task, it will be probably moved to an issue -> deferred at the end to issue mongodriver follow up: re-enable disabled unit tests #3775)

…_first_stage FIX upgrade mongo legacy driver to a new one written in C

…_second_stage FIX code style and disable mongo unit test based in old driver

Update procedure for Ubuntu 20.04 LTS (amd64 and aarch64)

fgalan · 2021-03-22T14:42:12Z

In Ubuntu (doc/manuals/admin/build_source.md#ubuntu-1804-lts), taking into account the new driver and the move to MongoDB 4.4. I did some early modifications on the documentation, but not sure if they are complete and a review from your side would be great.

I sent a PR #3819. It updataes the procedure to directly run Orion on Ubuntu (amd64 and aarch64). It would be great if you could review this PR.

Merged. Thanks!

That covers the first item. Regarding the second item:

In Raspberry Pi (docker/raspberry_pi.md and docker/raspberry_pi.jp.md). Probably this ones don't need too much adaptation, as they are based in Orion running in docker (and Dockefile has been already adapted by me in feature/3132_poc_isolating_driver_usage branch). Maybe just change docker build --build-arg=centos7 -t orion . to docker build --build-arg=centos8 -t orion . ?

It is not needed any adaptation in documents at the end?

fisuda · 2021-03-22T21:28:25Z

I'm working on the second item. I will send a PR for updating the documentation.

Update function test procedure for Ubuntu

fisuda · 2021-03-26T08:30:32Z

In Raspberry Pi (docker/raspberry_pi.md and docker/raspberry_pi.jp.md). Probably this ones don't need too much adaptation, as they are based in Orion running in docker (and Dockefile has been already adapted by me in feature/3132_poc_isolating_driver_usage branch). Maybe just change docker build --build-arg=centos7 -t orion . to docker build --build-arg=centos8 -t orion . ?

I sent a PR #3825. It updates documentation to support CentOS 8 aarch64 for Raspberry Pi. It would be great if you could review this PR.

Add machine information in GET /version

…telefonicaid/fiware-orion into feature/3132_poc_isolating_driver_usage

Support CentOS 8 aarch64 for Raspberry Pi

fgalan · 2021-04-09T07:14:39Z

06d93e5 is a "candidate commit" to merge this PR.

Valgrind test pass:

$ ./valgrindTestSuite.sh
...
10 functional tests failed (not a leak, just a func-test failure):
   015: get_entity_dates_with_options.test (exit code 1)
   028: https.test (exit code 1)
   352: attribute_dates.test (exit code 1)
   356: filter_attr_datemodified_sub.test (exit code 1)
   362: filter_datecreated_sub.test (exit code 1)
   365: get_entity_dates.test (exit code 1)
   516: sub_from_active_to_fail.test (exit code 1)
   800: 2064_attrs_blacklist_complex.test (exit code 1)
   923: 2750_reset_metrics.test (exit code 1)
   1156: log_notifications.test (exit code 1)
---------------------------------------

Total test time: 21448.25 seconds (357 minutes)
Great, all valgrind tests ran without any memory leakage

Functional tests with cache:

$ ./testHarness.sh --cache
...
Total test time: 3259.53 seconds

WARNING: 5 test cases disabled:
  o  2: 0000_bad_requests/exit.test
  o  30: 0000_ipv6_support/ipv4_only.test
  o  31: 0000_ipv6_support/ipv6_only.test
  o  374: 0917_queryContext_behaves_differently/query_with_and_without_forwarding.test
  o  610: 1310_suspect_200OK/suspect_200OK.test

Functional test without cache:

$ ./testHarness.sh --noCache
...
Total test time: 3274.52 seconds

2 test cases OK in the second attempt:
  o  0876_entity_dates/get_entity_dates.test
  o  3068_cprs_full_functional_v2/fwd_v2_ngsiv2_query_one_forward_query.test

WARNING: 5 test cases disabled:
  o  2: 0000_bad_requests/exit.test
  o  30: 0000_ipv6_support/ipv4_only.test
  o  31: 0000_ipv6_support/ipv6_only.test
  o  374: 0917_queryContext_behaves_differently/query_with_and_without_forwarding.test
  o  610: 1310_suspect_200OK/suspect_200OK.test

mapedraza

LGTM

fgalan · 2021-04-09T16:24:16Z

Several issues as been created as a consequence of the work on this PR, in some way or another (some of them are technical debt, some others are ideas for improvements). In particular these ones:

fgalan · 2021-04-09T16:31:25Z

The merging of this PR is an important milestone in the Orion Context Broker development. We are getting rid of the old legacy driver (a very toxic and dangerous dependency that has been around for too many years) and start using an officially supported one (the Mongo C driver).

