Mercurial > gemma
view pkg/imports/fd.go @ 1995:59055c8301df
Move import queue to its own database namespace
Authorisation of the import queue has to be handled differently
from the waterway-related data in the waterway schema. This is
easier to handle, if both are in their own schema/namespace.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Thu, 24 Jan 2019 12:56:31 +0100 |
parents | a7c4005b723f |
children | 2b72f5e005aa |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Raimund Renkert <raimund.renkert@intevation.de> package imports import ( "context" "database/sql" "encoding/json" "errors" "fmt" "io" "time" "gemma.intevation.de/gemma/pkg/common" "gemma.intevation.de/gemma/pkg/misc" "gemma.intevation.de/gemma/pkg/wfs" ) // FairwayDimension is an import job to import // the fairway dimensions in form of polygon geometries // and attribute data from a WFS service. type FairwayDimension struct { // URL the GetCapabilities URL of the WFS service. URL string `json:"url"` // FeatureType selects the feature type of the WFS service. FeatureType string `json:"feature-type"` SortBy string `json:"sort-by"` LOS int `json:"los"` MinWidth int `json:"min-width"` MaxWidth int `json:"max-width"` Depth int `json:"depth"` SourceOrganization string `json:"source-organization"` } type fdTime struct{ time.Time } var guessFDTime = misc.TimeGuesser([]string{ "20060102", "2006", "", }).Guess func (fdt *fdTime) UnmarshalJSON(data []byte) error { var s string if err := json.Unmarshal(data, &s); err != nil { return err } t, err := guessFDTime(s) if err == nil { *fdt = fdTime{t} } return err } // FDJobKind is the import queue type identifier. const FDJobKind JobKind = "fd" type fdJobCreator struct{} func init() { RegisterJobCreator(FDJobKind, fdJobCreator{}) } func (fdJobCreator) Description() string { return "fairway dimension" } func (fdJobCreator) AutoAccept() bool { return false } func (fdJobCreator) Create(_ JobKind, data string) (Job, error) { fd := new(FairwayDimension) if err := common.FromJSONString(data, fd); err != nil { return nil, err } return fd, nil } func (fdJobCreator) Depends() []string { return []string{ "fairway_dimensions", } } func (fdJobCreator) StageDone( ctx context.Context, tx *sql.Tx, id int64, ) error { // Delete the old features. if _, err := tx.ExecContext(ctx, deleteFairwayDimensionSQL); err != nil { return err } _, err := tx.ExecContext(ctx, fdStageDoneSQL, id) return err } // CleanUp for fairway dimension imports is a NOP. func (*FairwayDimension) CleanUp() error { return nil } type fairwayDimensionProperties struct { HydroSorDat *fdTime `json:"hydro_sordat"` } type fdSummary struct { Lat float64 `json:"lat"` Lon float64 `json:"lon"` ID int64 `json:"id"` } const ( fdStageDoneSQL = ` UPDATE waterway.fairway_dimensions SET staging_done = true WHERE id IN ( SELECT key from import.track_imports WHERE import_id = $1 AND relation = 'waterway.fairway_dimensions'::regclass)` deleteFairwayDimensionSQL = ` WITH resp AS ( SELECT best_utm(area::geometry) AS t, ST_Transform(area::geometry, best_utm(area::geometry)) AS a FROM users.responsibility_areas WHERE country = users.current_user_country() ) DELETE FROM waterway.fairway_dimensions WHERE ST_Covers( (SELECT a FROM resp), ST_Transform(area::geometry, (SELECT t FROM resp))) AND staging_done = true ` // The ST_MakeValid (line125) and ST_Buffer (line124) are a workarround to // avoid errors due to reprojection. insertFairwayDimensionSQL = ` WITH resp AS ( SELECT best_utm(area::geometry) AS t, ST_Transform(area::geometry, best_utm(area::geometry)) AS a FROM users.responsibility_areas WHERE country = users.current_user_country() ) INSERT INTO waterway.fairway_dimensions (area, level_of_service, min_width, max_width, min_depth, date_info, source_organization) SELECT ST_Transform(clipped.geom, 4326)::geography, $3, $4, $5, $6, $7, $8 FROM ( SELECT (ST_Dump( ST_Intersection( (SELECT ST_Buffer(a, -0.0001) FROM resp), ST_MakeValid(ST_Transform( ST_GeomFromWKB($1, $2::integer), (SELECT