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Yamcs Release Notes
Yamcs Server Manual
Source Code Documentation
List Parameter HistoryΒΆ
List parameter history
URI Template
GET /api/archive/{instance}/parameters/{name*}
{instance}
Yamcs instance name
{name*}
Parameter name
Query Parameters
pos
The zero-based row number at which to start outputting results. Default:
0
.limit
The maximum number of returned records per page. Choose this value too high and you risk hitting the maximum response size limit enforced by the server. Default:
100
.norepeat
Whether to filter out consecutive identical values. Default
no
.start
Filter the lower bound of the parameter's generation time. Specify a date string in ISO 8601 format.
stop
Filter the upper bound of the parameter's generation time. Specify a date string in ISO 8601 format.
order
The order of the returned results. Can be either
asc
ordesc
. Default:desc
.norealtime
Disable loading of parameters from the parameter cache. Default:
false
.processor
The name of the processor from which to use the parameter cache. Default:
realtime
.source
Specifies how to retrieve the parameters. Either
ParameterArchive
orreplay
. Ifreplay
is specified, a replay processor will be created and data will be processed with the active Mission Database. Note that this is much slower than receiving data from the ParameterArchive.Default:
ParameterArchive
.maxBytes
If set, truncate binary values to the specified byte length. This may be necessary when Yamcs contains large binary values.
next
Continuation token returned by a previous page response.
Response Type
interface ListParameterHistoryResponse {
parameter: ParameterValue[];
// Token indicating the response is only partial. More results can then
// be obtained by performing the same request (including all original
// query parameters) and setting the ``next`` parameter to this token.
continuationToken: string;
}
Related Types
interface ParameterValue {
// Parameter identifier
id: NamedObjectId;
// Raw value (uncalibrated)
rawValue: Value;
// Engineering value (calibrated)
engValue: Value;
// Time of Yamcs reception
acquisitionTime: string; // RFC 3339 timestamp
// Time of generation (~ packet time)
generationTime: string; // RFC 3339 timestamp
acquisitionStatus: AcquisitionStatus;
// Deprecated: this field was originally introduced for compatibility
// with Airbus CGS/CD-MCS system. It was redundant, because when false,
// the acquisitionStatus is also set to INVALID.
processingStatus: boolean;
monitoringResult: MonitoringResult;
rangeCondition: RangeCondition;
// Context-dependent ranges
alarmRange: AlarmRange[];
// How long (in milliseconds) this parameter value is valid
// Note that there is an option when subscribing to parameters to get
// updated when the parameter values expire.
expireMillis: string; // String decimal
// When transferring parameters over WebSocket, this value might be used
// instead of the id above in order to reduce the bandwidth.
// Note that the id <-> numericId assignment is only valid in the context
// of a single WebSocket call.
numericId: number;
}
// Used by external clients to identify an item in the Mission Database
// If namespace is set, then the name is that of an alias, rather than
// the qualified name.
interface NamedObjectId {
name: string;
namespace: string;
}
// Union type for storing a value
interface Value {
type: Type;
floatValue: number;
doubleValue: number;
sint32Value: number;
uint32Value: number;
binaryValue: string; // Base64
stringValue: string;
timestampValue: string; // String decimal
uint64Value: string; // String decimal
sint64Value: string; // String decimal
booleanValue: boolean;
aggregateValue: AggregateValue;
arrayValue: Value[];
}
// An aggregate value is an ordered list of (member name, member value).
// Two arrays are used in order to be able to send just the values (since
// the names will not change)
interface AggregateValue {
name: string[];
value: Value[];
}
interface AlarmRange {
level: AlarmLevelType;
minInclusive: number;
maxInclusive: number;
minExclusive: number;
maxExclusive: number;
}
enum Type {
FLOAT = "FLOAT",
DOUBLE = "DOUBLE",
UINT32 = "UINT32",
SINT32 = "SINT32",
BINARY = "BINARY",
STRING = "STRING",
TIMESTAMP = "TIMESTAMP",
UINT64 = "UINT64",
SINT64 = "SINT64",
BOOLEAN = "BOOLEAN",
AGGREGATE = "AGGREGATE",
ARRAY = "ARRAY",
// Enumerated values have both an integer (sint64Value) and a string representation
ENUMERATED = "ENUMERATED",
NONE = "NONE",
}
enum AcquisitionStatus {
// OK!
ACQUIRED = "ACQUIRED",
// No value received so far
NOT_RECEIVED = "NOT_RECEIVED",
// Some value has been received but is invalid
INVALID = "INVALID",
// The parameter is coming from a packet which has not since updated although it should have been
EXPIRED = "EXPIRED",
}
enum MonitoringResult {
DISABLED = "DISABLED",
IN_LIMITS = "IN_LIMITS",
WATCH = "WATCH",
WARNING = "WARNING",
DISTRESS = "DISTRESS",
CRITICAL = "CRITICAL",
SEVERE = "SEVERE",
}
enum RangeCondition {
LOW = "LOW",
HIGH = "HIGH",
}
enum AlarmLevelType {
NORMAL = "NORMAL",
WATCH = "WATCH",
WARNING = "WARNING",
DISTRESS = "DISTRESS",
CRITICAL = "CRITICAL",
SEVERE = "SEVERE",
}