Function: Advanced INSERT operation

    +

    Goal: Perform the Advanced INSERT operation where Eventing interacts with the Data service.

    • This function advancedInsertOp merely demonstrates the Advanced INSERT operation.

    • Requires a metadata bucket, a source bucket.

    • Needs a Binding of type Bucket Alias (as documented in the Scriptlet).

    • Will operate on any mutation where doc.type === "control_adv_insert".

    • For more information refer to Advanced INSERT operation in the detailed documentation.

    • advancedInsertOp

    • Input Data/Mutation

    • Output Data

    • Output Log

    // To run need a Binding in this Function's Settings as follows:
    // 1. Bucket Alias
    // 2. src_bkt
    // 3. source
    // 4. read+write
    function OnUpdate(doc, meta) {
        if (!meta.id.startsWith("control_adv_insert")) return;
        log('input meta', meta);
        log('input doc ', doc);
        // two modes typical insert or setting a expiration/TTL
        var new_meta = {"id":"test_adv_insert:"+doc.ins_id};
        if (doc.set_expiry && doc.set_expiry === true) {
            new_meta = {"id":"test_adv_insert:"+doc.ins_id, expiry_date: new Date(Date.now() + 60 * 1000)};
        }
        var new_doc = { type: "test_adv_insert", id:+doc.ins_id, random: Math.random()}
        var result = couchbase.insert(src_bkt,new_meta,new_doc);
        if (result.success) {
            log('success adv. insert: result',result);
        } else {
            log('failure adv. insert: id',new_meta.id,'result',result);
        }
    }
    Mutation #1
    
    INPUT: KEY control_adv_insert::1
    
    {
        "id": 1,
        "type": "control_adv_insert",
        "ins_id": 1,
        "set_expiry": false
    }
    
    Mutation #2
    
    INPUT: KEY control_adv_insert::2
    
    {
        "id": 2,
        "type": "control_adv_insert",
        "ins_id": 2,
        "set_expiry": true
    }
    
    Mutation #3
    
    INPUT: KEY control_adv_insert::3
    
    {
        "id": 3,
        "type": "control_adv_insert",
        "ins_id": 1,
        "set_expiry": false
    }

    We try to insert three (3) documents the first two (2) inserts succeed but the second, test_adv_insert:2, will expire in 60 seconds because we set an expiration. The third insert attempt will fail since test_adv_insert:1 already exists.

    KEY: test_adv_insert:1
    
    {
      "type": "test_adv_insert",
      "id": 1,
      "random": 0.6213609884848352
    }
    
    KEY: test_adv_insert:2
    
    {
      "type": "test_adv_insert",
      "id": 2,
      "random": 0.005665509244788591
    }
    Logs from Mutation #1
    
    2021-01-07T16:52:24.525-08:00 [INFO] "input meta"
    {
        "cas": "1610067144497299456",
        "id": "control_adv_insert::1",
        "expiration": 0,
        "flags": 33554438,
        "vb": 651,
        "seq": 6
    }
    2021-01-07T16:52:24.525-08:00 [INFO] "input doc "
    {
        "id": 1,
        "type": "control_adv_insert",
        "ins_id": 1,
        "set_expiry": false
    }
    2021-01-07T16:52:24.527-08:00 [INFO] "success adv. insert: result"
    {
        "meta": {
            "id": "test_adv_insert:1",
            "cas": "1610067144526397440"
        },
        "success": true
    }
    
    Logs from Mutation #2
    
    2021-01-07T16:52:48.243-08:00 [INFO] "input meta"
    {
        "cas": "1610067168218185728",
        "id": "control_adv_insert::2",
        "expiration": 0,
        "flags": 33554438,
        "vb": 898,
        "seq": 3
    }
    2021-01-07T16:52:48.243-08:00 [INFO] "input doc "
    {
        "id": 2,
        "type": "control_adv_insert",
        "ins_id": 2,
        "set_expiry": true
    }
    2021-01-07T16:52:48.245-08:00 [INFO] "success adv. insert: result"
    {
        "meta": {
            "id": "test_adv_insert:2",
            "cas": "1610067168243810304",
            "expiry_date": "2021-01-08T00:53:48.000Z"
        },
        "success": true
    }
    
    Logs from Mutation #3
    
    2021-01-07T16:53:20.498-08:00 [INFO] "input meta"
    {
        "cas": "1610067200451018752",
        "id": "control_adv_insert::3",
        "expiration": 0,
        "flags": 33554438,
        "vb": 133,
        "seq": 1
    }
    2021-01-07T16:53:20.498-08:00 [INFO] "input doc "
    {
        "id": 3,
        "type": "control_adv_insert",
        "ins_id": 1,
        "set_expiry": false
    }
    2021-01-07T16:53:20.500-08:00 [INFO] "failure adv. insert: id" "test_adv_insert:1" "result"
    {
        "error": {
            "code": 272,
            "name": "LCB_KEY_EEXISTS",
            "desc": "The document key already exists in the server.",
            "key_already_exists": true
        },
        "success": false
    }