t FROM resp) )) ) )).geom AS geom ) AS clipped WHERE clipped.geom IS NOT NULL RETURNING id, ST_X(ST_Centroid(area::geometry)), ST_Y(ST_Centroid(area::geometry)) ` ) // Do executes the actual fairway dimension import. func (fd *FairwayDimension) Do( ctx context.Context, importID int64, conn *sql.Conn, feedback Feedback, ) (interface{}, error) { start := time.Now() feedback.Info("Import fairway dimensions") feedback.Info("Loading capabilities from %s", fd.URL) caps, err := wfs.GetCapabilities(fd.URL) if err != nil { feedback.Error("Loading capabilities failed: %v", err) return nil, err } ft := caps.FindFeatureType(fd.FeatureType) if ft == nil { return nil, fmt.Errorf("Unknown feature type '%s'", fd.FeatureType) } feedback.Info("Found feature type '%s'", fd.FeatureType) epsg, err := wfs.CRSToEPSG(ft.DefaultCRS) if err != nil { feedback.Error("Unsupported CRS name '%s'", ft.DefaultCRS) return nil, err } urls, err := wfs.GetFeaturesGET( caps, fd.FeatureType, "application/json", fd.SortBy) if err != nil { feedback.Error("Cannot create GetFeature URLs. %v", err) return nil, err } tx, err := conn.BeginTx(ctx, nil) if err != nil { return nil, err } defer tx.Rollback() insertStmt, err := tx.PrepareContext(ctx, insertFairwayDimensionSQL) if err != nil { return nil, err } defer insertStmt.Close() var ( unsupported = stringCounter{} missingProperties int badProperties int features int outside int fds []fdSummary ) if err := wfs.DownloadURLs(urls, func(r io.Reader) error { rfc, err := wfs.ParseRawFeatureCollection(r) if err != nil { return fmt.Errorf("parsing GetFeature document failed: %v", err) } if rfc.CRS != nil { crsName := rfc.CRS.Properties.Name if epsg, err = wfs.CRSToEPSG(crsName); err != nil { feedback.Error("Unsupported CRS: %d", crsName) return err } } // No features -> ignore. if rfc.Features == nil { return nil } feedback.Info("Using EPSG: %d", epsg) features: for _, feature := range rfc.Features { if feature.Geometry.Coordinates == nil { missingProperties++ continue } var props fairwayDimensionProperties if err := json.Unmarshal(*feature.Properties, &props); err != nil { feedback.Warn("bad property: %v", err) badProperties++ continue } var dateInfo time.Time if props.HydroSorDat == nil || props.HydroSorDat.IsZero() { dateInfo = start } else { dateInfo = (*props.HydroSorDat).Time } switch feature.Geometry.Type { case "Polygon": var p polygonSlice if err := json.Unmarshal(*feature.Geometry.Coordinates, &p); err != nil { return err } var fdid int64 var lat, lon float64 err = insertStmt.QueryRowContext( ctx, p.asWKB(), epsg, fd.LOS, fd.MinWidth, fd.MaxWidth, fd.Depth, dateInfo, fd.SourceOrganization, ).Scan(&fdid, &lat, &lon) switch { case err == sql.ErrNoRows: outside++ // ignore -> filtered by responsibility_areas continue features case err != nil: return err } // Store for potential later removal. if err = track(ctx, tx, importID, "waterway.fairway_dimensions", fdid); err != nil { return err } fds = append(fds, fdSummary{ID: fdid, Lat: lat, Lon: lon}) features++ default: unsupported[feature.Geometry.Type]++ } } return nil }); err != nil { feedback.Error("Downloading features failed: %v", err) return nil, err } if badProperties > 0 { feedback.Warn("Bad properties: %d", badProperties) } if missingProperties > 0 { feedback.Warn("Missing properties: %d", missingProperties) } if len(unsupported) != 0 { feedback.Warn("Unsupported types found: %s", unsupported) } if outside > 0 { feedback.Info("Features outside responsibility area: %d", outside) } if features == 0 { err := errors.New("No features found") feedback.Error("%v", err) return nil, err } if err = tx.Commit(); err == nil { feedback.Info("Storing %d features took %s", features, time.Since(start)) } summary := struct { Date time.Time `json:"date"` LOS int `json:"los"` SourceOrganization string `json:"source-organization"` FdArea []fdSummary `json:"fd-area"` }{ Date: time.Now(), LOS: fd.LOS, SourceOrganization: fd.SourceOrganization, FdArea: fds, } return &summary, err }