Special thanks to @mapedraza and @fisuda for their contributions to this PR's branch. Also, special thanks to @bazile-clyde @kevinAlbs, from the MongoDB team, to help me to understand how the Mongo C driver works :)

fgalan added the help wanted label Feb 7, 2020

ADD mongoDriver library as first step to move the code to new MongoDB…

287144b

… new driver

fgalan force-pushed the feature/3132_poc_isolating_driver_usage branch from 4335e0e to 287144b Compare July 21, 2020 11:27

ADD mongoDriver library generaly used in mongoBackend code

c389579

fgalan force-pushed the feature/3132_poc_isolating_driver_usage branch from a190514 to c389579 Compare July 28, 2020 16:29

ADD mongoDriver library used in all mongoBackend code

7df0fb4

fgalan force-pushed the feature/3132_poc_isolating_driver_usage branch from d377716 to 7df0fb4 Compare July 30, 2020 12:00

Merge branch 'master' into feature/3132_poc_isolating_driver_usage

f6d033f

fgalan mentioned this pull request Nov 4, 2020

BUG Sometimes using MongoDB as ReplicaSet and change the primary node when exist on-air operations fail #3717

Closed

Merge branch 'master' into feature/3132_poc_isolating_driver_usage

f6b5d23

fgalan removed the help wanted label Feb 8, 2021

FIX upgrade mongo legacy driver to a new one written in C

44bb684

fgalan mentioned this pull request Feb 12, 2021

FIX upgrade mongo legacy driver to a new one written in C #3772

Merged

This was referenced Feb 12, 2021

[WIP] New MongoDB driver: PoC with unit tests #3613

Closed

Why using older version of mongodb driver. #3132

Closed

fgalan changed the title ~~[WIP] mongoDriver/ encapsulation library~~ [WIP] mongo driver migration to an officially supported one Feb 12, 2021

mapedraza and others added 2 commits February 15, 2021 16:43

Merge pull request #3772 from telefonicaid/task/3132_driver_migration…

95a7cfb

…_first_stage FIX upgrade mongo legacy driver to a new one written in C

FIX code style and disable mongo unit test based in old driver

99ed292

fgalan mentioned this pull request Feb 15, 2021

FIX code style and disable mongo unit test based in old driver #3773

Merged

Merge pull request #3773 from telefonicaid/task/3132_driver_migration…

4af8845

…_second_stage FIX code style and disable mongo unit test based in old driver

This was referenced Feb 16, 2021

mongodriver follow up: analyze the need and usage of a BSON streaming API #3774

Open

mongodriver follow up: re-enable disabled unit tests #3775

Open

FIX many OLD-DR issues

3c87f92

fgalan mentioned this pull request Feb 18, 2021

FIX many OLD-DR issues #3779

Merged

fgalan force-pushed the feature/3132_poc_isolating_driver_usage branch from 8f367a3 to 861665d Compare March 22, 2021 13:11

Merge pull request #3819 from fisuda/hardening/ubuntu_20_04

2d6abc3

Update procedure for Ubuntu 20.04 LTS (amd64 and aarch64)

fgalan mentioned this pull request Mar 24, 2021

FIX createEntity logic to take into account duplication and upsert #3822

Merged

fisuda and others added 3 commits March 25, 2021 19:44

Update function test procedure for Ubuntu

ef8e803

Merge pull request #3823 from fisuda/update/documentation

4af8a9d

Update function test procedure for Ubuntu

Support CentOS 8 aarch64 for Raspberry Pi

9020640

fisuda mentioned this pull request Mar 26, 2021

Support CentOS 8 aarch64 for Raspberry Pi #3825

Merged

fgalan and others added 7 commits March 26, 2021 14:26

FIX connectionOperations logic

0f4eeb0

Add machine information in GET /version

a798dbd

Merge pull request #3827 from fisuda/hardening/machine_info

0b59610

Add machine information in GET /version

Merge branch 'master' into feature/3132_poc_isolating_driver_usage

cf68a32

Merge branch 'feature/3132_poc_isolating_driver_usage' of github.com:…

4d05a31

…telefonicaid/fiware-orion into feature/3132_poc_isolating_driver_usage

FIX minDistance: 0 case

e5fa625

FIX some missing test cases in noCache variant

8b39115

fgalan mentioned this pull request Mar 29, 2021

more_than_one_bad_input.test may fail due to timming #3828

Closed

fgalan and others added 4 commits March 29, 2021 17:07

Merge pull request #3825 from fisuda/hardening/raspberry_pi

fedf948

Support CentOS 8 aarch64 for Raspberry Pi

REMOVE fixme comments

2b0c564

Merge branch 'master' into feature/3132_poc_isolating_driver_usage

8057839

Merge branch 'master' into feature/3132_poc_isolating_driver_usage

06d93e5

mapedraza approved these changes Apr 9, 2021

View reviewed changes

mapedraza merged commit 05a0132 into master Apr 9, 2021

fgalan deleted the feature/3132_poc_isolating_driver_usage branch April 9, 2021 16:15

This was referenced Apr 12, 2021

catch on the exception mongo::UserException [it was "container crashes with exit code 139"] #3326

Closed

Obsolete RPM generation for RHEL/CentOS 7 (they should move to 8 or being removed) #3834

Merged

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mongo driver migration to an officially supported one + moving Orion to CentOS 8 #3622

mongo driver migration to an officially supported one + moving Orion to CentOS 8 #3622

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mongo driver migration to an officially supported one + moving Orion to CentOS 8 #3622

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