https://github.com/simagix/mongo-go-examples

mongo-go-driver examples
https://github.com/simagix/mongo-go-examples

golang mongo-go-driver mongodb

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mongo-go-driver examples

• Host: GitHub
• URL: https://github.com/simagix/mongo-go-examples
• Owner: simagix
• License: mit
• Created: 2018-10-10T06:27:15.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2020-09-23T15:37:04.000Z (over 4 years ago)
• Last Synced: 2024-08-23T01:17:55.779Z (4 months ago)
• Topics: golang, mongo-go-driver, mongodb
• Language: Go
• Homepage:
• Size: 80.1 KB
• Stars: 207
• Watchers: 7
• Forks: 36
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# MongoDB mongo-go-driver and Change Streams Examples

- 01/09/2020: Replaced with go.mongodb.org/mongo-driver (v1.2.0)

- 02/25/2019: Replaced with go.mongodb.org/mongo-driver (v1.0.0-rc1)

A MongoDB Change Streams implementation using [mongodb-go-driver](https://github.com/mongodb/mongo-go-driver).

## mongo-go-driver Examples

Examples can be found at [examples](examples).

- Aggregate

  - $group

  - $redact

  - $filter

  - $lookup

  - $elemMatch

- Change Streams

- CRUD

- RunCommand

- Transactions

## Change Streams Demo

Set up a replica set

```

mkdir -p data/db

rm -rf data/db/*

mongod --port 30097 --dbpath data/db --logpath data/mongod.log --fork --wiredTigerCacheSizeGB .5  --replSet replset

mongo --quiet mongodb://localhost:30097/admin --eval 'rs.initiate()'

mongo --quiet mongodb://localhost:30097/argos?replicaSet=replset --eval 'db.oplogs.insert({"_id": "30097", "scores": [100]})'

```

### Case 1: Watch All Changes

```

argos "mongodb://localhost:30097/?replicaSet=replset"

```

### Case 2: Watch Changes From a Database

```

argos "mongodb://localhost:30097/argos?replicaSet=replset"

```

### Case 3: Watch Changes From a Collection

```

argos --collection oplogs "mongodb://localhost:30097/argos?replicaSet=replset"

```

### Case 4: Watch Changes From a Collection With a Pipeline

```

argos --collection --pipeline '[{"$match": {"operationType": "update"}}]' \

  "mongodb://localhost:30097/argos?replicaSet=replset"

```

### Stream POC

It would be nice mongo-go-drive can do stream.  See [POC](mongox/session_test.go) for an example.

```

client.Database(db).Collection(collection).Find(filter).Project(project).Sort(sort).Decode(&docs)

```