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13.7. Hot Rod Operation Values
The following is a list of valid
opcode values for a request header and their corresponding response header values:
| Operation | Request Operation Code | Response Operation Code |
|---|---|---|
| put | 0x01 | 0x02 |
| get | 0x03 | 0x04 |
| putIfAbsent | 0x05 | 0x06 |
| replace | 0x07 | 0x08 |
| replaceIfUnmodified | 0x09 | 0x0A |
| remove | 0x0B | 0x0C |
| removeIfUnmodified | 0x0D | 0x0E |
| containsKey | 0x0F | 0x10 |
| clear | 0x13 | 0x14 |
| stats | 0x15 | 0x16 |
| ping | 0x17 | 0x18 |
| bulkGet | 0x19 | 0x1A |
| getWithMetadata | 0x1B | 0x1C |
| bulkKeysGet | 0x1D | 0x1E |
| query | 0x1F | 0x20 |
Additionally, if the response header
opcode value is 0x50, it indicates an error response.
13.7.1. Magic Values
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The following is a list of valid values for the
Magic field in request and response headers:
| Value | Details |
|---|---|
| 0xA0 | Cache request marker. |
| 0xA1 | Cache response marker. |
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13.7.2. Status Values
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The following is a table that contains all valid values for the
Status field in a response header:
| Value | Details |
|---|---|
| 0x00 | No error. |
| 0x01 | Not put/removed/replaced. |
| 0x02 | Key does not exist. |
| 0x81 | Invalid Magic value or Message ID. |
| 0x82 | Unknown command. |
| 0x83 | Unknown version. |
| 0x84 | Request parsing error. |
| 0x85 | Server error. |
| 0x86 | Command timed out. |
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13.7.3. Transaction Type Values
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The following is a list of valid values for
Transaction Type in a request header:
| Value | Details |
|---|---|
| 0 | Indicates a non-transactional call or that the client does not support transactions. If used, the TX_ID field is omitted. |
| 1 | Indicates X/Open XA transaction ID (XID). This value is currently not supported. |
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13.7.4. Client Intelligence Values
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The following is a list of valid values for
Client Intelligence in a request header:
| Value | Details |
|---|---|
| 0x01 | Indicates a basic client that does not require any cluster or hash information. |
| 0x02 | Indicates a client that is aware of topology and requires cluster information. |
| 0x03 | Indicates a client that is aware of hash and distribution and requires both the cluster and hash information. |
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13.7.5. Flag Values
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The following is a list of valid
flag values in the request header:
| Value | Details |
|---|---|
| 0x0001 | ForceReturnPreviousValue |
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13.7.6. Hot Rod Error Handling
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| Field | Data Type | Details |
|---|---|---|
| Error Opcode | - | Contains the error operation code. |
| Error Status Number | - | Contains a status number that corresponds to the error opcode. |
| Error Message Length | vInt | Contains the length of the error message. |
| Error Message | string | Contains the actual error message. If an 0x84 error code returns, which indicates that there was an error in parsing the request, this field contains the latest version supported by the Hot Rod server. |
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